Orbits. How do they work?

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Re: Orbits. How do they work?
« Reply #390 on: October 22, 2020, 10:54:16 PM »
Markjo - you have proven you are an idiot. Pls stop making a fool of your self.
If you think that understanding physics makes me an idiot, then I suppose I'm an idiot.  But what does that make you?
I am a normal person with a name and address - http://heiwaco.tripod.com/cv.htm - and I want to know how a spacecraft shifts from an orbit around Earth to an orbit around the Moon.
You suggest that the spacecraft should aim for an invisible point L1 in space that orbits at 1011 m/s in space around Earth in a circle. L1 apparently is a location in space where Earth and Moon gravity forces on a spacecraft are equal.
When the spacecraft arrives at point L1 it fires its engine and starts orbiting the Moon.
Let me repeat: How does a spacecraft arrive at point L1 and start orbiting Earth with it at constant speed 1011 m/s? The space craft is already orbiting Earth with variable speed/direction in another plane/orbit.
This statement and your previous statements are an indication that you have no idea how orbital mechanics work,  for one thing you do not come to a stop at the L1 position, you continue to Coast by and tell you reach the moon at which time you fire retrorockets to put yourself in orbit.
P.S. the L1 position is like a mile marker on your trip that is the half way point.
The the universe has no obligation to makes sense to you.
The earth is a globe.

*

Heiwa

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Re: Orbits. How do they work?
« Reply #391 on: October 22, 2020, 11:43:00 PM »
Markjo - you have proven you are an idiot. Pls stop making a fool of your self.
If you think that understanding physics makes me an idiot, then I suppose I'm an idiot.  But what does that make you?
I am a normal person with a name and address - http://heiwaco.tripod.com/cv.htm - and I want to know how a spacecraft shifts from an orbit around Earth to an orbit around the Moon.
You suggest that the spacecraft should aim for an invisible point L1 in space that orbits at 1011 m/s in space around Earth in a circle. L1 apparently is a location in space where Earth and Moon gravity forces on a spacecraft are equal.
When the spacecraft arrives at point L1 it fires its engine and starts orbiting the Moon.
Let me repeat: How does a spacecraft arrive at point L1 and start orbiting Earth with it at constant speed 1011 m/s? The space craft is already orbiting Earth with variable speed/direction in another plane/orbit.
This statement and your previous statements are an indication that you have no idea how orbital mechanics work,  for one thing you do not come to a stop at the L1 position, you continue to Coast by and tell you reach the moon at which time you fire retrorockets to put yourself in orbit.
P.S. the L1 position is like a mile marker on your trip that is the half way point.
But how do I arrive at and to Coast (?) at an invisible point L1 that moves at 1011 m/s in space around Earth? Of course I must arrive there at same speed and direction, but I am already in another orbit around Earth with another, completely different speed/direction! And what do I do then? Fire retrorockets to start obiting the Moon? What drugs are you on?

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Stash

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Re: Orbits. How do they work?
« Reply #392 on: October 23, 2020, 12:09:40 AM »
Markjo - you have proven you are an idiot. Pls stop making a fool of your self.
If you think that understanding physics makes me an idiot, then I suppose I'm an idiot.  But what does that make you?
I am a normal person with a name and address - http://heiwaco.tripod.com/cv.htm - and I want to know how a spacecraft shifts from an orbit around Earth to an orbit around the Moon.
You suggest that the spacecraft should aim for an invisible point L1 in space that orbits at 1011 m/s in space around Earth in a circle. L1 apparently is a location in space where Earth and Moon gravity forces on a spacecraft are equal.
When the spacecraft arrives at point L1 it fires its engine and starts orbiting the Moon.
Let me repeat: How does a spacecraft arrive at point L1 and start orbiting Earth with it at constant speed 1011 m/s? The space craft is already orbiting Earth with variable speed/direction in another plane/orbit.
This statement and your previous statements are an indication that you have no idea how orbital mechanics work,  for one thing you do not come to a stop at the L1 position, you continue to Coast by and tell you reach the moon at which time you fire retrorockets to put yourself in orbit.
P.S. the L1 position is like a mile marker on your trip that is the half way point.
But how do I arrive at and to Coast (?) at an invisible point L1 that moves at 1011 m/s in space around Earth?

Math and physics.

*

Heiwa

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  • I have been around a long time.
Re: Orbits. How do they work?
« Reply #393 on: October 23, 2020, 01:18:20 AM »
Markjo - you have proven you are an idiot. Pls stop making a fool of your self.
If you think that understanding physics makes me an idiot, then I suppose I'm an idiot.  But what does that make you?
I am a normal person with a name and address - http://heiwaco.tripod.com/cv.htm - and I want to know how a spacecraft shifts from an orbit around Earth to an orbit around the Moon.
You suggest that the spacecraft should aim for an invisible point L1 in space that orbits at 1011 m/s in space around Earth in a circle. L1 apparently is a location in space where Earth and Moon gravity forces on a spacecraft are equal.
When the spacecraft arrives at point L1 it fires its engine and starts orbiting the Moon.
Let me repeat: How does a spacecraft arrive at point L1 and start orbiting Earth with it at constant speed 1011 m/s? The space craft is already orbiting Earth with variable speed/direction in another plane/orbit.
This statement and your previous statements are an indication that you have no idea how orbital mechanics work,  for one thing you do not come to a stop at the L1 position, you continue to Coast by and tell you reach the moon at which time you fire retrorockets to put yourself in orbit.
P.S. the L1 position is like a mile marker on your trip that is the half way point.
But how do I arrive at and to Coast (?) at an invisible point L1 that moves at 1011 m/s in space around Earth?

Math and physics.
But Neil and Buzz knew nothing about math and physics. They were pilots of war planes napalm bombing Asians! Regardless, 1969 they flew to point L1 in space, fired rockets, started orbit the Moon, left that orbit and landed on the Moon, pissed, took off again to orbit the Moon, they arrived back at point L1, fired rockets, left Moon orbit and dropped straight back on Earth ... into an Ocean ... where POTUS Nixon was crusing around ... on some summer vaccation.
Only complete nutcases believe this nonsense.  Are you a nutcase?

*

Stash

  • 7455
Re: Orbits. How do they work?
« Reply #394 on: October 23, 2020, 01:47:02 AM »
Markjo - you have proven you are an idiot. Pls stop making a fool of your self.
If you think that understanding physics makes me an idiot, then I suppose I'm an idiot.  But what does that make you?
I am a normal person with a name and address - http://heiwaco.tripod.com/cv.htm - and I want to know how a spacecraft shifts from an orbit around Earth to an orbit around the Moon.
You suggest that the spacecraft should aim for an invisible point L1 in space that orbits at 1011 m/s in space around Earth in a circle. L1 apparently is a location in space where Earth and Moon gravity forces on a spacecraft are equal.
When the spacecraft arrives at point L1 it fires its engine and starts orbiting the Moon.
Let me repeat: How does a spacecraft arrive at point L1 and start orbiting Earth with it at constant speed 1011 m/s? The space craft is already orbiting Earth with variable speed/direction in another plane/orbit.
This statement and your previous statements are an indication that you have no idea how orbital mechanics work,  for one thing you do not come to a stop at the L1 position, you continue to Coast by and tell you reach the moon at which time you fire retrorockets to put yourself in orbit.
P.S. the L1 position is like a mile marker on your trip that is the half way point.
But how do I arrive at and to Coast (?) at an invisible point L1 that moves at 1011 m/s in space around Earth?

Math and physics.
But Neil and Buzz knew nothing about math and physics. They were pilots of war planes napalm bombing Asians! Regardless, 1969 they flew to point L1 in space, fired rockets, started orbit the Moon, left that orbit and landed on the Moon, pissed, took off again to orbit the Moon, they arrived back at point L1, fired rockets, left Moon orbit and dropped straight back on Earth ... into an Ocean ... where POTUS Nixon was crusing around ... on some summer vaccation.
Only complete nutcases believe this nonsense.  Are you a nutcase?

What do Neil and Buzz have to do with math and physics? And what do Neil and Buzz have to do with the topic? We're simply talking about changing orbits and how it's done. It's done by first understanding physics and doing the math. Then engineering an accommodating solution. Like pretty much for anything that needs to move with precision. Like engineering a 240 meter tanker. Lots of math and physics required.

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frenat

  • 3645
Re: Orbits. How do they work?
« Reply #395 on: October 23, 2020, 03:32:58 AM »
Markjo - you have proven you are an idiot. Pls stop making a fool of your self.
If you think that understanding physics makes me an idiot, then I suppose I'm an idiot.  But what does that make you?
I am a normal person with a name and address - http://heiwaco.tripod.com/cv.htm - and I want to know how a spacecraft shifts from an orbit around Earth to an orbit around the Moon.
You suggest that the spacecraft should aim for an invisible point L1 in space that orbits at 1011 m/s in space around Earth in a circle. L1 apparently is a location in space where Earth and Moon gravity forces on a spacecraft are equal.
When the spacecraft arrives at point L1 it fires its engine and starts orbiting the Moon.
Let me repeat: How does a spacecraft arrive at point L1 and start orbiting Earth with it at constant speed 1011 m/s? The space craft is already orbiting Earth with variable speed/direction in another plane/orbit.
This statement and your previous statements are an indication that you have no idea how orbital mechanics work,  for one thing you do not come to a stop at the L1 position, you continue to Coast by and tell you reach the moon at which time you fire retrorockets to put yourself in orbit.
P.S. the L1 position is like a mile marker on your trip that is the half way point.
But how do I arrive at and to Coast (?) at an invisible point L1 that moves at 1011 m/s in space around Earth?

Math and physics.
But Neil and Buzz knew nothing about math and physics. They were pilots of war planes napalm bombing Asians! Regardless, 1969 they flew to point L1 in space, fired rockets, started orbit the Moon, left that orbit and landed on the Moon, pissed, took off again to orbit the Moon, they arrived back at point L1, fired rockets, left Moon orbit and dropped straight back on Earth ... into an Ocean ... where POTUS Nixon was crusing around ... on some summer vaccation.
Only complete nutcases believe this nonsense.  Are you a nutcase?
Yes, only complete nutcases believe they knew nothing about math and physics and the other crap you posted. Thanks for admitting you are a complete nutcase which the rest of us knew all along. All you've done here is prove your complete ignorance on the topic. While amusing, it is also very sad for you.  You clearly don't even try to understand yet you still act as if you are an authority on the subject.

Thanks for the humor!

*

Heiwa

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  • I have been around a long time.
Re: Orbits. How do they work?
« Reply #396 on: October 23, 2020, 04:04:57 AM »
Markjo - you have proven you are an idiot. Pls stop making a fool of your self.
If you think that understanding physics makes me an idiot, then I suppose I'm an idiot.  But what does that make you?
I am a normal person with a name and address - http://heiwaco.tripod.com/cv.htm - and I want to know how a spacecraft shifts from an orbit around Earth to an orbit around the Moon.
You suggest that the spacecraft should aim for an invisible point L1 in space that orbits at 1011 m/s in space around Earth in a circle. L1 apparently is a location in space where Earth and Moon gravity forces on a spacecraft are equal.
When the spacecraft arrives at point L1 it fires its engine and starts orbiting the Moon.
Let me repeat: How does a spacecraft arrive at point L1 and start orbiting Earth with it at constant speed 1011 m/s? The space craft is already orbiting Earth with variable speed/direction in another plane/orbit.
This statement and your previous statements are an indication that you have no idea how orbital mechanics work,  for one thing you do not come to a stop at the L1 position, you continue to Coast by and tell you reach the moon at which time you fire retrorockets to put yourself in orbit.
P.S. the L1 position is like a mile marker on your trip that is the half way point.
But how do I arrive at and to Coast (?) at an invisible point L1 that moves at 1011 m/s in space around Earth?

Math and physics.
But Neil and Buzz knew nothing about math and physics. They were pilots of war planes napalm bombing Asians! Regardless, 1969 they flew to point L1 in space, fired rockets, started orbit the Moon, left that orbit and landed on the Moon, pissed, took off again to orbit the Moon, they arrived back at point L1, fired rockets, left Moon orbit and dropped straight back on Earth ... into an Ocean ... where POTUS Nixon was crusing around ... on some summer vaccation.
Only complete nutcases believe this nonsense.  Are you a nutcase?
Yes, only complete nutcases believe they knew nothing about math and physics and the other crap you posted. Thanks for admitting you are a complete nutcase which the rest of us knew all along. All you've done here is prove your complete ignorance on the topic. While amusing, it is also very sad for you.  You clearly don't even try to understand yet you still act as if you are an authority on the subject.

Thanks for the humor!
Topic is Orbits. How do they work? So you orbit Earth in your spacecraft and want to orbit the Moon. What do you do? You fly to point L1 in space that orbits Earth at 1011 m/s speed and and altitude > 300 000 km and there you fire some rockets of your spacecraft, which then starts to orbit the Moon. Buzz did it 1969. But he is a tragic alchoholic today and probably also 1969 so he cannot be trusted. So how do changes orbits at point L1 at high speed? And how to find L1?

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frenat

  • 3645
Re: Orbits. How do they work?
« Reply #397 on: October 23, 2020, 05:05:04 AM »
Markjo - you have proven you are an idiot. Pls stop making a fool of your self.
If you think that understanding physics makes me an idiot, then I suppose I'm an idiot.  But what does that make you?
I am a normal person with a name and address - http://heiwaco.tripod.com/cv.htm - and I want to know how a spacecraft shifts from an orbit around Earth to an orbit around the Moon.
You suggest that the spacecraft should aim for an invisible point L1 in space that orbits at 1011 m/s in space around Earth in a circle. L1 apparently is a location in space where Earth and Moon gravity forces on a spacecraft are equal.
When the spacecraft arrives at point L1 it fires its engine and starts orbiting the Moon.
Let me repeat: How does a spacecraft arrive at point L1 and start orbiting Earth with it at constant speed 1011 m/s? The space craft is already orbiting Earth with variable speed/direction in another plane/orbit.
This statement and your previous statements are an indication that you have no idea how orbital mechanics work,  for one thing you do not come to a stop at the L1 position, you continue to Coast by and tell you reach the moon at which time you fire retrorockets to put yourself in orbit.
P.S. the L1 position is like a mile marker on your trip that is the half way point.
But how do I arrive at and to Coast (?) at an invisible point L1 that moves at 1011 m/s in space around Earth?

Math and physics.
But Neil and Buzz knew nothing about math and physics. They were pilots of war planes napalm bombing Asians! Regardless, 1969 they flew to point L1 in space, fired rockets, started orbit the Moon, left that orbit and landed on the Moon, pissed, took off again to orbit the Moon, they arrived back at point L1, fired rockets, left Moon orbit and dropped straight back on Earth ... into an Ocean ... where POTUS Nixon was crusing around ... on some summer vaccation.
Only complete nutcases believe this nonsense.  Are you a nutcase?
Yes, only complete nutcases believe they knew nothing about math and physics and the other crap you posted. Thanks for admitting you are a complete nutcase which the rest of us knew all along. All you've done here is prove your complete ignorance on the topic. While amusing, it is also very sad for you.  You clearly don't even try to understand yet you still act as if you are an authority on the subject.

Thanks for the humor!
Topic is Orbits. How do they work? So you orbit Earth in your spacecraft and want to orbit the Moon. What do you do? You fly to point L1 in space that orbits Earth at 1011 m/s speed and and altitude > 300 000 km and there you fire some rockets of your spacecraft, which then starts to orbit the Moon. Buzz did it 1969. But he is a tragic alchoholic today and probably also 1969 so he cannot be trusted. So how do changes orbits at point L1 at high speed? And how to find L1?
Yes, the topic is orbits and how you keep proving that you don't understand the subject at all yet still consider yourself an authority.

Thanks for the humor!

*

markjo

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Re: Orbits. How do they work?
« Reply #398 on: October 23, 2020, 06:25:53 AM »
Markjo - you have proven you are an idiot. Pls stop making a fool of your self.
If you think that understanding physics makes me an idiot, then I suppose I'm an idiot.  But what does that make you?
I am a normal person with a name and address  and I want to know how a spacecraft shifts from an orbit around Earth to an orbit around the Moon.
Then open your mind and stop insulting the people who try to explain it to you.

You suggest that the spacecraft should aim for an invisible point L1 in space that orbits at 1011 m/s in space around Earth in a circle. L1 apparently is a location in space where Earth and Moon gravity forces on a spacecraft are equal.
No, I did not say that.  My suggestion would be to aim for a point in space that is around 60 or so miles ahead of where the moon will be when you get there.  Again, it's called leading your target.

When the spacecraft arrives at point L1 it fires its engine and starts orbiting the Moon.
No, that is not what I said.  I said that when you pass L1, the moon's gravitational influence is greater than the earth's.  Lunar orbit still requires the appropriate speed and direction for your intended orbit.

Let me repeat: How does a spacecraft arrive at point L1 and start orbiting Earth with it at constant speed 1011 m/s? The space craft is already orbiting Earth with variable speed/direction in another plane/orbit.
Let me repeat: Open your mind to the idea that orbit transfers are possible.  You've been given enough information to figure out the rest.
Science is what happens when preconception meets verification.
Quote from: Robosteve
Besides, perhaps FET is a conspiracy too.
Quote from: bullhorn
It is just the way it is, you understanding it doesn't concern me.

*

Heiwa

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  • I have been around a long time.
Re: Orbits. How do they work?
« Reply #399 on: October 23, 2020, 07:38:02 AM »
Markjo - you have proven you are an idiot. Pls stop making a fool of your self.
If you think that understanding physics makes me an idiot, then I suppose I'm an idiot.  But what does that make you?
I am a normal person with a name and address  and I want to know how a spacecraft shifts from an orbit around Earth to an orbit around the Moon.
Then open your mind and stop insulting the people who try to explain it to you.

You suggest that the spacecraft should aim for an invisible point L1 in space that orbits at 1011 m/s in space around Earth in a circle. L1 apparently is a location in space where Earth and Moon gravity forces on a spacecraft are equal.
No, I did not say that.  My suggestion would be to aim for a point in space that is around 60 or so miles ahead of where the moon will be when you get there.  Again, it's called leading your target.

When the spacecraft arrives at point L1 it fires its engine and starts orbiting the Moon.
No, that is not what I said.  I said that when you pass L1, the moon's gravitational influence is greater than the earth's.  Lunar orbit still requires the appropriate speed and direction for your intended orbit.

Let me repeat: How does a spacecraft arrive at point L1 and start orbiting Earth with it at constant speed 1011 m/s? The space craft is already orbiting Earth with variable speed/direction in another plane/orbit.
Let me repeat: Open your mind to the idea that orbit transfers are possible.  You've been given enough information to figure out the rest.
No, I have an open mind and been given no information that orbit transfers are possible. I have only been told I don't understand anything, etc.
How do I pass in front of something like the Moon or point L1 that has speed 1011 m/s in 3D space? A minute later is 60066 m  further away from me.

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markjo

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Re: Orbits. How do they work?
« Reply #400 on: October 23, 2020, 07:49:12 AM »
How do I pass in front of something like the Moon or point L1 that has speed 1011 m/s in 3D space? A minute later is 60066 m  further away from me.
By aiming very carefully and making mid-course corrections as needed.
Science is what happens when preconception meets verification.
Quote from: Robosteve
Besides, perhaps FET is a conspiracy too.
Quote from: bullhorn
It is just the way it is, you understanding it doesn't concern me.

?

frenat

  • 3645
Re: Orbits. How do they work?
« Reply #401 on: October 23, 2020, 07:53:41 AM »
Markjo - you have proven you are an idiot. Pls stop making a fool of your self.
If you think that understanding physics makes me an idiot, then I suppose I'm an idiot.  But what does that make you?
I am a normal person with a name and address  and I want to know how a spacecraft shifts from an orbit around Earth to an orbit around the Moon.
Then open your mind and stop insulting the people who try to explain it to you.

You suggest that the spacecraft should aim for an invisible point L1 in space that orbits at 1011 m/s in space around Earth in a circle. L1 apparently is a location in space where Earth and Moon gravity forces on a spacecraft are equal.
No, I did not say that.  My suggestion would be to aim for a point in space that is around 60 or so miles ahead of where the moon will be when you get there.  Again, it's called leading your target.

When the spacecraft arrives at point L1 it fires its engine and starts orbiting the Moon.
No, that is not what I said.  I said that when you pass L1, the moon's gravitational influence is greater than the earth's.  Lunar orbit still requires the appropriate speed and direction for your intended orbit.

Let me repeat: How does a spacecraft arrive at point L1 and start orbiting Earth with it at constant speed 1011 m/s? The space craft is already orbiting Earth with variable speed/direction in another plane/orbit.
Let me repeat: Open your mind to the idea that orbit transfers are possible.  You've been given enough information to figure out the rest.
No, I have an open mind and been given no information that orbit transfers are possible. I have only been told I don't understand anything, etc.
How do I pass in front of something like the Moon or point L1 that has speed 1011 m/s in 3D space? A minute later is 60066 m  further away from me.
A real engineer would realize that you could have your own lateral movement as well. Thus it wouldn't pass by you at 1011 m/s. They would think in 3D not just 2D as you seem to. But you've never seemed like a real engineer.


*

Heiwa

  • 9120
  • I have been around a long time.
Re: Orbits. How do they work?
« Reply #402 on: October 23, 2020, 11:03:08 AM »
Markjo - you have proven you are an idiot. Pls stop making a fool of your self.
If you think that understanding physics makes me an idiot, then I suppose I'm an idiot.  But what does that make you?
I am a normal person with a name and address  and I want to know how a spacecraft shifts from an orbit around Earth to an orbit around the Moon.
Then open your mind and stop insulting the people who try to explain it to you.

You suggest that the spacecraft should aim for an invisible point L1 in space that orbits at 1011 m/s in space around Earth in a circle. L1 apparently is a location in space where Earth and Moon gravity forces on a spacecraft are equal.
No, I did not say that.  My suggestion would be to aim for a point in space that is around 60 or so miles ahead of where the moon will be when you get there.  Again, it's called leading your target.

When the spacecraft arrives at point L1 it fires its engine and starts orbiting the Moon.
No, that is not what I said.  I said that when you pass L1, the moon's gravitational influence is greater than the earth's.  Lunar orbit still requires the appropriate speed and direction for your intended orbit.

Let me repeat: How does a spacecraft arrive at point L1 and start orbiting Earth with it at constant speed 1011 m/s? The space craft is already orbiting Earth with variable speed/direction in another plane/orbit.
Let me repeat: Open your mind to the idea that orbit transfers are possible.  You've been given enough information to figure out the rest.
No, I have an open mind and been given no information that orbit transfers are possible. I have only been told I don't understand anything, etc.
How do I pass in front of something like the Moon or point L1 that has speed 1011 m/s in 3D space? A minute later is 60066 m  further away from me.
A real engineer would realize that you could have your own lateral movement as well. Thus it wouldn't pass by you at 1011 m/s. They would think in 3D not just 2D as you seem to. But you've never seemed like a real engineer.
But how to aim for anything flying around at 1011 m/s speed in space to start orbiting it? Wouldn't you first approach it carefully from behind and then slowly try to land on it?

?

frenat

  • 3645
Re: Orbits. How do they work?
« Reply #403 on: October 23, 2020, 11:15:37 AM »
Markjo - you have proven you are an idiot. Pls stop making a fool of your self.
If you think that understanding physics makes me an idiot, then I suppose I'm an idiot.  But what does that make you?
I am a normal person with a name and address  and I want to know how a spacecraft shifts from an orbit around Earth to an orbit around the Moon.
Then open your mind and stop insulting the people who try to explain it to you.

You suggest that the spacecraft should aim for an invisible point L1 in space that orbits at 1011 m/s in space around Earth in a circle. L1 apparently is a location in space where Earth and Moon gravity forces on a spacecraft are equal.
No, I did not say that.  My suggestion would be to aim for a point in space that is around 60 or so miles ahead of where the moon will be when you get there.  Again, it's called leading your target.

When the spacecraft arrives at point L1 it fires its engine and starts orbiting the Moon.
No, that is not what I said.  I said that when you pass L1, the moon's gravitational influence is greater than the earth's.  Lunar orbit still requires the appropriate speed and direction for your intended orbit.

Let me repeat: How does a spacecraft arrive at point L1 and start orbiting Earth with it at constant speed 1011 m/s? The space craft is already orbiting Earth with variable speed/direction in another plane/orbit.
Let me repeat: Open your mind to the idea that orbit transfers are possible.  You've been given enough information to figure out the rest.
No, I have an open mind and been given no information that orbit transfers are possible. I have only been told I don't understand anything, etc.
How do I pass in front of something like the Moon or point L1 that has speed 1011 m/s in 3D space? A minute later is 60066 m  further away from me.
A real engineer would realize that you could have your own lateral movement as well. Thus it wouldn't pass by you at 1011 m/s. They would think in 3D not just 2D as you seem to. But you've never seemed like a real engineer.
But how to aim for anything flying around at 1011 m/s speed in space to start orbiting it? Wouldn't you first approach it carefully from behind and then slowly try to land on it?

And you further prove that you haven't bothered to study ANYTHING regarding orbital mechanics. You've been provided with multiple references to check out here and on multiple other forums. Apparently you've looked at none.
At least you provide a regular source of entertainment.
Thanks for the humor!

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markjo

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Re: Orbits. How do they work?
« Reply #404 on: October 23, 2020, 11:32:00 AM »
But how to aim for anything flying around at 1011 m/s speed in space to start orbiting it?
Are you afraid of large numbers and fast speeds?  The process for aiming at something flying at 1011 m/s is the same as aiming at something flying at 100 m/s or 10 m/s.  Use what you know about the target's speed and direction as well as your own speed and direction to predict where your target will be.

Wouldn't you first approach it carefully from behind and then slowly try to land on it?
You could.  There are lots of trajectories that will get you to the moon depending on how fast you want to get there and how much propellant you have.  ESA used an ion engine to get the SMART-1 probe to the moon using surprisingly little trust and propellant.  But it also took 16 months to get there.
https://www.esa.int/Enabling_Support/Operations/SMART-1
Quote
By accelerating SMART-1 at 0.2 millimetres per second˛, an incredibly gentle thrust could in theory fling the spacecraft right out of the Solar System, if sustained for long enough. In practice, SMART-1 used its ion engine intermittently over 16 months, fighting against Earth’s gravity, to put itself into orbit around the Moon.
Science is what happens when preconception meets verification.
Quote from: Robosteve
Besides, perhaps FET is a conspiracy too.
Quote from: bullhorn
It is just the way it is, you understanding it doesn't concern me.

Re: Orbits. How do they work?
« Reply #405 on: October 23, 2020, 12:27:53 PM »
Here it is from NASA
The link
https://www.nasa.gov/mission_pages/apollo/missions/apollo11.html

Quote
Mission Highlights
Apollo 11 launched from Cape Kennedy on July 16, 1969, carrying Commander Neil Armstrong, Command Module Pilot Michael Collins and Lunar Module Pilot Edwin "Buzz" Aldrin into an initial Earth-orbit of 114 by 116 miles. An estimated 650 million people watched Armstrong's televised image and heard his voice describe the event as he took "...one small step for a man, one giant leap for mankind" on July 20, 1969.

Two hours, 44 minutes and one-and-a-half revolutions after launch, the S-IVB stage reignited for a second burn of five minutes, 48 seconds, placing Apollo 11 into a translunar orbit. The command and service module, or CSM, Columbia separated from the stage, which included the spacecraft-lunar module adapter, or SLA, containing the lunar module, or LM, Eagle. After transposition and jettisoning of the SLA panels on the S-IVB stage, the CSM docked with the LM. The S-IVB stage separated and injected into heliocentric orbit four hours, 40 minutes into the flight.
The first color TV transmission to Earth from Apollo 11 occurred during the translunar coast of the CSM/LM. Later, on July 17, a three-second burn of the SPS was made to perform the second of four scheduled midcourse corrections programmed for the flight. The launch had been so successful that the other three were not needed.
On July 18, Armstrong and Aldrin put on their spacesuits and climbed through the docking tunnel from Columbia to Eagle to check out the LM, and to make the second TV transmission.
On July 19, after Apollo 11 had flown behind the moon out of contact with Earth, came the first lunar orbit insertion maneuver. At about 75 hours, 50 minutes into the flight, a retrograde firing of the SPS for 357.5 seconds placed the spacecraft into an initial, elliptical-lunar orbit of 69 by 190 miles. Later, a second burn of the SPS for 17 seconds placed the docked vehicles into a lunar orbit of 62 by 70.5 miles, which was calculated to change the orbit of the CSM piloted by Collins. The change happened because of lunar-gravity perturbations to the nominal 69 miles required for subsequent LM rendezvous and docking after completion of the lunar landing. Before this second SPS firing, another TV transmission was made, this time from the surface of the moon.
On July 20, Armstrong and Aldrin entered the LM again, made a final check, and at 100 hours, 12 minutes into the flight, the Eagle undocked and separated from Columbia for visual inspection. At 101 hours, 36 minutes, when the LM was behind the moon on its 13th orbit, the LM descent engine fired for 30 seconds to provide retrograde thrust and commence descent orbit insertion, changing to an orbit of 9 by 67 miles, on a trajectory that was virtually identical to that flown by Apollo 10. At 102 hours, 33 minutes, after Columbia and Eagle had reappeared from behind the moon and when the LM was about 300 miles uprange, powered descent initiation was performed with the descent engine firing for 756.3 seconds. After eight minutes, the LM was at "high gate" about 26,000 feet above the surface and about five miles from the landing site.
The descent engine continued to provide braking thrust until about 102 hours, 45 minutes into the mission. Partially piloted manually by Armstrong, the Eagle landed in the Sea of Tranquility in Site 2 at 0 degrees, 41 minutes, 15 seconds north latitude and 23 degrees, 26 minutes east longitude. This was about four miles downrange from the predicted touchdown point and occurred almost one-and-a-half minutes earlier than scheduled. It included a powered descent that ran a mere nominal 40 seconds longer than preflight planning due to translation maneuvers to avoid a crater during the final phase of landing. Attached to the descent stage was a commemorative plaque signed by President Richard M. Nixon and the three astronauts.
The flight plan called for the first EVA to begin after a four-hour rest period, but it was advanced to begin as soon as possible. Nonetheless, it was almost four hours later that Armstrong emerged from the Eagle and deployed the TV camera for the transmission of the event to Earth. At about 109 hours, 42 minutes after launch, Armstrong stepped onto the moon. About 20 minutes later, Aldrin followed him. The camera was then positioned on a tripod about 30 feet from the LM. Half an hour later, President Nixon spoke by telephone link with the astronauts.
Commemorative medallions bearing the names of the three Apollo 1 astronauts who lost their lives in a launch pad fire, and two cosmonauts who also died in accidents, were left on the moon's surface. A one-and-a-half inch silicon disk, containing micro miniaturized goodwill messages from 73 countries, and the names of congressional and NASA leaders, also stayed behind.
During the EVA, in which they both ranged up to 300 feet from the Eagle, Aldrin deployed the Early Apollo Scientific Experiments Package, or EASEP, experiments, and Armstrong and Aldrin gathered and verbally reported on the lunar surface samples. After Aldrin had spent one hour, 33 minutes on the surface, he re-entered the LM, followed 41 minutes later by Armstrong. The entire EVA phase lasted more than two-and-a-half hours, ending at 111 hours, 39 minutes into the mission.
Armstrong and Aldrin spent 21 hours, 36 minutes on the moon's surface. After a rest period that included seven hours of sleep, the ascent stage engine fired at 124 hours, 22 minutes. It was shut down 435 seconds later when the Eagle reached an initial orbit of 11 by 55 miles above the moon, and when Columbia was on its 25th revolution. As the ascent stage reached apolune at 125 hours, 19 minutes, the reaction control system, or RCS, fired so as to nearly circularize the Eagle orbit at about 56 miles, some 13 miles below and slightly behind Columbia. Subsequent firings of the LM RCS changed the orbit to 57 by 72 miles. Docking with Columbia occurred on the CSM's 27th revolution at 128 hours, three minutes into the mission. Armstrong and Aldrin returned to the CSM with Collins. Four hours later, the LM jettisoned and remained in lunar orbit.
Trans-Earth injection of the CSM began July 21 as the SPS fired for two-and-a-half minutes when Columbia was behind the moon in its 59th hour of lunar orbit. Following this, the astronauts slept for about 10 hours. An 11.2 second firing of the SPS accomplished the only midcourse correction required on the return flight. The correction was made July 22 at about 150 hours, 30 minutes into the mission. Two more television transmissions were made during the trans-Earth coast.
Re-entry procedures were initiated July 24, 44 hours after leaving lunar orbit. The SM separated from the CM, which was re-oriented to a heat-shield-forward position. Parachute deployment occurred at 195 hours, 13 minutes. After a flight of 195 hours, 18 minutes, 35 seconds - about 36 minutes longer than planned - Apollo 11 splashed down in the Pacific Ocean, 13 miles from the recovery ship USS Hornet. Because of bad weather in the target area, the landing point was changed by about 250 miles. Apollo 11 landed 13 degrees, 19 minutes north latitude and 169 degrees, nine minutes west longitude July 24, 1969.
What else do you need?
The the universe has no obligation to makes sense to you.
The earth is a globe.

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Heiwa

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Re: Orbits. How do they work?
« Reply #406 on: October 23, 2020, 06:40:40 PM »
It was a great show. Hollywood in space.

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Heiwa

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Re: Orbits. How do they work?
« Reply #407 on: October 23, 2020, 06:47:08 PM »
But how to aim for anything flying around at 1011 m/s speed in space to start orbiting it?
Are you afraid of large numbers and fast speeds?  The process for aiming at something flying at 1011 m/s is the same as aiming at something flying at 100 m/s or 10 m/s.  Use what you know about the target's speed and direction as well as your own speed and direction to predict where your target will be.

Wouldn't you first approach it carefully from behind and then slowly try to land on it?
You could.  There are lots of trajectories that will get you to the moon depending on how fast you want to get there and how much propellant you have.  ESA used an ion engine to get the SMART-1 probe to the moon using surprisingly little trust and propellant.  But it also took 16 months to get there.
https://www.esa.int/Enabling_Support/Operations/SMART-1
Quote
By accelerating SMART-1 at 0.2 millimetres per second˛, an incredibly gentle thrust could in theory fling the spacecraft right out of the Solar System, if sustained for long enough. In practice, SMART-1 used its ion engine intermittently over 16 months, fighting against Earth’s gravity, to put itself into orbit around the Moon.
I am not afraid of anything. But it is a difference between 1000 m/s and 10 m/s speed of an object/Moon to aim for and land on after passing point L1.
Why would you leave the Solar System?

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markjo

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Re: Orbits. How do they work?
« Reply #408 on: October 23, 2020, 08:04:36 PM »
I am not afraid of anything. But it is a difference between 1000 m/s and 10 m/s speed of an object/Moon to aim for and land on after passing point L1.
What's different? ???

Why would you leave the Solar System?
To see what's out there, of course.
Science is what happens when preconception meets verification.
Quote from: Robosteve
Besides, perhaps FET is a conspiracy too.
Quote from: bullhorn
It is just the way it is, you understanding it doesn't concern me.

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Heiwa

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Re: Orbits. How do they work?
« Reply #409 on: October 23, 2020, 09:50:44 PM »
I am not afraid of anything. But it is a difference between 1000 m/s and 10 m/s speed of an object/Moon to aim for and land on after passing point L1.
What's different? ???

Why would you leave the Solar System?
To see what's out there, of course.
Topic is of course: Orbits.  How do they work? and a simple example is visiting the Moon starting by orbiting Earth but aiming on the Moon and then suddenly orbiting the Moon (that orbits Earth) and finally to land on the Moon.
I must say I am not happy with the explanation of leaving Earth orbit and starting in a Moon orbit. How do I aim on the Moon while I am orbiting Earth? The Moon is moving at >1000 m/s in one direction/plane and I am orbiting Earth at variable speeds/directions in another plane in space. How can I arrive in space nearby the Moon? And what shall I do there? Fire a rocket?
Sorry, why cannot any clever person explain it?
« Last Edit: October 23, 2020, 09:53:02 PM by Heiwa »

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Stash

  • 7455
Re: Orbits. How do they work?
« Reply #410 on: October 23, 2020, 09:53:44 PM »
But how to aim for anything flying around at 1011 m/s speed in space to start orbiting it?
Are you afraid of large numbers and fast speeds?  The process for aiming at something flying at 1011 m/s is the same as aiming at something flying at 100 m/s or 10 m/s.  Use what you know about the target's speed and direction as well as your own speed and direction to predict where your target will be.

Wouldn't you first approach it carefully from behind and then slowly try to land on it?
You could.  There are lots of trajectories that will get you to the moon depending on how fast you want to get there and how much propellant you have.  ESA used an ion engine to get the SMART-1 probe to the moon using surprisingly little trust and propellant.  But it also took 16 months to get there.
https://www.esa.int/Enabling_Support/Operations/SMART-1
Quote
By accelerating SMART-1 at 0.2 millimetres per second˛, an incredibly gentle thrust could in theory fling the spacecraft right out of the Solar System, if sustained for long enough. In practice, SMART-1 used its ion engine intermittently over 16 months, fighting against Earth’s gravity, to put itself into orbit around the Moon.
I am not afraid of anything. But it is a difference between 1000 m/s and 10 m/s speed of an object/Moon to aim for and land on after passing point L1.
Why would you leave the Solar System?

What made you the arbiter in terms of what other people should or should't be interested in? Who do you think you are?

*

Stash

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Re: Orbits. How do they work?
« Reply #411 on: October 23, 2020, 10:18:46 PM »
Sorry, why cannot any clever person explain it?

MouseWalker, as have many others, has a clever explanation right here (And you already have been given all of the calculations regarding fuel consumption, trajectories, the calculations involved, everything you could ever want):

Here it is from NASA
The link
https://www.nasa.gov/mission_pages/apollo/missions/apollo11.html

Quote
Mission Highlights
Apollo 11 launched from Cape Kennedy on July 16, 1969, carrying Commander Neil Armstrong, Command Module Pilot Michael Collins and Lunar Module Pilot Edwin "Buzz" Aldrin into an initial Earth-orbit of 114 by 116 miles. An estimated 650 million people watched Armstrong's televised image and heard his voice describe the event as he took "...one small step for a man, one giant leap for mankind" on July 20, 1969.

Two hours, 44 minutes and one-and-a-half revolutions after launch, the S-IVB stage reignited for a second burn of five minutes, 48 seconds, placing Apollo 11 into a translunar orbit. The command and service module, or CSM, Columbia separated from the stage, which included the spacecraft-lunar module adapter, or SLA, containing the lunar module, or LM, Eagle. After transposition and jettisoning of the SLA panels on the S-IVB stage, the CSM docked with the LM. The S-IVB stage separated and injected into heliocentric orbit four hours, 40 minutes into the flight.
The first color TV transmission to Earth from Apollo 11 occurred during the translunar coast of the CSM/LM. Later, on July 17, a three-second burn of the SPS was made to perform the second of four scheduled midcourse corrections programmed for the flight. The launch had been so successful that the other three were not needed.
On July 18, Armstrong and Aldrin put on their spacesuits and climbed through the docking tunnel from Columbia to Eagle to check out the LM, and to make the second TV transmission.
On July 19, after Apollo 11 had flown behind the moon out of contact with Earth, came the first lunar orbit insertion maneuver. At about 75 hours, 50 minutes into the flight, a retrograde firing of the SPS for 357.5 seconds placed the spacecraft into an initial, elliptical-lunar orbit of 69 by 190 miles. Later, a second burn of the SPS for 17 seconds placed the docked vehicles into a lunar orbit of 62 by 70.5 miles, which was calculated to change the orbit of the CSM piloted by Collins. The change happened because of lunar-gravity perturbations to the nominal 69 miles required for subsequent LM rendezvous and docking after completion of the lunar landing. Before this second SPS firing, another TV transmission was made, this time from the surface of the moon.
On July 20, Armstrong and Aldrin entered the LM again, made a final check, and at 100 hours, 12 minutes into the flight, the Eagle undocked and separated from Columbia for visual inspection. At 101 hours, 36 minutes, when the LM was behind the moon on its 13th orbit, the LM descent engine fired for 30 seconds to provide retrograde thrust and commence descent orbit insertion, changing to an orbit of 9 by 67 miles, on a trajectory that was virtually identical to that flown by Apollo 10. At 102 hours, 33 minutes, after Columbia and Eagle had reappeared from behind the moon and when the LM was about 300 miles uprange, powered descent initiation was performed with the descent engine firing for 756.3 seconds. After eight minutes, the LM was at "high gate" about 26,000 feet above the surface and about five miles from the landing site.
The descent engine continued to provide braking thrust until about 102 hours, 45 minutes into the mission. Partially piloted manually by Armstrong, the Eagle landed in the Sea of Tranquility in Site 2 at 0 degrees, 41 minutes, 15 seconds north latitude and 23 degrees, 26 minutes east longitude. This was about four miles downrange from the predicted touchdown point and occurred almost one-and-a-half minutes earlier than scheduled. It included a powered descent that ran a mere nominal 40 seconds longer than preflight planning due to translation maneuvers to avoid a crater during the final phase of landing. Attached to the descent stage was a commemorative plaque signed by President Richard M. Nixon and the three astronauts.
The flight plan called for the first EVA to begin after a four-hour rest period, but it was advanced to begin as soon as possible. Nonetheless, it was almost four hours later that Armstrong emerged from the Eagle and deployed the TV camera for the transmission of the event to Earth. At about 109 hours, 42 minutes after launch, Armstrong stepped onto the moon. About 20 minutes later, Aldrin followed him. The camera was then positioned on a tripod about 30 feet from the LM. Half an hour later, President Nixon spoke by telephone link with the astronauts.
Commemorative medallions bearing the names of the three Apollo 1 astronauts who lost their lives in a launch pad fire, and two cosmonauts who also died in accidents, were left on the moon's surface. A one-and-a-half inch silicon disk, containing micro miniaturized goodwill messages from 73 countries, and the names of congressional and NASA leaders, also stayed behind.
During the EVA, in which they both ranged up to 300 feet from the Eagle, Aldrin deployed the Early Apollo Scientific Experiments Package, or EASEP, experiments, and Armstrong and Aldrin gathered and verbally reported on the lunar surface samples. After Aldrin had spent one hour, 33 minutes on the surface, he re-entered the LM, followed 41 minutes later by Armstrong. The entire EVA phase lasted more than two-and-a-half hours, ending at 111 hours, 39 minutes into the mission.
Armstrong and Aldrin spent 21 hours, 36 minutes on the moon's surface. After a rest period that included seven hours of sleep, the ascent stage engine fired at 124 hours, 22 minutes. It was shut down 435 seconds later when the Eagle reached an initial orbit of 11 by 55 miles above the moon, and when Columbia was on its 25th revolution. As the ascent stage reached apolune at 125 hours, 19 minutes, the reaction control system, or RCS, fired so as to nearly circularize the Eagle orbit at about 56 miles, some 13 miles below and slightly behind Columbia. Subsequent firings of the LM RCS changed the orbit to 57 by 72 miles. Docking with Columbia occurred on the CSM's 27th revolution at 128 hours, three minutes into the mission. Armstrong and Aldrin returned to the CSM with Collins. Four hours later, the LM jettisoned and remained in lunar orbit.
Trans-Earth injection of the CSM began July 21 as the SPS fired for two-and-a-half minutes when Columbia was behind the moon in its 59th hour of lunar orbit. Following this, the astronauts slept for about 10 hours. An 11.2 second firing of the SPS accomplished the only midcourse correction required on the return flight. The correction was made July 22 at about 150 hours, 30 minutes into the mission. Two more television transmissions were made during the trans-Earth coast.
Re-entry procedures were initiated July 24, 44 hours after leaving lunar orbit. The SM separated from the CM, which was re-oriented to a heat-shield-forward position. Parachute deployment occurred at 195 hours, 13 minutes. After a flight of 195 hours, 18 minutes, 35 seconds - about 36 minutes longer than planned - Apollo 11 splashed down in the Pacific Ocean, 13 miles from the recovery ship USS Hornet. Because of bad weather in the target area, the landing point was changed by about 250 miles. Apollo 11 landed 13 degrees, 19 minutes north latitude and 169 degrees, nine minutes west longitude July 24, 1969.

*

Heiwa

  • 9120
  • I have been around a long time.
Re: Orbits. How do they work?
« Reply #412 on: October 24, 2020, 01:32:56 AM »
Sorry, why cannot any clever person explain it?

MouseWalker, as have many others, has a clever explanation right here (And you already have been given all of the calculations regarding fuel consumption, trajectories, the calculations involved, everything you could ever want):

Here it is from NASA
The link
https://www.nasa.gov/mission_pages/apollo/missions/apollo11.html

Quote
Mission Highlights
Apollo 11 launched from Cape Kennedy on July 16, 1969, carrying Commander Neil Armstrong, Command Module Pilot Michael Collins and Lunar Module Pilot Edwin "Buzz" Aldrin into an initial Earth-orbit of 114 by 116 miles. An estimated 650 million people watched Armstrong's televised image and heard his voice describe the event as he took "...one small step for a man, one giant leap for mankind" on July 20, 1969.

Two hours, 44 minutes and one-and-a-half revolutions after launch, the S-IVB stage reignited for a second burn of five minutes, 48 seconds, placing Apollo 11 into a translunar orbit. The command and service module, or CSM, Columbia separated from the stage, which included the spacecraft-lunar module adapter, or SLA, containing the lunar module, or LM, Eagle. After transposition and jettisoning of the SLA panels on the S-IVB stage, the CSM docked with the LM. The S-IVB stage separated and injected into heliocentric orbit four hours, 40 minutes into the flight.
The first color TV transmission to Earth from Apollo 11 occurred during the translunar coast of the CSM/LM. Later, on July 17, a three-second burn of the SPS was made to perform the second of four scheduled midcourse corrections programmed for the flight. The launch had been so successful that the other three were not needed.
On July 18, Armstrong and Aldrin put on their spacesuits and climbed through the docking tunnel from Columbia to Eagle to check out the LM, and to make the second TV transmission.
On July 19, after Apollo 11 had flown behind the moon out of contact with Earth, came the first lunar orbit insertion maneuver. At about 75 hours, 50 minutes into the flight, a retrograde firing of the SPS for 357.5 seconds placed the spacecraft into an initial, elliptical-lunar orbit of 69 by 190 miles. Later, a second burn of the SPS for 17 seconds placed the docked vehicles into a lunar orbit of 62 by 70.5 miles, which was calculated to change the orbit of the CSM piloted by Collins. The change happened because of lunar-gravity perturbations to the nominal 69 miles required for subsequent LM rendezvous and docking after completion of the lunar landing. Before this second SPS firing, another TV transmission was made, this time from the surface of the moon.
On July 20, Armstrong and Aldrin entered the LM again, made a final check, and at 100 hours, 12 minutes into the flight, the Eagle undocked and separated from Columbia for visual inspection. At 101 hours, 36 minutes, when the LM was behind the moon on its 13th orbit, the LM descent engine fired for 30 seconds to provide retrograde thrust and commence descent orbit insertion, changing to an orbit of 9 by 67 miles, on a trajectory that was virtually identical to that flown by Apollo 10. At 102 hours, 33 minutes, after Columbia and Eagle had reappeared from behind the moon and when the LM was about 300 miles uprange, powered descent initiation was performed with the descent engine firing for 756.3 seconds. After eight minutes, the LM was at "high gate" about 26,000 feet above the surface and about five miles from the landing site.
The descent engine continued to provide braking thrust until about 102 hours, 45 minutes into the mission. Partially piloted manually by Armstrong, the Eagle landed in the Sea of Tranquility in Site 2 at 0 degrees, 41 minutes, 15 seconds north latitude and 23 degrees, 26 minutes east longitude. This was about four miles downrange from the predicted touchdown point and occurred almost one-and-a-half minutes earlier than scheduled. It included a powered descent that ran a mere nominal 40 seconds longer than preflight planning due to translation maneuvers to avoid a crater during the final phase of landing. Attached to the descent stage was a commemorative plaque signed by President Richard M. Nixon and the three astronauts.
The flight plan called for the first EVA to begin after a four-hour rest period, but it was advanced to begin as soon as possible. Nonetheless, it was almost four hours later that Armstrong emerged from the Eagle and deployed the TV camera for the transmission of the event to Earth. At about 109 hours, 42 minutes after launch, Armstrong stepped onto the moon. About 20 minutes later, Aldrin followed him. The camera was then positioned on a tripod about 30 feet from the LM. Half an hour later, President Nixon spoke by telephone link with the astronauts.
Commemorative medallions bearing the names of the three Apollo 1 astronauts who lost their lives in a launch pad fire, and two cosmonauts who also died in accidents, were left on the moon's surface. A one-and-a-half inch silicon disk, containing micro miniaturized goodwill messages from 73 countries, and the names of congressional and NASA leaders, also stayed behind.
During the EVA, in which they both ranged up to 300 feet from the Eagle, Aldrin deployed the Early Apollo Scientific Experiments Package, or EASEP, experiments, and Armstrong and Aldrin gathered and verbally reported on the lunar surface samples. After Aldrin had spent one hour, 33 minutes on the surface, he re-entered the LM, followed 41 minutes later by Armstrong. The entire EVA phase lasted more than two-and-a-half hours, ending at 111 hours, 39 minutes into the mission.
Armstrong and Aldrin spent 21 hours, 36 minutes on the moon's surface. After a rest period that included seven hours of sleep, the ascent stage engine fired at 124 hours, 22 minutes. It was shut down 435 seconds later when the Eagle reached an initial orbit of 11 by 55 miles above the moon, and when Columbia was on its 25th revolution. As the ascent stage reached apolune at 125 hours, 19 minutes, the reaction control system, or RCS, fired so as to nearly circularize the Eagle orbit at about 56 miles, some 13 miles below and slightly behind Columbia. Subsequent firings of the LM RCS changed the orbit to 57 by 72 miles. Docking with Columbia occurred on the CSM's 27th revolution at 128 hours, three minutes into the mission. Armstrong and Aldrin returned to the CSM with Collins. Four hours later, the LM jettisoned and remained in lunar orbit.
Trans-Earth injection of the CSM began July 21 as the SPS fired for two-and-a-half minutes when Columbia was behind the moon in its 59th hour of lunar orbit. Following this, the astronauts slept for about 10 hours. An 11.2 second firing of the SPS accomplished the only midcourse correction required on the return flight. The correction was made July 22 at about 150 hours, 30 minutes into the mission. Two more television transmissions were made during the trans-Earth coast.
Re-entry procedures were initiated July 24, 44 hours after leaving lunar orbit. The SM separated from the CM, which was re-oriented to a heat-shield-forward position. Parachute deployment occurred at 195 hours, 13 minutes. After a flight of 195 hours, 18 minutes, 35 seconds - about 36 minutes longer than planned - Apollo 11 splashed down in the Pacific Ocean, 13 miles from the recovery ship USS Hornet. Because of bad weather in the target area, the landing point was changed by about 250 miles. Apollo 11 landed 13 degrees, 19 minutes north latitude and 169 degrees, nine minutes west longitude July 24, 1969.
Yes, I know all this but I still not understand how Apollo 11 managed 1969 to arrive close to the Moon orbiting Earth at 1011 m/s in another direction and when there managed to leave its variable speeds/directions orbit around Earth and start orbiting the Moon, etc. It is a mystery to me. Space is pretty big and we are told Apollo 11 went hole in one to a moving hole (1011 m/s) and made a lot of circus tricks there.

*

markjo

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  • 41648
Re: Orbits. How do they work?
« Reply #413 on: October 24, 2020, 09:55:32 AM »
How can I arrive in space nearby the Moon? And what shall I do there? Fire a rocket?
Yes, firing a rocket at the right time, in the right direction and for the right length of time should get you near the moon.

Sorry, why cannot any clever person explain it?
Why are you not clever enough to understand it?
Science is what happens when preconception meets verification.
Quote from: Robosteve
Besides, perhaps FET is a conspiracy too.
Quote from: bullhorn
It is just the way it is, you understanding it doesn't concern me.

*

Heiwa

  • 9120
  • I have been around a long time.
Re: Orbits. How do they work?
« Reply #414 on: October 24, 2020, 10:13:30 AM »
How can I arrive in space nearby the Moon? And what shall I do there? Fire a rocket?
Yes, firing a rocket at the right time, in the right direction and for the right length of time should get you near the moon.

Sorry, why cannot any clever person explain it?
Why are you not clever enough to understand it?
I avoid drugs. What are you on?

Re: Orbits. How do they work?
« Reply #415 on: October 24, 2020, 07:11:51 PM »
It was a great show. Hollywood in space.

The only Hollywood show is on the wall of the cave you will not leave, Intel you come out of that cave, to see the real world, there is no hope.
you see what you want to see, and nothing else, I can only give you the opportunity to see the real world, you have to see it for what it is. and it is not Hollywood.
The the universe has no obligation to makes sense to you.
The earth is a globe.

*

Heiwa

  • 9120
  • I have been around a long time.
Re: Orbits. How do they work?
« Reply #416 on: October 24, 2020, 07:24:42 PM »
It was a great show. Hollywood in space.

The only Hollywood show is on the wall of the cave you will not leave, Intel you come out of that cave, to see the real world, there is no hope.
you see what you want to see, and nothing else, I can only give you the opportunity to see the real world, you have to see it for what it is. and it is not Hollywood.
Sorry, I live in a penthouse with a roof garden and a view of the Mediterranean sea below. How do you live?

*

JJA

  • 4510
  • Math is math!
Re: Orbits. How do they work?
« Reply #417 on: October 25, 2020, 12:41:29 PM »
Sorry, I live in a penthouse with a roof garden and a view of the Mediterranean sea below. How do you live?

The more he says this the more I'm convinced his only view is of padded walls. :)

*

Stash

  • 7455
Re: Orbits. How do they work?
« Reply #418 on: October 25, 2020, 02:17:45 PM »
Sorry, I live in a penthouse with a roof garden and a view of the Mediterranean sea below. How do you live?

The more he says this the more I'm convinced his only view is of padded walls. :)

Apparently the top floor of the asylum with yard privileges.

*

Heiwa

  • 9120
  • I have been around a long time.
Re: Orbits. How do they work?
« Reply #419 on: October 25, 2020, 09:01:04 PM »
Sorry, I live in a penthouse with a roof garden and a view of the Mediterranean sea below. How do you live?

The more he says this the more I'm convinced his only view is of padded walls. :)
Well, I am happy to say you are wrong.