Ian Pearse
Mars
Apollo (and space) enthusiast
Posts: 308
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Post by Ian Pearse on Dec 14, 2010 8:10:54 GMT -4
Hagbard, please answer my earlier request. Provide us with the data that shows that the documented Apollo construction could not have provided the level of protection required to the occupants of the spacecraft. Show where you got your data from regarding the expected doses of radiation.
If you cannot do this then please retract your statements about the dangers of the Van Allen Belts, as you obviously do not have enough data and/or background knowledge to be able to assess the risks adequately.
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Ian Pearse
Mars
Apollo (and space) enthusiast
Posts: 308
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Post by Ian Pearse on Dec 10, 2010 8:30:26 GMT -4
the Van Allen Belts could have caused a problem to astronauts using the technology that history tells us was available, ie: the Saturn V rocket and Apollo capsule. OK, enough of the "could have", let's have some specifics. Given the trajectory and speed of the Apollo spacecraft through the Belts, give us an estimate of the amount of exposure the astronauts could be expected to have received, and explain how the well-documented construction of the Apollo Spacecraft would have been inadequate to protect the crew.
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Ian Pearse
Mars
Apollo (and space) enthusiast
Posts: 308
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Post by Ian Pearse on Dec 6, 2010 12:57:02 GMT -4
Quote, source unknown:
"I really hate this damn' machine, I wish that they would sell it. It never does just what I want, only what I tell it."
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Ian Pearse
Mars
Apollo (and space) enthusiast
Posts: 308
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Post by Ian Pearse on Dec 3, 2010 8:20:03 GMT -4
Enough already!
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Ian Pearse
Mars
Apollo (and space) enthusiast
Posts: 308
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Post by Ian Pearse on Dec 3, 2010 8:13:35 GMT -4
Like I said, it's as clean and humane as a war can be, but it's still a war. War is by its nature dirty and inhumane. Which is what makes it something to be avoided; sadly, it often isn't.
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Ian Pearse
Mars
Apollo (and space) enthusiast
Posts: 308
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Post by Ian Pearse on Nov 25, 2010 14:16:37 GMT -4
I think I'll have to avoid this film when it comes out. If I went to see it, I'd probably be laughing so much they'd throw me out of the cinema. ;D
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Ian Pearse
Mars
Apollo (and space) enthusiast
Posts: 308
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Post by Ian Pearse on Nov 16, 2010 8:26:46 GMT -4
At a guess I'd say that was the end of the roll image and there has been a bit of a light leak. Not sure what the object is - one of the experiments they've set up, the ribbon being a connecting cable...?
edit; It's AS16-116-18722
edit2: From the captions on the ALSJ the object at the far end of the cable is the LPM (Lunar Portable Magnetometer), and the near object on the left is a Rover wheel.
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Ian Pearse
Mars
Apollo (and space) enthusiast
Posts: 308
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Post by Ian Pearse on Nov 4, 2010 9:54:49 GMT -4
My first 7 years at British Airways was programming in 370 Assembler in what was called the ACP - Airline Control Program. It later became TPF, but after 7 years my brain was sufficiently fried I moved sideways into another area. I thought that was when you became management? My brain wasn't THAT fried! ;D
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Ian Pearse
Mars
Apollo (and space) enthusiast
Posts: 308
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Post by Ian Pearse on Nov 4, 2010 6:45:09 GMT -4
Am I right in thinking that, judging by this response, the only sources you will consider valid for research are free, probably online, sources? What about textbooks on the various subjects being mentioned here, that you can't read without purchase or loan? You said that in the book "From rise to earth" the author says that losing height makes the horisontal speed decrease. So, I want to see the excerpt which says that, and in which context it says that. How can I discuss on this if I don't have the reference? There can be execellent sources for free, they are not necessarily paying. As long as I have not seen the text which talks about it, I won't discuss it. When the lem descends vertically, it doesn't not lose horizontal speed; thetre is no resistance of air in space to slow it down. May be you can provide me with the excerpt which talks about it! When the LM descends vertically, there is a corresponding change in the horizontal speed, because that's the way orbits work. Read the books I have listed and all will be explained, in easy to understand text with no mathematics to confuse.
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Ian Pearse
Mars
Apollo (and space) enthusiast
Posts: 308
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Post by Ian Pearse on Nov 3, 2010 17:59:49 GMT -4
Orbital mechanics are discussed in Chapters 1 and 2. Is it free access? If yes, I'll read it. I cannot give you my answer right now, I don't use to comment something I have not read, I need to know what I'm talking about. Am I right in thinking that, judging by this response, the only sources you will consider valid for research are free, probably online, sources? What about textbooks on the various subjects being mentioned here, that you can't read without purchase or loan?
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Ian Pearse
Mars
Apollo (and space) enthusiast
Posts: 308
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Post by Ian Pearse on Nov 3, 2010 17:54:41 GMT -4
My first 7 years at British Airways was programming in 370 Assembler in what was called the ACP - Airline Control Program. It later became TPF, but after 7 years my brain was sufficiently fried I moved sideways into another area. Those examples above brought back a few memories...
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Ian Pearse
Mars
Apollo (and space) enthusiast
Posts: 308
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Post by Ian Pearse on Nov 3, 2010 16:43:03 GMT -4
Orbital mechanics are discussed in Chapters 1 and 2. Is it free access? If yes, I'll read it. I cannot give you my answer right now, I don't use to comment something I have not read, I need to know what I'm talking about. No, you get it from a library or a bookstore - I got my copy from Amazon. Edit: I'd also recommend the Haynes Apollo 11 Owners' Workshop Manual. Lots on information and very readable. Also from a library or bookstore.
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Ian Pearse
Mars
Apollo (and space) enthusiast
Posts: 308
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Post by Ian Pearse on Nov 3, 2010 16:30:16 GMT -4
Inquistivemind : Are we talking about orbital mechanics, as in space, as in a vacuum? Yes. Concerning the book "To rise from earth", I cannot discuss it if I don't see the reference; I need to know what exactly he is talking about. So, as long I have not seen the exact text, I cannot comment it. Orbital mechanics are discussed in Chapters 1 and 2.
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Ian Pearse
Mars
Apollo (and space) enthusiast
Posts: 308
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Post by Ian Pearse on Nov 3, 2010 16:15:08 GMT -4
inquisitivemind, I recommend you read "To Rise From Earth" by Wayne Lee. Amongst other things it will show you how it is impossible to change your orbit vertically (i.e. orbital radius) without also changing your horizontal speed - the two are inextricably linked, you cannot change one without affecting the other. There's a big difference between the earth and the moon: The earth has an atmosphere, and the moon doesn't. Furthermore the travel from the CMS to the moon was relatively short, and the speed to lose important. No, there is no difference between the Earth and the Moon as far as orbital dynamics goes. If you're confused by the presence of atmosphere, then imagine orbits well above the top of the atmosphere - the same physics applies as to Lunar orbits, and no atmosphere to get in the way. The higher the orbit, the slower the speed.
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Ian Pearse
Mars
Apollo (and space) enthusiast
Posts: 308
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Post by Ian Pearse on Nov 3, 2010 15:55:56 GMT -4
inquisitivemind, I recommend you read "To Rise From Earth" by Wayne Lee. Amongst other things it will show you how it is impossible to change your orbit vertically (i.e. orbital radius) without also changing your horizontal speed - the two are inextricably linked, you cannot change one without affecting the other.
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