Title: Yes, Apollo Flew Through the Van Allen Belts Going to the Moon Source:
[None] URL Source:https://www.youtube.com/watch?v=bLtgS2_qxJk Published:Mar 14, 2017 Author:Vintage Space Post Date:2018-07-04 20:27:34 by BTP Holdings Keywords:None Views:3325 Comments:54
No, the van Allen radiation belts weren't deal breakers for the Apollo astronauts. They really did go to the Moon. Want weekly Vintage Space ? Don't forget to SUBSCRIBE! www.youtube.com/channel/UCw95T_TgbGHhTml4xZ9yIqg
And tell us why there are no jets of flame or exhaust under it. Do you honestly think it connected with the rocket orbiting earth at 4000 mph thru space for the return trip?
Two places where rocket motors can't functtion: under water and in a vacuum. All they had was compressed air and momentum. I don't think they've been to the moon/Levan.
Two places where rocket motors can't functtion: under water and in a vacuum. All they had was compressed air and momentum. I don't think they've been to the moon/Levan.
Rockets can certainly work in a vacuum. Jet's cannot as they burn oxygen in the environment, but rockets mix both oxygen and fuel, both stored on board, to produce the thrust. In the vacuum of space, rockets are more efficient as there is no aerodynamic drag on the ship, which factors in favor of the lunar modules lift-off from the moon surface.
All they had was compressed air and momentum.
To be exact, not "compressed air" but compressed oxygen. Air is only about 20% oxygen, with most of it nitrogen. For space flight, they use pure oxygen, and the Apollo missions used oxygen so compressed it was a liquid, not a gas. And of course, it was more than oxygen but fuel as well.
I still don't see how they could be guided thru space where there's nothing to push against. A paddle wheeler pushes water, an airplane air etc. I don't see how any earthly craft can travel to another heavenly body in the time alleged -- Pluto is 4598146822 miles from here, for crying out loud!
But I think if we all focus on the ridiculous puniness of the coffee can in which the astronots supposedly returned to earth from the moon, it answers "aye double-ell all" as Bro. Roloff used to say.
The fact that people were ever duped by this nonsense, much less for half a century, much less in the most advanced/educated/"enlightened" societies of all time, is not good.
I still don't see how they could be guided thru space where there's nothing to push against. A paddle wheeler pushes water, an airplane air etc
There is a difference, yes. You are right that a rocket in space does indeed need something to push against, just as a paddle boat and airplane do. What it's pushing against is the expanding gas in the exhaust chamber. Or perhaps more accurately, it's the expanding gas that is pushing against the rocket.
In essence, the rocket has to bring it's own material to push against in order to accelerate, something which paddle boats and planes do not need to do.
The acceleration of the rocket is directly related to the amount of gas that it pushes out of it's exhaust nozzle, and the speed at which it is ejected. (As an aside, the enormous heat generated is a byproduct of the conversion of liquid or solid fuel to gas form and has nothing to do with the acceleration).
And you honestly think we could get one of these things safely hurtling thru space at a million miles a day for 10 years, nudging it this way and that to fotograff different planets?
And you honestly think we could get one of these things safely hurtling thru space at a million miles a day for 10 years, nudging it this way and that to fotograff different planets?
In responding, I guess I would amend my prior post saying that rockets *need* something to push against to accelerate. That is one way, of course but once out of earth's orbit, these probes commonly take advantage of gravitational "slingshot" dynamics to accelerate even more. Much more. This involves passing near a planet as it moves on its orbit around the sun.
As the spacecraft approaches a planet, it accelerates just by virtue of the fact that it's feeling the gravity of the planet. By steering to the back side of the planet ("behind" it, in its path as it's moving on it's orbit about the sun) the course of the space craft will change to something somewhat closer to that of the planet itself, but also pick up a lot more speed. By steering the spacecraft near a lot of the internal planets, some more than once, a spacecraft can pick up a lot more speed than it had when it left earth's orbit under ordinary propulsion.
Where does the energy come from to accelerate the space craft as it passes by a planet? Answer: It slows the planet down in its orbit about the sun. It could be considered the ultimate eco-unfriendly thing one could do. But the amount it slows is so tiny it could only be calculated (with a lot of zeros), and not measured.
In any event, every time an asteroid passes near earth, earth orbit is also altered by a tiny amount, either accelerating, decelerating, and/or altering it's orbital path by a tiny amount.