An End To The Moon Conspiracy!

Originally posted by bigbrain
Don't you see the special super-secret brown paper that covers the metal, able to defend those 3 poor men from heat and to prevent they could become chickens on the spit?

No I don't see any "super-secret brown paper". The heat shield was not made out of paper, nor anything on the sides of the capsule.

What I do see is the silver mylar strips that cover the sides of the capsule have been mostly burnt off or turned brown and the exposed aluminium under that, which has also been dis-coloured due to the heat of re-entry. The mylar was used for reflecting Sunlight and had nothing to do with re-entry. Nor was there any paper used for heat protection. The heat shield on the bottom is what protected them.

The Apollo Command Module's ablative heat shield was produced by Avco Specialty Materials, a division of Textron Corp., NASA's contractor for the spacecraft's thermal protection system. The heat shield was made from brazed stainless steel honeycomb filled with phenolic epoxy resin as an ablative material. It varied in thickness from 0.7 to 2.7 inches (1.8 to 6.9 cm).

Originally posted by jra
...
The heat shield on the bottom is what protected them.

WHAT A GROSS MISTAKE

On the bottom? NO. Those 3 poor men would have come back this way

Originally posted by Shadowhawk
...
The heat shield was made from brazed stainless steel honeycomb filled with phenolic epoxy resin as an ablative material. It varied in thickness from 0.7 to 2.7 inches (1.8 to 6.9 cm).

HA, HA, HA

PHENOLIC? A PLASTIC SHIELD AGAINST HEAT?











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[edit on 21-4-2007 by 12m8keall2c]

So let's see if I have this right. According to you, the heaviest part of the space craft is going to be on TOP during reentry? Riiiight.

Do you have proof that it doesn’t work? You know that it is pretty much the same stuff used today, right? And it is ceramic. Not plastic
Do you think that the space exploration today is fake?

Originally posted by bigbrain
WHAT A GROSS MISTAKE

On the bottom? NO. Those 3 poor men would have come back this way

Do you realize how foolish you're making yourself look? The bottom is the heaviest, it will not flip around like that. Engineers design capsules that way specifically. It's called a blunt body and I believe they were originally developed for ballistic missiles that when into suborbital altitudes.

Blunt body entry vehicles
H. Julian Allen and A. J. Eggers, Jr. of the National Advisory Committee for Aeronautics (NACA) made the counterintuitive discovery in 1952 that a blunt shape (high drag) made the most effective heat shield. From simple engineering principles, Allen and Eggers showed that the heat load experienced by an entry vehicle was inversely proportional to the drag coefficient, i.e. the greater the drag, the less the heat load. Through making the reentry vehicle blunt, the shock wave and heated shock layer were pushed forward, away from the vehicle's outer wall. Since most of the hot gases were not in direct contact with the vehicle, the heat energy would stay in the shocked gas and simply move around the vehicle to later dissipate into the atmosphere.

Clearly you know very little about this subject. You really need to take the time to research and learn more about this stuff before posting.

HA, HA, HA

PHENOLIC? A PLASTIC SHIELD AGAINST HEAT?

As has been stated, it was a ceramic material, not plastic. Your posts could benefit greatly with a few extra minutes of research.

Thanks, jra, for pointing out bigbrain's ignorance of blunt-body aerodynamics. The Apollo capsule was indeed designed for optimum reentry characteristics.

The phenolic heat shield, however, was indeed largely plastic. It was designed to ablate (erode) during reentry. An ablative heat shield best protects against high heat flux by lifting the hot shock layer gas away from the heat shield's outer wall, creating a cooler boundary layer through blowing. Ablation causes the thermal protection system layer to char, melt, and sublimate.

Ablative heat shielding used on the X-15 during its Mach 6.7 speed run had the consistency of a pink rubber eraser. A layer of white paint provided some additional protection.

Originally posted by jra
...
Engineers design capsules that way specifically
...

WHAT A GROSSEST MISTAKE

Look at THIS IMAGE



The front part of the rocket makes me right

Friction and velocity of air make that cone to run this way

Originally posted by Shadowhawk
...
The phenolic heat shield, however, was indeed largely plastic. It was designed to ablate (erode) during reentry. An ablative heat shield best protects against high heat flux by lifting the hot shock layer gas away from the heat shield's outer wall, creating a cooler boundary layer through blowing. Ablation causes the thermal protection system layer to char, melt, and sublimate.
...

TERRIBLE NONSENSE, TERRIBLE IGNORANCE,

TERRIBLE LIES

THE PHENOLIC HEAT SHIELD

WOULD HAVE MELTED BECAUSE OF FRICTION

WITH AIR INSTANTLY AND THOSE POOR 3 MEN

WOULD HAVE COME OUT LIKE

CHICKENS ON THE SPIT











[edit on 21-4-2007 by bigbrain]



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[edit on 21-4-2007 by 12m8keall2c]

buigbrain please do some reading before posting. All the facts about this have been layed out for anyone to easily see the science, but you just keep stating the same ignorant facts. Try harder.

Originally posted by bodebliss
buigbrain please do some reading before posting. All the facts about this have been layed out for anyone to easily see the science, but you just keep stating the same ignorant facts.

Try harder.

Hey, try softer to understand easy things that NASA BSJ (buffoons, swindlers, jockers) make complex, saying a lot of craps, to cover their ignorance and swindle gullible people like you.

Originally posted by bigbrain

WHAT A GROSSEST MISTAKE

Look at THIS IMAGE



The front part of the rocket makes me right

Friction and velocity of air make that cone to run this way

You're still wrong. In POWERED flight, such as during lift off, then you want the skinny part pointed up, for less drag. On reentry since there's no power to keep it pointed with the most aerodynamic portion leading, it's going to flip around and the heaviest part is going to point down. The heavy part of the Apollo command module was the bottom, where the heat shield is. To use your example, take a coke can, and put weights on the bottom of it. Put a stick through it, turn it upside down, and see which side spins down.

Hey, Zaphod58

haven't you ever play badminton?

en.wikipedia.org...

en.wikipedia.org...

SIMPLE THINGS ARE EASY TO UNDERSTAND, BUT NOT FOR NASA BSJ

A shuttlecock is also WEIGHTED at the nose, so that it will fly nose first, and wide open at the back. Nice try, but no comparison.

I can't believe this little debate has gone on this long!

The Soyuz capsule even comes back blunt end first! Is it fake?!

bigbrain... are you sure it's not big because of a tumor? Seriously... a childrens picture book has more depth than your arguments.

[edit on 22-4-2007 by apc]

High velocity of that cone against the air causes high friction.

High friction causes high heat.

Shape of that cone that comes down at high velocity against the air causes this attitude



Also kids understand my reasonings.

And having a heavier WEIGHT on the bottom would make it come down bottom first. Why do you think that Center of Gravity (CG) is so vital to airplane flight? If the CG is too far in one way or the other the plane tips in that direction. By putting the CG lower on the Apollo Capsule, it's going to cause it to tip towards the bottom. Even children understand that having more weight on one end tips it towards that end.

bigbrain. Meet the Russian Soyuz space vehicle.



This little tin can made it possible for people to get to and from the ISS while the Shuttle was out of service.





See the middle section? That's the reentry module.




Here's what it looks like when it is reentering Earth's atmosphere.




Care to guess which end is coming in first? That's right...





But it's all fake... right?

Originally posted by apc



But it's all fake... right?

RIGHT AS A PLASTIC SHIELD IS A CRAP

A fair and wise individual is able to admit when they are wrong.

In light of the Soyuz reentry system, in which Microsoft billionaire Charles Simonyi returned to Earth on Saturday, will you admit you were incorrect in your assertion that reentry capsules must enter the atmosphere nose first?

despite the delusions of " bigbrain " aerodynamic forces alone will NOT govern the attitude of a balistic projectile

rifle bullets and canon shell must be spin stabilised , arrows , darts and KE penetrators are fin stabilised

the Apollo module was free falling - for the great majority of its re entry - and unpowered - thus its attitude was goverend by its CoG - designed purposfullu to be at the lowest point possible - so it would keep the heatsheild

the taper of the module - was to prevent aiflow heating the vulnerable sides to much

rather like a badmingron shuttlecock as it falls to earth when dropped - no matter what attitude it is dropped in - it almost instantly assumes a "nose down " attitude

quite simple and easy to comprehend - unless you are a troll like " bigbrain"