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The Suppression of UFO Technologies and Extraterrestrial Contact 293
mal atmospheric pressure inside the craft against the zero pressure outside
in space. However, since we didn't have rockets to lift that sort of weight,
we couldn't afford this luxury. We had to make light, [almost] tin foil, capsules
just to get into the ball game.
The differential in pressure between the 14.7 psi (our normal atmospheric
pressure) and the zero pressure of space amounts to 2116 pounds
per square foot of outward loading on the enclosing wall of a capsule.
Compare this figure with the floor of a house—which is designed to be
safely loaded to only 30 pounds per square foot—and you will realize that
relatively heavy metal is vital for skin and skeleton if you want to enjoy
normal pressure. It is wall strength that prevents catastrophic and explosive
depressurization of small capsules. The LEM's walls will be discussed
in more detail later in the book.
BREATHING MIXTURES
The greater lifting capacity of their rockets allowed the Russians the luxury
of using a mixture of 20 percent oxygen and 80 percent nitrogen—the
equivalent to regular air. Naturally it wasn't stored on board as bulky
"compressed air." It was stored separately as liquids in cryogenic tanks.
However, the nitrogen supply was smaller since the gas is inert to the
human body and additional nitrogen is required only to help reestablish
pressure when the cabin is vented to space. Oxygen tanks were larger
because the only oxygen used is that small portion converted into CO 2 , by
the necessity of breathing and this is immediately removed from the cabin
by chemicals. A great deal is also lost when the cabin is vented to space
during depressurization.
PURE OXYGEN
Lacking strong walled capsules, NASA decided right from the beginning
to use 50 percent oxygen and 50 percent nitrogen at 7 psi. This specification
was changed in August 1962, into the use of pure oxygen at 5 psi. 10
A policy shift of this nature indicates that approved design of the capsules
being manufactured was weaker than expected. The amazing thing
is that NASA made this deadly decision despite testing that usually ended
in disaster. One would think that after testing showed disaster that one
would never implement a dangerous policy. But NASA was in a race with
destiny. They had no time for common sense.
NASA TESTS
Here is a list of all government sponsored testing that resulted in oxygen
fires. This information was extracted from Appendix in Mission To The
Moon written by Kennan & Harvey: