Please explane this

[OldAirmail]

This article isn't the problem, it seems like a very useful experiment.

NASA to fly material testing experiment on X-37B spaceplane


The question that I have is about the two people in this picture:




The suits that they're wearing aren't designed to keep contaminants away from the X-37B.

They're over pressure suits with a re-breather designed to keep contaminates from entering into the suits.

Here are pictures of cleanroom suits for comparison.

[expat]

From what I have seen of pictures from the Shuttle returns this is pretty standard. ......?

Matt

[OldAirmail]

I may have found the answer - Liquid propellants


Nitrogen tetroxide (N2O4) and hydrazine (N2H4), MMH, or UDMH. "Used in military, orbital, and deep space rockets...."

"The major inconvenience is that these propellants are highly toxic, hence they require careful handling."


The Apollo-Soyuz mishap

"On 24 July 1975, NTO poisoning affected the three U.S. astronauts on board the Apollo-Soyuz Test Project during its final descent."



Although after looking at that picture, I wonder if it wasn't simply a matter of "General, can you add a couple of people and make it look more interesting?

Yeah, have one of them point at something, anything. Good."

[expat]

Hydrazine Í can understand. Many moons ago when I wore a blue suit, the airbase I was stationed at was a major divert for F16 aircraft when operating on emergency power. It was a hydrazine generator and our airfield was so big we had a quarantine area.

Matt

[alrot]

NASA has the biggest vacum chamber of the world I saw on a tv documantary the other day ,maybe is inside of it and they are making test to see if there's a hole

Alex

[expat]

NASA has the biggest vacum chamber of the world I saw on a tv documantary the other day ,maybe is inside of it and they are making test to see if there's a hole

Alex

It was taken on the runway or taxi way at night. This little space craft is very secret, and only lands at night. Well, it has apparently only landed twice anyway as it goes into space to very long periods of time with secret payloads. The powers that be will give no reason or details about what it does.

Matt