Why I suspect Apollo was a hoax.

[Peter B]

Look at it this way: at least Mr Baker has gone a step above Turbonium's insistence on testing the LM by landing on the Earth. At least the sublimator test would be a test in the sort of environment in which it would be operated...

(I know, I know...)

[Count Zero]

He's better than Turbonium?  Wow, THAT'S a ringing endorsement.  [/sarcasm]

[bknight]

Look at it this way: at least Mr Baker has gone a step above Turbonium's insistence on testing the LM by landing on the Earth. At least the sublimator test would be a test in the sort of environment in which it would be operated...

(I know, I know...)

He's better than Turbonium?  Wow, THAT'S a ringing endorsement.  [/sarcasm]

I wished I had been around during the go-go days of the hoax.

[Zakalwe]

Forcibly committed twice you say? Ah, well...third time lucky!
:-)

[raven]

Forcibly committed twice you say? Ah, well...third time lucky!
:-)

Oy, LO already said to knock off the mental health cracks. Plenty of us here either have issues, so, please, out of respect for the rest of us, if not Neil Baker, lay off, please.

[Dalhousie]

I wonder if Mr Baker is aware that the LM (and some other spacecraft) also use sublimators for cooling.  Of course, he probably thinks they are inflatable dummies as well, with no real documentation.  And some are from other countries, which also don't count apparently.

[ka9q]

I wonder if Mr Baker is aware that the LM (and some other spacecraft) also use sublimators for cooling. 

Like the CSM. Radiators were primary, but water boilers were backup. Not sure why they weren't called "sublimators" but the overall phase change (liquid->gas) was the same.

[bknight]

Like the CSM. Radiators were primary, but water boilers were backup. Not sure why they weren't called "sublimators" but the overall phase change (liquid->gas) was the same.

But were they tested in a vacuum chamber and videoed?


I KNOW   I KNOW

[Dalhousie]

I wonder if Mr Baker is aware that the LM (and some other spacecraft) also use sublimators for cooling. 

Like the CSM. Radiators were primary, but water boilers were backup. Not sure why they weren't called "sublimators" but the overall phase change (liquid->gas) was the same.

Sublimation implies that the phase chance is ice > gas.  Remember the PLSS originally had a boiler and then changed to a sublimator.

I wonder what factors drive the choice between a radiator and a boiler/sublimator.  Off the top of my head boiling/sublimation being perhaps more efficient and lighter in the short term, but not so in the longer term.  The Shuttle seems to have used a third variant of the process, a flash evaporator.

[Cat Not Included]

Galileo begged his inquisitors to peer through his telescope to KNOW the truth.

I realize that I'm a little late on commenting on this, but I'm still boggling at the sheer irony of Neil making this comment on a thread in which he was literally told to just look through a telescope (at the ISS).

EDIT: Added a missing "late" to the above comment.

[Ishkabibble]

Galileo begged his inquisitors to peer through his telescope to KNOW the truth.

I realize that I'm a little on commenting on this, but I'm still boggling at the sheer irony of Neil making this comment on a thread in which he was literally told to just look through a telescope (at the ISS).

That would require effort on his part.

Effort which he knows will certainly bring the house of cards he has so laboriously built to support his fantasy, crashing down around his feet.

He also knows (however subconsciously) that he couldn't handle the cognitive dissonance that would ensue, and therefore likely never even saw the connection, lest it upset the applecart. He also knows that he can't actively go and look at any of the evidence that has been copiously presented, or the same results will ensue.  Something like being forced to accept proof of something he held to be false is likely what sets him off in the first place.

[Abaddon]

Galileo begged his inquisitors to peer through his telescope to KNOW the truth.

I realize that I'm a little on commenting on this, but I'm still boggling at the sheer irony of Neil making this comment on a thread in which he was literally told to just look through a telescope (at the ISS).

Fair point. I missed that one. By his argument, we might as easily claim that Jupiter and the Galilean moons are inflatables.

[bknight]

Fair point. I missed that one. By his argument, we might as easily claim that Jupiter and the Galilean moons are inflatables.

You mean they aren't?

[ka9q]

Sublimation implies that the phase chance is ice > gas.  Remember the PLSS originally had a boiler and then changed to a sublimator.

Yes, but that ice first has to freeze from the liquid phase. That releases heat of its own that must be rejected by some of the vapor leaving the sublimator. I suspect the overall effect is the same as simply boiling the liquid directly, i.e., heat of boiling = heat of sublimation - heat of fusion.

I wonder what factors drive the choice between a radiator and a boiler/sublimator.  Off the top of my head boiling/sublimation being perhaps more efficient and lighter in the short term, but not so in the longer term.  The Shuttle seems to have used a third variant of the process, a flash evaporator.

It's probably practicality. The porous-plate sublimator has a nifty self-regulating feature. When the ice forms, it blocks the supply of feed water. As it sublimates, it reopens those pores and allows fresh feedwater to flow and freeze.

Flash evaporation is how conventional air conditioning evaporators work. Because the coolant doesn't freeze, the flow probably has to be actively regulated to match the heat rejection rate. But it probably achieves greater cooling per unit size and mass than a sublimator, and that's probably why it was used on the shuttle where the heat rejection rates are pretty high.

[Abaddon]

Fair point. I missed that one. By his argument, we might as easily claim that Jupiter and the Galilean moons are inflatables.

You mean they aren't?

Sorry, I have said to much. Forget everything. Some well built gentlemen will be calling to your door. Do as they say and all will be well. Maybe.