Boeing problems...

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Puffnstuff

Lifer
Mar 9, 2005
16,171
4,866
136
Seems to me that there should always be a standby vehicle for getting astronauts back if something goes awry.
 

Zorba

Lifer
Oct 22, 1999
15,395
10,999
136
Ascent/Entry suits are part of their host vehicles life support systems. While the commercial crew program provided high level requirements to both SpaceX and Boeing none of those requirements would have been specific enough to drive their suits to be effectively the same.

Nor would there have been money provided to certify their suits on the other provider’s spacecraft. So it was never going to be plug and play.
Yeah, I get that. But that means NASA effectively paid to develop two different solutions to the same problem. Seems like it would've been better to spec one suit that they had to design around.
 

Brovane

Diamond Member
Dec 18, 2001
5,777
2,067
136
Yeah, I get that. But that means NASA effectively paid to develop two different solutions to the same problem. Seems like it would've been better to spec one suit that they had to design around.

COTS program both Cargo and Commercial Crew has been a great return on investment for NASA and the US taxpayers. Part of that concept is NASA only spec's high level requirements and letting industry design the solution.
 
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Zorba

Lifer
Oct 22, 1999
15,395
10,999
136
COTS program both Cargo and Commercial Crew has been a great return on investment for NASA and the US taxpayers. Part of that concept is NASA only spec's high level requirements and letting industry design the solution.
Yes, I understand that. Airlines buy COTS aircraft, but still want them to work with standard equipment and cargo pallets/containers. In the grand scheme of things it isn't a big deal, it has just always seemed odd to me that the pressure suit depends on the vehicle.
 

Brovane

Diamond Member
Dec 18, 2001
5,777
2,067
136
Yes, I understand that. Airlines buy COTS aircraft, but still want them to work with standard equipment and cargo pallets/containers. In the grand scheme of things it isn't a big deal, it has just always seemed odd to me that the pressure suit depends on the vehicle.
This is the very first time that the US has actually had more than one crew vehicle that this would actually be a potential concern. I expect as spaceflight becomes more routine and you have start having multiple different types of crew vehicles there will be a push for standardization or at a minimum everyone uses a similar umbilical. So even if you have a different suit it can fly on multiple crew vehicles.
 

Paratus

Lifer
Jun 4, 2004
17,217
14,788
146
Yeah, I get that. But that means NASA effectively paid to develop two different solutions to the same problem. Seems like it would've been better to spec one suit that they had to design around.
Ha! Ascent and/or Entry suits in use or on the horizon: Soyuz, Dragon, Starliner, Orion, HLS SpaceX and HLS Blue Origin.

We’ll have to see if any of the providers decide to reuse a suit somewhere
 
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Paratus

Lifer
Jun 4, 2004
17,217
14,788
146
I'm hopeful the suit debacle will lead to some long term changes.
I’m unaware of a suit debacle. Maybe if/when we have multiple US providers going to the ISS somebody might throw some money at it. Of course the ISS may only have 6 years left.
 
Reactions: Brovane

Brovane

Diamond Member
Dec 18, 2001
5,777
2,067
136
I'm hopeful the suit debacle will lead to some long term changes.

If somehow by engineering magic SpaceX had a adapter that allowed the Boeing IVA suits to be used with Crew Dragon and it was onboard crew-8 Dragon (Endeavour) right now at the ISS, does this change anything for getting Butch and Sunni home?
 

brycejones

Lifer
Oct 18, 2005
28,030
27,436
136
If somehow by engineering magic SpaceX had a adapter that allowed the Boeing IVA suits to be used with Crew Dragon and it was onboard crew-8 Dragon (Endeavour) right now at the ISS, does this change anything for getting Butch and Sunni home?
Does not having a standard for suit connections make sense in the long run for the space industry?
 
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Paratus

Lifer
Jun 4, 2004
17,217
14,788
146
Better question: why is there not an 'emergency mode' where a suit isn't required?
The emergency mode requires the suit. The nominal one doesn’t.


Let me clear up what has to happen for the suit to become an issue.

We’ve been holding that Starliner is still their emergency escape vehicle so until it leaves NET 9/6 their suits will be fine.

After Starliner leaves but before SpaceX Crew-9 arrives 2-3 weeks later with new suits and two empty seats their emergency escape vehicle will be the Crew-8 Dragon without suits.

An emergency (fire, rapid depress, or toxic atmosphere), would have to happen aboard the ISS during those 2-3 weeks. It would take at least 2-3 failures or an MMOD strike to cause an emergency.

Butch and Suni would have to board Crew-8 without suits. If there are no other problems they are perfectly fine all the way home.

For there to be a problem the Crew-8 Dragon would then have to have 2-3 failures that caused a loss of pressure or toxic atmosphere on board during the descent.

So long story short 4-6 specific failures at two very specific times are required to cause a potential loss of life without the suits.

That’s a very low likelihood in safety space.
 

[DHT]Osiris

Lifer
Dec 15, 2015
15,680
14,208
146
The emergency mode requires the suit. The nominal one doesn’t.


Let me clear up what has to happen for the suit to become an issue.

We’ve been holding that Starliner is still their emergency escape vehicle so until it leaves NET 9/6 their suits will be fine.

After Starliner leaves but before SpaceX Crew-9 arrives 2-3 weeks later with new suits and two empty seats their emergency escape vehicle will be the Crew-8 Dragon without suits.

An emergency (fire, rapid depress, or toxic atmosphere), would have to happen aboard the ISS during those 2-3 weeks. It would take at least 2-3 failures or an MMOD strike to cause an emergency.

Butch and Suni would have to board Crew-8 without suits. If there are no other problems they are perfectly fine all the way home.

For there to be a problem the Crew-8 Dragon would then have to have 2-3 failures that caused a loss of pressure or toxic atmosphere on board during the descent.

So long story short 4-6 specific failures at two very specific times are required to cause a potential loss of life without the suits.

That’s a very low likelihood in safety space.
Then is all the hubub about that specific circumstance? Why are those astronauts stuck up there for almost a year at this point?
 

sdifox

No Lifer
Sep 30, 2005
97,307
16,389
126
I still don't understand how Boeing can fuck up this badly considering helium and thrusters were used in the Apollo program.
 
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Zorba

Lifer
Oct 22, 1999
15,395
10,999
136
A fun fact. Assuming Butch and Suni do come back on crew Dragon they will have flown in five different space vehicles

  • Space Shuttle
  • ISS
  • Soyuz
  • Starliner
  • Dragon
Are they the first to come home on a different vehicle type than they went up on? I assume probably not, and this happened before when both the Shuttle and Soyuz were going to ISS at the same time.
 
Reactions: Paratus
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