All Questions
Tagged with cryogenics spacex
9
questions
3
votes
0
answers
201
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Does Starship run on Slushies?
Cryogenic slush (a mixture of liquid and solid) can potentially store propellants at higher density than cryogenic liquid. For instance, hydrogen slush is 16-20% denser than liquid hydrogen. https://...
- 22.9k
3
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2
answers
416
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Cryogenic storage in Starship header tanks
Since Starship uses cold liquid oxygen and methane fuel in its header tanks, how will these cryogenic tanks been kept full and cold on long missions in space?
- 51
13
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1
answer
1k
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Why did SpaceX swap the LOX and CH4 tanks between Mk1 and SN1?
According to most sources, the Starship Mk.1 had its LOX main tank (not talking about the header tanks here) on top and its main methane tank below. But it seems the SN1 revision, and all subsequent ...
- 131
3
votes
1
answer
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Cryogenic systems in kwajalein Island- Spacex- falcon 1
Is the LOX (liquid oxygen) required for the falcon-1 launch transported or produced?
If transported, how?
If produced, did they set up a cryogenic oxygen plant in Kwajalein?
- 1,161
19
votes
3
answers
4k
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How does SpaceX plan to deal with boiloff on the trip to Mars?
Both BFR (Big Falcon Rocket) booster and BFS (Big Falcon Spaceship) are to run on Raptor engines, fueled with liquid methane and liquid oxygen - cryofuels.
The trip to Mars will take at least a couple ...
- 55.1k
3
votes
1
answer
415
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Falcon-centaur or Falcon-ACES?
For very high delta-V missions (eg outer solar system) the Falcon family really starts to suffer from that fact that its second stage is still using RP-1/LO2 rather than LH2/LO2 with a consequently ...
- 19.6k
4
votes
1
answer
631
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Liquid Helium (4.2K) sealed, then raised to sub-LOX temperature (~70K) - what is the new pressure?
In this question there is discussion of the large differences in temperature between liquid helium-4, subcooled liquid oxygen (sub-LOX) and cold kerosene (RP-1). Approximate temperatures are 4.2K, ~...
- 149k
8
votes
4
answers
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Autogenous pressurization with sub-cooled propellant
In his IAC 2016 talk, Elon Musk said (at 28m 4s in the video) that the ITS booster tanks would use autogenous pressurization. This means there is gaseous oxygen resp. methane in the tank. To stay ...
- 2,179
7
votes
1
answer
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If a rocket launch is delayed, what happens to the cryogenics?
On February 8, SpaceX had to scrub a launch due to an Air Force technical problem. What happens to the cryogenic fuels when such a launch is delayed? Are the tanks (LOx for the Falcon 9) drained? Are ...
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