All Questions
Tagged with cryogenics fuel
17
questions
3
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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
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1
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Semi-Cryogenic HTP/LH2 engine?
Also see HTP as oxidizer for main propulsion
(for more info on history of H2O2/HTP in rocketry)
Note: HTP and H2O2 will be used interchangeably
I know the Black Arrow LV (The first orbital lipstick) ...
- 1,169
5
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1
answer
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Does a cryogenic liquid propellant engine exist capable of using multiple fuels?
For example, a rocket engine which can use both liquid methane and liquid hydrogen.
- 3,298
12
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1
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Why is an inflatable balloon inside a fuel tank not used to prevent fuel from "sloshing around"?
After seeing all the Starship failures, having something with a membrane keep things in place seems like an obvious solution. Has it been considered or tested - or do we simply lack a material that is ...
- 517
2
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1
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How is Cryogenic fuel kept... Cryogenic in rockets [duplicate]
How is cryogenic fuel & oxidizer kept at cryogenic temperatures in rockets? I am mostly interested in the first stage of launch vehicles rather than something like a Centaur that keeps hydrolox ...
- 703
5
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What methods are proposed for storing cryogenic fuels (esp. hydrogen) in space for months or years?
Current Launch vehicles and upper stages must only keep their fuels for minutes or hours, so they are only insulated to keep boiloff to a few % per day - I've seen 21% per day quoted for Centaur on ...
- 352
5
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Insulation used in the plumbing line of the actual rockets
While using the pipes for plumbing of the liquid propellants at pretty low temperature because of which ice form on the line if not insulated or poorly insulated, which can lead to liquid to gas ...
- 2,246
9
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2
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Why do Ariane rockets not have ice break off on liftoff?
In a recent question asked here, it was asked what debris falling from a Rocket Lab Electron Rocket was during launch.
e.g.:
The answer, was that it was ice that had formed after cryogenic fuel/...
- 355
9
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3
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How was the Centaur stage fueled in the Space Shuttle?
The Space Shuttle had the ability to launch Centaur booster stages stored inside of the Shuttle during launch. How was this stage fueled, being fueled with cryogenic fuels?
- 121k
11
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1
answer
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How did the Space Shuttle keep its cryogenic fuel cold?
As I understand it, the Space Shuttle used cryogenic fuel in its main engines and it kept a supply onboard for the duration of its mission for a deorbit burn. Since Space Shuttle missions often lasted ...
- 395
26
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4
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Does the NK-33 engine require subcooled kerosene so cold that it turns to wax?
It was mentioned in this answer and in several other places on the internet that the kerosene fuel used by NK-33 engines needed to be subcooled enough so that it reached the same density as the LOX, ...
- 149k
24
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3
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How are cryogenic rocket propellants delivered to the launch pad?
I work at a university that gets LN2/LHe (liquid nitrogen and helium) delivered a couple times a week by a large tanker truck outside my office. It seems to work well enough to deliver a couple tons ...
- 2,798
5
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1
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What temperature difference do the injectors in a cryo engine experience?
A quick follow-up to Does ISRO's Cryogenic Upper Stage have restart capability?
What temperature difference do the injectors in a cryo engine experience between the propellant tank, and the ...
- 13.6k
20
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3
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How are fuel tanks filled with cryogenic hydrogen?
Cryogenic hydrogen can react with the atmospheric Oxygen to produce an explosion:
as well as being cold enough to liquefy (and possibly solidify) atmospheric oxygen, which can be an explosion ...
- 18k
15
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1
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How long is it feasible to store cryogenic fuels?
Working with liquid nitrogen all day, I am constantly bothered by their boiling away, forcing me to go get more from the storage dewar. Likewise should be the case with any cryogen, e.g. LH2 and LOX ...
- 2,798