Pre-mixing cryogenic fuels and using only one fuel tankIn a cryogenic fuel rocket, at what pressure is the fuel injected into the engine?How long is it feasible to store cryogenic fuels?How are fuel tanks filled with cryogenic hydrogen?How much potential volume in a rocket's tank is actually used for fuel?How feasible is it to use aluminum and liquid oxygen as future propellant sourced from the moon?How did the Space Shuttle keep its cryogenic fuel cold?Pros and Cons of LH2/LOX vs Other FuelsIs fuel tank pressure structurally important?Safety regulations for storing, handling, and using rocket fuels?What methods are proposed for storing cryogenic fuels (esp. hydrogen) in space for months or years?
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Pre-mixing cryogenic fuels and using only one fuel tank
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Pre-mixing cryogenic fuels and using only one fuel tank
In a cryogenic fuel rocket, at what pressure is the fuel injected into the engine?How long is it feasible to store cryogenic fuels?How are fuel tanks filled with cryogenic hydrogen?How much potential volume in a rocket's tank is actually used for fuel?How feasible is it to use aluminum and liquid oxygen as future propellant sourced from the moon?How did the Space Shuttle keep its cryogenic fuel cold?Pros and Cons of LH2/LOX vs Other FuelsIs fuel tank pressure structurally important?Safety regulations for storing, handling, and using rocket fuels?What methods are proposed for storing cryogenic fuels (esp. hydrogen) in space for months or years?
$begingroup$
A methalox engine is fed from two cryogenic fuel tanks. Why can't the methane and oxygen be mixed as gases, in the desired proportions, and then chilled to a temp that liquefies both? From a single tank a single turbo pump could then feed this into the combustion chamber (part of flow going thru the nozzle cooling channels). Yes, a bit of same mix would be tapped off to power the turbo pump.
Saves the weight of tank bulkheads, separate plumbing, reduces turbo pump complexities. Must be a reason or the rocket scientists would already be doing this, but would like to know what it is.
fuel
asked 1 hour ago
SpaceInMyHeadSpaceInMyHead
7616
$endgroup$
add a comment |
$begingroup$
A methalox engine is fed from two cryogenic fuel tanks. Why can't the methane and oxygen be mixed as gases, in the desired proportions, and then chilled to a temp that liquefies both? From a single tank a single turbo pump could then feed this into the combustion chamber (part of flow going thru the nozzle cooling channels). Yes, a bit of same mix would be tapped off to power the turbo pump.
Saves the weight of tank bulkheads, separate plumbing, reduces turbo pump complexities. Must be a reason or the rocket scientists would already be doing this, but would like to know what it is.
fuel
asked 1 hour ago
SpaceInMyHeadSpaceInMyHead
7616
$endgroup$
add a comment |
$begingroup$
A methalox engine is fed from two cryogenic fuel tanks. Why can't the methane and oxygen be mixed as gases, in the desired proportions, and then chilled to a temp that liquefies both? From a single tank a single turbo pump could then feed this into the combustion chamber (part of flow going thru the nozzle cooling channels). Yes, a bit of same mix would be tapped off to power the turbo pump.
Saves the weight of tank bulkheads, separate plumbing, reduces turbo pump complexities. Must be a reason or the rocket scientists would already be doing this, but would like to know what it is.
fuel
asked 1 hour ago
SpaceInMyHeadSpaceInMyHead
7616
$endgroup$
A methalox engine is fed from two cryogenic fuel tanks. Why can't the methane and oxygen be mixed as gases, in the desired proportions, and then chilled to a temp that liquefies both? From a single tank a single turbo pump could then feed this into the combustion chamber (part of flow going thru the nozzle cooling channels). Yes, a bit of same mix would be tapped off to power the turbo pump.
Saves the weight of tank bulkheads, separate plumbing, reduces turbo pump complexities. Must be a reason or the rocket scientists would already be doing this, but would like to know what it is.
fuel
fuel
asked 1 hour ago
SpaceInMyHeadSpaceInMyHead
7616
asked 1 hour ago
SpaceInMyHeadSpaceInMyHead
7616
asked 1 hour ago
SpaceInMyHeadSpaceInMyHead
7616
asked 1 hour ago
SpaceInMyHeadSpaceInMyHead
7616
asked 1 hour ago
SpaceInMyHeadSpaceInMyHead
7616
7616
add a comment |
add a comment |
3 Answers
3
active
oldest
votes
$begingroup$
They would stratify.
Think of oil and water.
Liquid oxygen is much denser than liquid hydrogen, with 1.141 g/cm3 for LOX vs. 0.07099 g/cm3 for LH.
Thus, you need to install equipment to ensure proper mixing of the two liquids. This adds not only complexity to an already complex machinery, it also adds weight.
answered 1 hour ago
Dohn JoeDohn Joe
39118
$endgroup$
$begingroup$
Good answer! This is the engineering reason. "Because it won't work!"
$endgroup$
– Organic Marble
38 mins ago
$begingroup$
The temperatures aren't the same either. The LH2 would likely freeze the LO2 or the LO2 would boil the LH2.
$endgroup$
– Organic Marble
29 mins ago
$begingroup$
The question is about methalox. Would the same apply? Also, the mass cost/complexity of mixing needs to be balanced against the mass cost/complexity to two tanks and plumbing.
$endgroup$
– SpaceInMyHead
6 mins ago
add a comment |
$begingroup$
In addition to what the other answer said, it would take very little provocation for such a situation to turn into a good way to test the blast resistance of nearby facilities.
answered 1 hour ago
TristanTristan
10.7k13755
$endgroup$
1
$begingroup$
Put another way: If there exists a tank of premixed liquid CH4 and LOX, I desire to be as far away as physically possible.
$endgroup$
– Tristan
23 mins ago
add a comment |
$begingroup$
For the static fire test of AMOS-6 it is believed that the oxygen and RP1 fuel combined together due to a failed bulkhead. In this condition, only a small spark is required to cause a large explosion, as seen in the below video.
answered 1 hour ago
PearsonArtPhoto♦PearsonArtPhoto
83.2k16239454
$endgroup$
$begingroup$
Yes, but it was only an anomaly. :-)
$endgroup$
– SpaceInMyHead
10 mins ago
add a comment |
Your Answer
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
They would stratify.
Think of oil and water.
Liquid oxygen is much denser than liquid hydrogen, with 1.141 g/cm3 for LOX vs. 0.07099 g/cm3 for LH.
Thus, you need to install equipment to ensure proper mixing of the two liquids. This adds not only complexity to an already complex machinery, it also adds weight.
answered 1 hour ago
Dohn JoeDohn Joe
39118
$endgroup$
$begingroup$
Good answer! This is the engineering reason. "Because it won't work!"
$endgroup$
– Organic Marble
38 mins ago
$begingroup$
The temperatures aren't the same either. The LH2 would likely freeze the LO2 or the LO2 would boil the LH2.
$endgroup$
– Organic Marble
29 mins ago
$begingroup$
The question is about methalox. Would the same apply? Also, the mass cost/complexity of mixing needs to be balanced against the mass cost/complexity to two tanks and plumbing.
$endgroup$
– SpaceInMyHead
6 mins ago
add a comment |
$begingroup$
They would stratify.
Think of oil and water.
Liquid oxygen is much denser than liquid hydrogen, with 1.141 g/cm3 for LOX vs. 0.07099 g/cm3 for LH.
Thus, you need to install equipment to ensure proper mixing of the two liquids. This adds not only complexity to an already complex machinery, it also adds weight.
answered 1 hour ago
Dohn JoeDohn Joe
39118
$endgroup$
$begingroup$
Good answer! This is the engineering reason. "Because it won't work!"
$endgroup$
– Organic Marble
38 mins ago
$begingroup$
The temperatures aren't the same either. The LH2 would likely freeze the LO2 or the LO2 would boil the LH2.
$endgroup$
– Organic Marble
29 mins ago
$begingroup$
The question is about methalox. Would the same apply? Also, the mass cost/complexity of mixing needs to be balanced against the mass cost/complexity to two tanks and plumbing.
$endgroup$
– SpaceInMyHead
6 mins ago
add a comment |
$begingroup$
They would stratify.
Think of oil and water.
Liquid oxygen is much denser than liquid hydrogen, with 1.141 g/cm3 for LOX vs. 0.07099 g/cm3 for LH.
Thus, you need to install equipment to ensure proper mixing of the two liquids. This adds not only complexity to an already complex machinery, it also adds weight.
answered 1 hour ago
Dohn JoeDohn Joe
39118
$endgroup$
They would stratify.
Think of oil and water.
Liquid oxygen is much denser than liquid hydrogen, with 1.141 g/cm3 for LOX vs. 0.07099 g/cm3 for LH.
Thus, you need to install equipment to ensure proper mixing of the two liquids. This adds not only complexity to an already complex machinery, it also adds weight.
answered 1 hour ago
Dohn JoeDohn Joe
39118
answered 1 hour ago
Dohn JoeDohn Joe
39118
answered 1 hour ago
Dohn JoeDohn Joe
39118
answered 1 hour ago
Dohn JoeDohn Joe
39118
39118
$begingroup$
Good answer! This is the engineering reason. "Because it won't work!"
$endgroup$
– Organic Marble
38 mins ago
$begingroup$
The temperatures aren't the same either. The LH2 would likely freeze the LO2 or the LO2 would boil the LH2.
$endgroup$
– Organic Marble
29 mins ago
$begingroup$
The question is about methalox. Would the same apply? Also, the mass cost/complexity of mixing needs to be balanced against the mass cost/complexity to two tanks and plumbing.
$endgroup$
– SpaceInMyHead
6 mins ago
add a comment |
$begingroup$
Good answer! This is the engineering reason. "Because it won't work!"
$endgroup$
– Organic Marble
38 mins ago
$begingroup$
The temperatures aren't the same either. The LH2 would likely freeze the LO2 or the LO2 would boil the LH2.
$endgroup$
– Organic Marble
29 mins ago
$begingroup$
The question is about methalox. Would the same apply? Also, the mass cost/complexity of mixing needs to be balanced against the mass cost/complexity to two tanks and plumbing.
$endgroup$
– SpaceInMyHead
6 mins ago
$begingroup$
Good answer! This is the engineering reason. "Because it won't work!"
$endgroup$
– Organic Marble
38 mins ago
$begingroup$
Good answer! This is the engineering reason. "Because it won't work!"
$endgroup$
– Organic Marble
38 mins ago
$begingroup$
The temperatures aren't the same either. The LH2 would likely freeze the LO2 or the LO2 would boil the LH2.
$endgroup$
– Organic Marble
29 mins ago
$begingroup$
The temperatures aren't the same either. The LH2 would likely freeze the LO2 or the LO2 would boil the LH2.
$endgroup$
– Organic Marble
29 mins ago
$begingroup$
The question is about methalox. Would the same apply? Also, the mass cost/complexity of mixing needs to be balanced against the mass cost/complexity to two tanks and plumbing.
$endgroup$
– SpaceInMyHead
6 mins ago
$begingroup$
The question is about methalox. Would the same apply? Also, the mass cost/complexity of mixing needs to be balanced against the mass cost/complexity to two tanks and plumbing.
$endgroup$
– SpaceInMyHead
6 mins ago
add a comment |
$begingroup$
In addition to what the other answer said, it would take very little provocation for such a situation to turn into a good way to test the blast resistance of nearby facilities.
answered 1 hour ago
TristanTristan
10.7k13755
$endgroup$
1
$begingroup$
Put another way: If there exists a tank of premixed liquid CH4 and LOX, I desire to be as far away as physically possible.
$endgroup$
– Tristan
23 mins ago
add a comment |
$begingroup$
In addition to what the other answer said, it would take very little provocation for such a situation to turn into a good way to test the blast resistance of nearby facilities.
answered 1 hour ago
TristanTristan
10.7k13755
$endgroup$
1
$begingroup$
Put another way: If there exists a tank of premixed liquid CH4 and LOX, I desire to be as far away as physically possible.
$endgroup$
– Tristan
23 mins ago
add a comment |
$begingroup$
In addition to what the other answer said, it would take very little provocation for such a situation to turn into a good way to test the blast resistance of nearby facilities.
answered 1 hour ago
TristanTristan
10.7k13755
$endgroup$
In addition to what the other answer said, it would take very little provocation for such a situation to turn into a good way to test the blast resistance of nearby facilities.
answered 1 hour ago
TristanTristan
10.7k13755
answered 1 hour ago
TristanTristan
10.7k13755
answered 1 hour ago
TristanTristan
10.7k13755
answered 1 hour ago
TristanTristan
10.7k13755
10.7k13755
1
$begingroup$
Put another way: If there exists a tank of premixed liquid CH4 and LOX, I desire to be as far away as physically possible.
$endgroup$
– Tristan
23 mins ago
add a comment |
1
$begingroup$
Put another way: If there exists a tank of premixed liquid CH4 and LOX, I desire to be as far away as physically possible.
$endgroup$
– Tristan
23 mins ago
1
1
$begingroup$
Put another way: If there exists a tank of premixed liquid CH4 and LOX, I desire to be as far away as physically possible.
$endgroup$
– Tristan
23 mins ago
$begingroup$
Put another way: If there exists a tank of premixed liquid CH4 and LOX, I desire to be as far away as physically possible.
$endgroup$
– Tristan
23 mins ago
add a comment |
$begingroup$
For the static fire test of AMOS-6 it is believed that the oxygen and RP1 fuel combined together due to a failed bulkhead. In this condition, only a small spark is required to cause a large explosion, as seen in the below video.
answered 1 hour ago
PearsonArtPhoto♦PearsonArtPhoto
83.2k16239454
$endgroup$
$begingroup$
Yes, but it was only an anomaly. :-)
$endgroup$
– SpaceInMyHead
10 mins ago
add a comment |
$begingroup$
For the static fire test of AMOS-6 it is believed that the oxygen and RP1 fuel combined together due to a failed bulkhead. In this condition, only a small spark is required to cause a large explosion, as seen in the below video.
answered 1 hour ago
PearsonArtPhoto♦PearsonArtPhoto
83.2k16239454
$endgroup$
$begingroup$
Yes, but it was only an anomaly. :-)
$endgroup$
– SpaceInMyHead
10 mins ago
add a comment |
$begingroup$
For the static fire test of AMOS-6 it is believed that the oxygen and RP1 fuel combined together due to a failed bulkhead. In this condition, only a small spark is required to cause a large explosion, as seen in the below video.
answered 1 hour ago
PearsonArtPhoto♦PearsonArtPhoto
83.2k16239454
$endgroup$
For the static fire test of AMOS-6 it is believed that the oxygen and RP1 fuel combined together due to a failed bulkhead. In this condition, only a small spark is required to cause a large explosion, as seen in the below video.
answered 1 hour ago
PearsonArtPhoto♦PearsonArtPhoto
83.2k16239454
answered 1 hour ago
PearsonArtPhoto♦PearsonArtPhoto
83.2k16239454
answered 1 hour ago
PearsonArtPhoto♦PearsonArtPhoto
83.2k16239454
answered 1 hour ago
PearsonArtPhoto♦PearsonArtPhoto
83.2k16239454
83.2k16239454
$begingroup$
Yes, but it was only an anomaly. :-)
$endgroup$
– SpaceInMyHead
10 mins ago
add a comment |
$begingroup$
Yes, but it was only an anomaly. :-)
$endgroup$
– SpaceInMyHead
10 mins ago
$begingroup$
Yes, but it was only an anomaly. :-)
$endgroup$
– SpaceInMyHead
10 mins ago
$begingroup$
Yes, but it was only an anomaly. :-)
$endgroup$
– SpaceInMyHead
10 mins ago
add a comment |
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