Questions tagged [turbopump]
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3
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0answers
44 views
Does engine purging cause dry run of turbo pump in a liquid rocket engine? If it occurs, what is the implication?
Does engine purging in a liquid rocket engine cause dry run of the turbopump? If so, does that have any implication for the design, health, maintenance, or operation of the pump?
How do we calculate ...
4
votes
2answers
133 views
How much of the exhaust speed is due to combustion and how much is due to the injection?
The thrust $F$ of a rocket engine is given by
$$F=\dot{m}v$$
where $\dot{m}$ is the mass flow and $v$ is the exhaust speed.
Now the first factor, $\dot{m}$, is almost entirely due to the turbo pumps (...
4
votes
1answer
78 views
How do pressure fed and pump fed systems compare at different scale of rockets
Rocket Design is all about optimising mass, within cost constraints while accepting a certain amount of risk. Both pressure fed and pump fed systems have their pros and cons, but how do they compare ...
1
vote
0answers
50 views
What is the geometric dimensions of turbo pumps present in SSME?
Here is a really well documented and detailed explanation of the SSME engine.
Looking through this, one can notice that there are no details of the dimensions.
I would like to know about the ...
3
votes
1answer
134 views
What is advantage of independent pumps vs common pump in clustered configuration?
The images of the engine clustering in the Rocket Labs's Electron rocket gives an indication that there are independent drive pumps for individual engines; I am not sure of it. I am not aware of the ...
1
vote
0answers
328 views
Mass, Chamber pressure and cooling type of Rutherford Engine
What are the specifications of Rocket Lab's Rutherford Engine used by the Electron Rocket?
I'm looking for the chamber pressure, propellant mass flow rate, type of cooling for the nozzle, size of ...
0
votes
0answers
27 views
Pressure queries on turbopumps
In the turbopump used in liquid rockets, the stagnation pressure rise is definite. But then the question comes:
Whether static pressure rises or dynamic pressure rises or both rises? If both rises ...
1
vote
2answers
81 views
General queries on pumps
What will be the result if the pipe losses is greater than head produced by the pump?
What will be the result if outlet is closed?
1
vote
1answer
75 views
Pressure in the turbopump
Which pressure is considered, when using the head calculation (stagnation or static)?
Are these pressures absolute or gauge?
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0answers
50 views
Cryogenic engines till date
How many cryogenic engines are there till date.
Names are mostly necessary.
1
vote
0answers
32 views
How do preburners work in gas generator cycle? [duplicate]
In gas generator cycle small portion of the fuel and oxidzier is burned in the preburner to drive centrifugal pumps feeding the main combustion chamber. But how is the fuel/oxidizer fed into the ...
6
votes
0answers
138 views
Why aren't injector pumps used in rockets?
Is there something that makes injectors unsuitable as oxidizer pumps? Seems to me that rockets would benefit significantly from a pump with no moving parts that runs off its own exhaust.
4
votes
1answer
584 views
At what pressure ratio did the fuel turbopumps of the F1 and J2 operate?
I would like to know the operating points of the fuel-turbo-pumps used in the Saturn rocket engine. (From what I could learn via google, the turbo pump went under the name Mark III)
Is there any ...
7
votes
3answers
912 views
How does the propellant flow during descent on SpaceX's Falcon 9 first stage?
Could someone explain to me how, during the descent, the pumps pull the oxidizer and propellant? I could be wrong, but during the burn the propellant should move inside an almost empty tank.
7
votes
1answer
442 views
What are the issues and concerns related to turbopump blade cracks and manned spaceflight?
While the WSJ headline sounds ominous: Congressional Investigators Warn of SpaceX Rocket Defects, Quartz's SpaceX needs to redesign its engine to ensure it is safe for human spaceflight seems to be a ...
