Questions tagged [engine-design]
Questions regarding the design or design process for a propulsion system.
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Technical Question on Ignition Back Pressure
I am looking for understanding the backpressure or pressure stabilization of the injector inlet of the engines, during ignition (T-0). Are there books or papers that you suggest to check for ...
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TWR of near-term NTR engines
With DRACO aiming for on-orbit demonstration of nuclear thermal rocket propulsion (NTR) in 2027, it seems like a technology that has had on-and-off interest for the last 70 years might finally become ...
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What is the value of air anisotropy?
I am calculating a jet - gas nozzle and to calculate it, I need to know the anisotropy of the air, what is it equal to?
In this formula, the desired value is under the letter ...
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Purging and Relighting Kero-LOX engine [closed]
Note: The question is just to gather knowledge on purging. it is in no way intended towards an actual test without safety considerations.
Going for back to back Static Test Fires, would it help to ...
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RL10 Injector Plate
Could anyone enlighten me with this puzzle ?
The following frames are screenshots from an P&W RL10 engine's video.
It's actually the top view of Fuel Injector Manifold and the LOX/Injector Domes (?...
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How does a liquid rocket engine prevent the combustion from going back in? [duplicate]
To my knowledge, the liquid engines usually utilize a turbopump to gush fuel into the combustion chamber. Later that fuel is mixed and injected in a mist form through the injector to be ignited. ...
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What is the maximum number of times a liquid rocket engine has detonated/ exploded during development?
My question comes from a lot of research and curiosity. Do they stop the development process at 10-20 detonations/ explosions? Or do they keep continuining solving one problem after the other. Modern ...
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Why should nozzles be perfectly expanded?
If I understand it correctly, the only problem with an overexpanded nozzle is (aside from technical difficulties) that the surrounding atmosphere puts pressure on the exhaust gases and reduces engine ...
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Really weird engine nozzle design
This Martin design for an Single Stage To Orbit orbital satellite Launch Vehicle was part of the High Altitude Test Vehicle (HATV) program.
Credit: © Mark Wade
http://www.astronautix.com/m/martinhatv....
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Choice of Ammonia and oxygen as liquid rocket propellants in vortex combustion
I have been thinking lately about the benefits of using liquid ammonia and oxygen as rocket propellants, where ammonia is difficult to burn, what if in a fuel rich closed cycle, ammonia is used to ...
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Solar Reflective Plasma Drive
I understand that solar sails have just recently been progressing to be of use. Could the solar sails be positioned to create a hyperbolic mirror to super heat a substance to produce propulsion along ...
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How to calculate the cooling jacket of a liquid propellant engine with an external component? [closed]
When designing a small rocket engine with a thrust of 100 N, questions arose about the cooling of the combustion chamber and the nozzle apparatus. It was decided to ...
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Atlas V RD-180 Analysis
I was tasked with researching certain properties of the RD-180 engine. I am finding contradictory information, or I am unable to find it at all.
I am looking for the following information
Mixture ...
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Combustion chamber pressure calculation [duplicate]
A liquid propellent rocket engine: how is combustion chamber pressure calculated? Is it the different between turbopump outlet pressure and the drop in the injectors (losses aside)? Thanks!
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Would (Dual Concentric inline Powerhead) FFSC Cycle engine be possible to engineer
I,ve been wondering if it was possible engineer and how we would we work it out DUAL preburner inline FFSCC ENGINE with concentric core and individual concentric turbine inside one another and maybe ...
