Results 231 to 240 of about 71,662 (290)

Design of liquid-propellant rocket engines

Journal of Machinery Manufacture and Reliability, 2012
A design method for liquid-propellant rocket engines is proposed, on the basis of models adjusted in response to test results. This method increases the reliability of the results and reduces ground testing of the motors. The effectiveness of the method is confirmed by ground testing and flight experience with the motors developed by Salyut Design ...
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Numerical investigation of combustion instability in a liquid rocket engine: interaction effect between hydrodynamics and acoustic mode

Aerospace Science and Technology, 2023
Yuanzhe Liu, Peijin Liu, Zhuopu Wang, W. Ao, Guanyu Xu, Yu Guan   +5 more
semanticscholar   +1 more source

Intense vibration mechanism analysis and vibration control technology for the combustion chamber of a liquid rocket engine

Journal of Sound and Vibration, 2018
High-amplitude vibration in the combustion chambers of large-thrust liquid rocket engines (LREs) has been the main concern of aerospace structural engineers in China for many years.
Dahua Du, E. He, Daoqiong Huang, G. Wang
semanticscholar   +1 more source

Liquid Oxygen/Liquid Methane Rocket Engine Development

SAE Technical Paper Series, 2007
<div class="htmlview paragraph">Because of low toxicity and low reactivity, methane and oxygen are identified as “green propellants”, and have the highest performance (as measured in ISP) of any practical rocket propellants, except oxygen/hydrogen.
Dan DeLong, Jeff Greason, Khaki Rodway McKee   +2 more
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Liquid rocket engine test facility engineering challenges

Acta Astronautica, 2006
Abstract Liquid rocket engines for launch vehicles and space crafts as well as their subsystems need to be verified and qualified during hot-runs. A high test cadence combined with a flexible test team helps to reduce the cost for test verification during development/qualification as well as during acceptance testing for production.
Hartwig Ellerbrock, Stefan Ziegenhagen
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Geometric Effects of Liquid Rocket Engine Pintle Injectors in Supercritical Combustion

International Journal of Aeronautical and Space Sciences, 2022
Dokeun Hwang, Jonggyu Kim, C. Ryu, Sejin Kwon   +3 more
semanticscholar   +1 more source

A soft-target difference scaling network via relational knowledge distillation for fault detection of liquid rocket engine under multi-source trouble-free samples

Reliability Engineering & System Safety, 2022
Fudong Li, Jinglong Chen, Zijun Liu, Haixin Lv, Jun Wang, Junshe Yuan, Wenrong Xiao   +6 more
semanticscholar   +1 more source

Laser Ignition in Liquid Rocket Engines

30th Joint Propulsion Conference and Exhibit, 1994
The objective of this study was to evaluate the feasibility of using laser ignition in liquid rocket engines. Three mechanisms of laser ignition were evaluated. One method, Laser Induced Spark (LIS) ignition, was tested and the results are presented. For the LIS ignition tests, a Nd:YAG laser, at a wavelength of 1064 nm and repetition rates up to 20 Hz,
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Liquid oxygen monopropellants for rocket engines

30th Joint Propulsion Conference and Exhibit, 1994
A series of tests were performed to determine the feasibility of premixing fuels with liquid oxygen to form a rocket engine monopropellant. The fuels sclccted for cvaluation were kerosene, motor oil, propane, natural gas, ground automobile tires, uncurcd R45HT binder and coal.
openaire   +1 more source

Process Development and Hot-fire Testing of Additively Manufactured NASA HR-1 for Liquid Rocket Engine Applications

AIAA Propulsion and Energy 2021 Forum, 2021
P. Gradl, Thomas W. Teasley, C. Protz, C. Katsarelis, Po-Shou Chen   +4 more
semanticscholar   +1 more source