Results 191 to 200 of about 25,209 (263)

Derivation and Analysis of a State-Space Model for Transient Control of Liquid-Propellant Rocket Engines

International Conference on Mechanical and Aerospace Engineering, 2018
A dynamic model of a liquid-propellant rocket engine has been developed in this paper, with the future purpose of meeting the more demanding requirements of rocket-engines control forced by the new reusability scenarios.
Sergio Pérez-Roca, N. Langlois, J. Marzat, H. Piet-Lahanier, M. Galeotta, F. Farago, S. L. Gonidec   +6 more
semanticscholar   +1 more source

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 ...
openaire   +2 more sources

Liquid-propellant rocket abort fire model.

Journal of Spacecraft and Rockets, 1971
During a rocket launch pad abort, a hazardous payload material can be subjected to a severe thermal environment from the resulting fireball. A model has been developed which specifies heat flux from the fireball as a function of time for any initial propellant quantity.
H. C. Hardee, B. E. Bader, A.B. Donaldson   +2 more
openaire   +2 more sources

Particle swarm algorithm-based damage-mitigating control law analysis and synthesis for liquid-propellant rocket engine

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2018
The damage-mitigating control is a novel technique to ameliorate the reliability and safety of liquid-propellant rocket engines by achieving an optimized trade-off level between overall dynamic performance of the liquid-propellant rocket engine and ...
Y. Cheng, Jianjun Wu
semanticscholar   +1 more source

Application of Improved PSO-BP Neural Network in Fault Detection of Liquid-Propellant Rocket Engine

2018 IEEE International Conference on Mechatronics and Automation (ICMA), 2018
Because liquid-propellant rocket engine (LRE) is working in complex environment, the reliability of some traditional fault detection methods is low due to the characteristics of limited fault samples, small samples, high coupling and nonlinear variation ...
Ningning Li, Wei Xue, Songbo Zhao, Qiang Gao, Dahua Li, Liang Xu   +5 more
semanticscholar   +1 more source

Liquid propellant rocket engines - Their status and future.

Journal of Spacecraft and Rockets, 1967
Performance, weight, design, flexibility, engine cycles and reliability of liquid propellant rocket engines used in NASA and USAF ...
V. R. Larson, R. V. Burry, S. F. Iacobellis   +2 more
openaire   +2 more sources

Liquid-Propellant Rocket Engine Injector Dynamics

Journal of Propulsion and Power, 1998
The dynamic characteristics of liquid-rocket injectors in the presence of intense combustion-chamber and propellant feed-line oscillations are discussed. Liquid-propellant injectors always function in nonsteady e ow environments and are therefore considered as a dynamic component of an engine.
Vladimir G. Bazarov, Vigor Yang
openaire   +2 more sources

Numerical simulation of a liquid propellant rocket motor

Journal of Thermal Science, 2001
This work presents a numerical simulation of the flow field in a liquid propellant rocket engine chamber and exit nozzle using techniques to allow the results to be taken as starting points for designing those propulsive systems. This was done using a Finite Volume method simulating the different flow regimes which usually take place in those systems ...
Carlos E. S. S. Migueis, Nicolas Moisés Cruz Salvador, Demétrio Bastos-Netto, Marcelo M. Morales   +3 more
openaire   +2 more sources

Liquid-Propellant Rocket Engines

2012
The liquid-propellant rocket engine has the characteristics that allow it to deliver thrust at a high-performance level, with an efficiency and operational flexibility that enables a number of mission applications to go forward. Monopropellant and bipropellant versions of this category of engine are discussed in some detail in this chapter.
openaire   +2 more sources

Mathematical Modeling and Simulation for Steady State of a 75-ton Liquid Propellant Rocket Engine

, 2017
This paper deals with mathematical modeling of a 75-ton open-cycle Liquid Propellant Rocket Engine (LPRE) and the steady state simulation based on a nominal operating point.
Kyelim Lee, Cha Jihyoung, Sangho Ko, Soon-Young Park, Eunhwan Jeong   +4 more
semanticscholar   +1 more source