Results 1 to 10 of about 9,371 (228)

Dynamic interaction between clustered liquid propellant rocket engines under their asynchronous start-ups

Propulsion and Power Research, 2021
A nonlinear mathematical model of the low-frequency dynamics of the clustered multi-engine rocket propulsion system has been developed and the computations of the engine transient processes during the start-ups of the four-engine propulsion system with a
Sergey I. Dolgopolov, Olexiy D. Nikolayev, Nataliia V. Khoriak   +2 more
doaj   +3 more sources

Particle-Filter-Based Fault Diagnosis for the Startup Process of an Open-Cycle Liquid-Propellant Rocket Engine [PDF]

Sensors
This study introduces a fault diagnosis algorithm based on particle filtering for open-cycle liquid-propellant rocket engines (LPREs). The algorithm serves as a model-based method for the startup process, accounting for more than 30% of engine failures ...
Jihyoung Cha, Sangho Ko, Soon-Young Park
doaj   +2 more sources

A novel heat transfer modeling methodology for regenerative cooling in liquid propellant rocket engines

Case Studies in Thermal Engineering
Liquid propellant rocket engines operate at extremely high temperatures and commonly rely on regenerative cooling to protect chamber walls and maintain structural integrity.
T. Gândara, V. Costa, J. Dias
doaj   +3 more sources

The violent collapse of vapor bubbles in cryogenic liquids [PDF]

Ultrasonics Sonochemistry
Vapor bubbles in cryogenic fluids may collapse violently under subcooled and pressurized conditions. Despite important implications for engineering applications such as cavitation erosion in liquid propellant rocket engines, these intense phenomena are ...
Kewen Peng, Shouceng Tian, Yiqun Zhang, Jingbin Li, Wanjun Qu, Chao Li   +5 more
doaj   +2 more sources

Use of cryogenic components of propellants for liquid-propellant rocket engines and in life support systems of manned space vehicles [PDF]

MATEC Web of Conferences, 2020
The cited materials show the use of oxygen, hydrogen, liquefied natural gases (methane) and fluorine as components of the fuel for liquid-propellant rocket engines (LRE). The reasons for the need to use oxygen as an oxidizing agent are indicated.
Orlin Sergei A.
doaj   +1 more source

Investigation of a Radial Turbines Compatibility for Small Rocket Engine [PDF]

E3S Web of Conferences, 2020
In the radial turbine preliminary design for an expander rocket engine, a comparison was made with axial turbine used in Pratt & Whitney RL10 engine. One of the primary requirements of a liquid propellant rocket engine is the generation of a high thrust,
Leto Angelo
doaj   +1 more source

Numerical Simulation of Chemical Propulsion Systems: Survey and Fundamental Mathematical Modeling Approach

Aerospace, 2023
This study deals with the mathematical modeling and numerical simulation of chemical propulsion systems (CPSs). For this, we investigate and summarize a comprehensive collection of the simulation modeling developments of CPSs in academic works ...
Jihyoung Cha
doaj   +1 more source

The structure of knowledge base to support the development of low-thrust liquid-propellant rocket engines based on computer technologies

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2022
Some data on the knowledge base to support the development of low-thrust liquid-propellant rocket engines using computer technologies are presented. The structure of the base is proposed on the basis of characteristic features of engines, including the ...
V. V. Ryzhkov
doaj   +1 more source

A Hybrid Real/Ideal Gas Mixture Computational Framework to Capture Wave Propagation in Liquid Rocket Combustion Chamber Conditions

Aerospace, 2021
The present work focuses on the development of new mathematical and numerical tools to deal with wave propagation problems in a realistic liquid rocket chamber environment.
Simone D’Alessandro, Marco Pizzarelli, Francesco Nasuti   +2 more
doaj   +1 more source

Regenerative Cooling Comparison of LOX/LCH₄ and LOX/LC₃H₈ Rocket Engines Using the One-Dimensional Regenerative Cooling Modelling Tool ODREC

Applied Sciences, 2023
Due to the extreme temperatures inside the combustion chambers of liquid propellant rocket engines, the walls of the combustion chamber and the nozzle are cooled by either the fuel or the oxidizer in what is known as regenerative cooling.
Yigithan Mehmet Kose, Murat Celik
doaj   +1 more source