Results 11 to 20 of about 23,235 (246)

Ablation performance of 3D C/SiC composite nozzles under double-component liquid power environment

open access: yesCailiao gongcheng, 2022
In order to explore the ablation characteristics of C/SiC ceramic composite nozzles in the working environment of liquid rocket engines, 3D C/SiC composite nozzle was prepared by the precursor impregnation pyrolysis(PIP) process, and the ablation test of
BAI Longteng   +4 more
doaj   +1 more source

Comparison of Optimization Techniques and Objective Functions Using Gas Generator and Staged Combustion LPRE Cycles

open access: yesApplied Sciences, 2022
This paper compares various optimization techniques and objective functions to obtain optimum rocket engine performances. This research proposes a modular optimization framework that provides an optimum design for Gas Generator (GG) and Staged Combustion
Suniya Sadullah Khan   +5 more
doaj   +1 more source

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

open access: yesAerospace, 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

Optimizing the Cooling System of an LH2/LOX Rocket Engine using the Bees Algorithm [PDF]

open access: yesمکانیک هوافضا, 2023
Upgrading the thermal efficiency of the cooling system of liquid rocket engines is one of the most significant and intricate problems in designing modern rocket engines in the missile industry.
Navid Bozorgan
doaj  

Research on a Multiple Mediation Effect Model for Rocket Engine Quality Assessment Based on the SGL Penalty Function [PDF]

open access: yesHangkong bingqi
To tackle the challenges posed by intricate associations among multidimensional indicators, ambiguous transmission pathways, and the identification of pivotal elements in assessing liquid rocket engine quality, a structural equation model is developed ...
Wang Yuhui, Xu Sining, Cheng Xiangjun, Yang Qianjun
doaj   +1 more source

Development of Ultra-Low Specific Speed Centrifugal Pumps Design Method for Small Liquid Rocket Engines

open access: yesAerospace, 2022
With the growth of the satellite industry, the demand for a propulsion system for small launch vehicles and spacecraft has increased. Small liquid rocket engines may require Ultra-Low specific speed centrifugal pumps due to the low required thrust and ...
Hye In Kim   +3 more
doaj   +1 more source

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

open access: yesAerospace, 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   +2 more
doaj   +1 more source

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

open access: yesE3S 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

Research Progress of Decommissioned Solid Rocket Motor Charge Emptying and Recycling Technology [PDF]

open access: yesHangkong bingqi
As the service life of solid rocket engines comes to an end, their operational reliability and performance stability gradually decline. Effectively disposing of large numbers of retired solid rocket engines has become a critical issue.
Zhou Yaping, Lin Zhihui, Wang Maoyu, Dong Jun, Liu Tiansheng, Qiao Haitao
doaj   +1 more source

Low-thrust liquid-propellant rocket engines as part of advanced ultralight rocket vehicle systems

open access: yesКосмические аппараты и технологии, 2021
This work examines the most promising design solutions for the creation of propulsion systems for ultra-light launch vehicles by small private enterprises in the rocket and space industry.
T. A. Basharina   +4 more
doaj   +1 more source

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