Results 21 to 30 of about 25,209 (263)

Concept and Key Technology Analysis of Electric Pump-Fed Liquid Propellant Rocket Engine

open access: yes, 2021
Electric pump-fed liquid propellant rocket engine is an engine that uses electric pumps for propellant supply and cooling cycle. The engine breaks through the traditional pressurization mode of using inert gas to squeeze the propellant or gas-driven ...
Yang Liu   +4 more
semanticscholar   +1 more source

Technology for Obtaining Tangential Holes in the Shell of the Combustion Chamber of a Liquid Propellant Rocket Engine [PDF]

open access: yesE3S Web of Conferences, 2023
Method of obtaining tangential holes in the shell of a combustion chamber of liquid-propellant rocket engine is presented in this article. Advantages and disadvantages of technologies for making small diameter holes are consired. The developed technology
Ryazantsev Alexander   +2 more
doaj   +1 more source

Study of unusable liquid propellant residues evaporation processes parameters in the tanks of launch vehicle worked-off stage in microgravity [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2019
A method is proposed for studying the evaporation process of unusable rocket propellant residues in worked-off stage under weightless conditions. Two options are considered as boundary conditions for liquid rocket propellant residues: a) liquid drop ...
V. I. Trushlyakov, V. A. Urbansky
doaj   +1 more source

Fault Diagnosis in Partially Observable Petri Nets with Quantum Bayesian Learning

open access: yesApplied Sciences, 2023
This paper investigates the quantum Bayesian probability estimation of fault diagnosis based on Partially Observable Petri Nets (POPN) for a liquid-propellant rocket engine system.
Jiufu Liu   +3 more
doaj   +1 more source

Multi-Scenario Trajectory Optimization for Vertical Takeoff and Vertical Landing Vehicles Using the Gauss Pseudospectral Method

open access: yesAerospace, 2022
Vertical takeoff and vertical landing (VTVL) vehicles, based on throttling liquid rocket engines, are attracting increasing attention for their validation of guidance and control techniques during landing.
Yang Liu   +5 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

Model-Based Robust Transient Control of Reusable Liquid-Propellant Rocket Engines

open access: yesIEEE Transactions on Aerospace and Electronic Systems, 2020
Reusable liquid-propellant rocket engines (LPREs) imply more demanding robustness requirements than expendable ones due to their extended capabilities. Therefore, the goal of this article was to develop a control loop adapted to all the operating phases ...
Sergio Pérez-Roca   +6 more
semanticscholar   +1 more source

Mathematical simulation of the start of a multiengine liquid-propellant rocket propulsion system

open access: yesTechnical mechanics, 2020
The need for a lower cost and a shorter time of liquid-propellant rocket engine (LPRE) development and production often leads to the decision to use bundles of multiple engines developed individually in launch vehicles’ sustainer liquid-propellant rocket
O. Pylypenko   +3 more
semanticscholar   +1 more source

The concept of reducing the man-made impact of launches of the promising Irtysh launch vehicle in the impact areas of the Baikonur cosmodrome [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2019
Scientific and methodological approaches to minimizing the man-made impact of launches of promising carrier rockets of the «Irtysh» type by oxygen-kerosene main liquid-propellant rocket engines of the Baiterek rocket complex in areas of falling of the ...
B. T. Suimenbayev   +4 more
doaj   +1 more source

A Coupled Heat Transfer Calculation Strategy for Composite Cooling Liquid Rocket Engine

open access: yesAerospace, 2023
To better understand the characteristics of coupled heat transfer in liquid rocket engines, a calculation scheme is proposed in this paper. This scheme can simulate the coupled heat transfer processes, including combustion and flow in the thrust chamber,
Bo Xu   +4 more
doaj   +1 more source

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