Results 31 to 40 of about 25,713 (266)
Fault Diagnosis in Partially Observable Petri Nets with Quantum Bayesian Learning
Applied 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
Aerospace, 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
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 +2 more
doaj +1 more source
Model-Based Robust Transient Control of Reusable Liquid-Propellant Rocket Engines
IEEE 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
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]
Омский 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
Aerospace, 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
Low-thrust liquid-propellant rocket engines as part of advanced ultralight rocket vehicle systems
Космические 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
Effect of Secondary Combustion on Thrust Regulation of Gas Generator Cycle Rocket Engine
Applied Sciences, 2022 Thrust regulation is applied to maintain the performance of the liquid propellant rocket engine. The thrust level of a rocket engine can be readily controlled by adjusting the number of propellants introduced into the combustion chamber. In this study, a
Sohaib Khan +4 more
doaj +1 more source
Experimental Study on the Mass Flow Rate of the Self-Pressurizing Propellants in the Rocket Injector
Aerospace, 2021 High vapor pressure propellants such as nitrous oxide are widely used in experimental hybrid and liquid rockets as they can be used in a self-pressurization mode, eliminating the need for external pressurization or pumps and simplifying the design of the
Tomasz Palacz, Jacek Cieślik
doaj +1 more source
Advanced Science, EarlyView.Inspired by nature's competitive maneuvers, this study introduces a combustion‐driven soft actuator that powers a multi‐modal “Jump‐and‐Fly Catbot” (JFC). With millisecond response, high‐force output (over 70 times its weight) and precise control (error within 5%), the robot can jump, fly, hover, and escape from challenging environments, achieving ...
Hongkuan Ma +4 more
wiley +1 more source