Results 21 to 30 of about 16,009 (301)

Launching to an orbit with a chemical propellant staged rocket systems

open access: yesMANAS: Journal of Engineering, 2022
There is one way to explore space by using the space launch vehicles, which is known as rockets, and it can carry useful load named simply as payload of satelite from Earth into Space.
Erk İnger
doaj   +1 more source

Development and analysis of simulation of liquid-propellant rocket engine pump head curve obtaining process [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2021
The paper describes the model of the centrifugal pump head curve obtaining process which helps in consideration of the implementation of automated systems in liquid-propellant rocket engine manufacturing.
D. A. Savchin, V. P. Nazarov
doaj   +1 more source

Petri Nets Applied in Purge Algorithm Analysis for a Rocket Engine Test with Liquid Propellant

open access: yesAerospace, 2023
During the development stage of a space vehicle, instrumented tests are carried out on the ground to prove the operational capacity of each liquid-propellant rocket engine, which is installed in this type of vehicle.
Evandro Rostirolla Bortoloto   +2 more
doaj   +1 more source

The design and performance on 200N-class bipropellant rocket engine using decomposed H2O2 and Kerosene [PDF]

open access: yesINCAS Bulletin, 2019
Mono-propellant thrusters are widely utilized in satellites and space launchers. In many cases, they are using hydrazine as a propellant. However, hydrazine has high toxicity and high risks in using for launch campaign.
Yang-Suk LEE, Jun Hwan JANG
doaj   +1 more source

Particle decay, Oberth effect and a relativistic rocket in the Schwarzschild background [PDF]

open access: yesInt. J. Mod. Phys. D 32 (2023) 2250143, 2021
We relate the known Oberth effect and the nonrelativistic analogue of the Penrose process. When a particle decays to two fragments, we derive the conditions on the angles under which debris can come out for such a process to occur. We also consider the decay and the Oberth effect in the relativistic case, when a particle moves in the background of the ...
arxiv   +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

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