Results 31 to 40 of about 39,486 (297)

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

Technical 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, S. I. Dolhopolov, O. Nikolayev, N. V. Khoriak   +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]

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, V. I. Trushlyakov, G. T. Yermoldina, Zh. B. Suimenbayeva, A. M. Bapyshev   +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, Bing Chen, Jian Peng, Wenyuan Zhou, Xu 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, M. G. Goncharov, S. N. Lymich, V. S. Levin, D. P. Shmatov   +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, Muhammad Umer Sohail, Ihtzaz Qamar, Muzna Tariq, Raees Fida Swati   +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

Influence of surface roughness on the heat transfer coefficient of fluids in an additively manufactured supercharger

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2022
The supercharger is intended for heating a fluid (gaseous helium or gaseous nitrogen) used for the pressurization of fuel tanks of oxidizer and propellant of a rocket engine. The fluid is heated with the generator gas downstream the turbine.
A. S. Smekalkin, A. V. Ivanov
doaj   +1 more source

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

Applied 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, Ihtzaz Qamar, Muhammad Umer Sohail, Raees Fida Swati, Muhammad Azeem Ahmad, Saad Riffat Qureshi   +5 more
doaj   +1 more source

Vaporization-controlled simplified model for liquid propellant rocket engine combustion chamber design

IOP Conference Series: Materials Science and Engineering, 2019
The design of liquid propellant rocket engine (LPRE) is a very complicated process; this is due to two main concerns: First, the requirements to satisfy the issues of performance, stability and compatibility.
H. Belal, A. Makled, M. A. Al-Sanabawy
semanticscholar   +1 more source

Crater Observing Bioinspired Rolling Articulator (COBRA)

Advanced Intelligent Systems, EarlyView.
Crater Observing Bio‐inspired Rolling Articulator (COBRA) is a modular, snake‐inspired robot that addresses the mobility challenges of extraterrestrial exploration sites such as Shackleton Crater. Incorporating snake‐like gaits and tumbling locomotion, COBRA navigates both uneven surfaces and steep crater walls.
Adarsh Salagame, Henry Noyes, Eric Sihite, Arash Kalantari, Alireza Ramezani   +4 more
wiley   +1 more source