Results 61 to 70 of about 1,551 (188)

Investigation of the existing methods for designing pre-combustion chambers in hybrid rocket engines

open access: yesАвіаційно-космічна техніка та технологія
Hybrid propellant rocket engines (HPRE) have been under development and advancement since the beginning of rocket propulsion research, alongside liquid and solid propellant rocket motors.
Maurício Sá Gontijo
doaj   +1 more source

Overview of Al-based nanoenergetic ingredients for solid rocket propulsion

open access: yesDefence Technology, 2018
The introduction of nano-sized energetic ingredients first occurred in Russia about 60 years ago and arose great expectations in the rocket propulsion community, thanks to the higher energy densities and faster energy release rates exhibited with respect
Luigi T. DeLuca
doaj   +1 more source

Analysis of the characteristics of the ejector mode of the pulse detonation propulsion system of the combined acceleration cycle

open access: yesАвіаційно-космічна техніка та технологія
The subjects of this article are processes in the chamber of the pulse detonation propulsion system of the combined acceleration cycle (PSCA). The goal is to identify the most significant factors and study their influence on the defining characteristics ...
Olena Zolotko   +4 more
doaj   +1 more source

Overview of Research Progress on Solid Rocket Ramjet Engines [PDF]

open access: yesEPJ Web of Conferences
Solid rocket ramjet engines are the ideal propulsion devices for high-speed aircraft. This article reviews the research history of solid rocket ramjet engines, analyzes the latest developments both domestically and internationally, and summarizes the key
Dong Yan, Hu Jinchuan
doaj   +1 more source

FREQUENCY PREDICTION OF STAGED COMBUSTION ROCKET ENGINE BASED ON RBF NEURAL NETWORK

open access: yesJixie qiangdu, 2015
In order to avoid creating or modifying the huge amount of finite element model of the rocket engine,application of the RBF( radial basis function) neural network which was used to predict structural frequency of the liquid rocket engine was analyzed.
DU FeiPing, TAN YongHua, CHEN JianHua
doaj  

The problem of combustion instability in liquid rocket engines

open access: yesChallenges and Issues of Modern Science
The purpose of this work is to carry out an overview on combustion instability in liquid propellant rocket engines, its classification, the main principles of occurrence as well as ways to prevent the phenomena while designing of the prospective engine.
Samir Vekilov   +2 more
doaj  

Experimental Investigation on Ablative Characteristics of EPDM Insulation in SRJ Combustion Chamber

open access: yesInternational Journal of Aerospace Engineering
The ablative characteristics of the insulation in the combustion chamber are an essential part of the research on solid rocket ramjet thermal protection. However, the research on ablative characteristics under long working times is quite limited. In this
Wenxiang Cai, Weimin Huang, Weixuan Li
doaj   +1 more source

Numerical simulation study of aluminum particle evaporation combustion process based on SPH method

open access: yesAIP Advances
A large variety of metal fuels is usually added to the modern solid rocket propellants to improve the propellant energy and motor specific impulse and to suppress high frequency unstable combustion. Among them, aluminum is the most common additive.
Du-dou Wang   +3 more
doaj   +1 more source

Designing and Testing of HDPE–N2O Hybrid Rocket Engine

open access: yesEngineering Proceedings
Hybrid Rocket Engines (HREs) combine the advantages of solid and liquid propellants, offering thrust control, simplicity, safety, and cost efficiency.
Triyan Pal Arora   +6 more
doaj   +1 more source

Evaluation of N,N,N′,N′-Tetramethylethylenediamine (TMEDA) as an Alternative Fuel for a Hypergolic Bipropellant Rocket Engine

open access: yesFuels
Experimental research was conducted to characterize the ignition delay time and combustion performance of non-toxic reactants as a possible replacement for highly toxic fuels, such as hydrazine.
Joshua M. Hollingshead   +3 more
doaj   +1 more source

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