Results 41 to 50 of about 13,247 (287)
Propellants, Explosives, Pyrotechnics, Volume 51, Issue 1, Page 97-107, January 2026.ABSTRACT Conventional hypergolic propellants cause technical problems due to their toxicity and carcinogenic properties, which increase development costs and lead to significant environmental issues. These challenges can be addressed by incorporating additives with low‐toxicity fuels to render them hypergolic.
Kyounghwan Lee +4 more
wiley +1 more source
Energies, 2021 A rotating detonation rocket engine (RDRE) with various convergent nozzles and chamber lengths is investigated. Three hundred hot-fire tests are performed using methane and oxygen ranging from equivalence ratio equaling 0.5–2.5 and total propellant flow ...
John W. Bennewitz +5 more
doaj +1 more source
Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.Abstract Agglomerations of carbon‐based inclusions and the low adhesion of inclusion‐matrix interfaces are commonly viewed as detrimental to the strength and fracture toughness of ceramic composites. While large, high‐power agglomerations indeed promote microcracking, our computations show that moderate agglomeration levels can enhance energy ...
Elijah N. Borodin +3 more
wiley +1 more source
Study on Separation Characteristics of Nozzles with Large Expansion Ratio of Solid Rocket Motors
Aerospace, 2022 In order to study the flow characteristics of a nozzle with large expansion ratio and its influence on the force on the nozzle, ground cold flow test research and a fluid–structure coupling simulation analysis were carried out (maximum expansion ratio ε =
Zhihong Wang +2 more
doaj +1 more source
Multilayer refractory nozzles produced by plasma-spray process [PDF]
, 1966 Multilayer rocket nozzles formed by plasma spraying have good thermal shock resistance and can be reheated in an oxidizing environment without loss of coating adherence.
Bliton, J. L., Rausch, J. L.
core +1 more source
Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.Abstract Silicon carbide (SiC) is a promising material for hypersonic thermal protection systems, but its complex oxidation behavior—marked by transitions between passive, active, and interfacial bubbling regimes—can lead to catastrophic failure. Existing SiC models typically focus exclusively on either passive or active oxidation.
Théo A. Rulko, Raúl A. Radovitzky
wiley +1 more source
AerospaceThe performances of two linear aerospike nozzles, generated by truncating the same plug contour at 40% and 20% of its ideal length, are investigated numerically within a two-dimensional approximation and compared with each other. The nozzle geometry is a
Jehangir Hassan +4 more
doaj +1 more source
Journal of Engineering, Volume 2026, Issue 1, 2026.This study presents an in‐depth structural evaluation of the convergent nozzle in a microgas turbine engine (MGTE), focusing on the performance of various lightweight materials used in aerospace applications. The research investigates both structural and aerothermal characteristics of the nozzle under realistic operating conditions.
Darshan Kumar Jayaram +4 more
wiley +1 more source
Shock Wave and Aeroelastic Coupling in Overexpanded Nozzle
AerospaceThe growing demand for increasing the engine power of a liquid rocket is driving the development of high-power De-Laval nozzles, which is primarily achieved by increasing the expansion ratio.
Haifeng Hu +3 more
doaj +1 more source
Thrust analysis of rocket landing on planetary granular surfaces [PDF]
EPJ Web of ConferencesWe systematically investigate the thrust exerted by a high-speed air jet using laboratory experiments. The study considers smooth and bumpy rigid plates, as well as a deformable granular bed that simulates planetary surfaces.
Sonar Prasad Ranganath +1 more
doaj +1 more source