Results 41 to 50 of about 29,920 (238)

The Effects of Non-uniform Distribution of Oxidizer Flow on High-Frequency Combustion Instability

MATEC Web of Conferences, 2019
The numerical calculation of three-dimensional unsteady combustion for the combustion chamber of LOX/kerosene high pressure staged combustion rocket engine was carried out.
Chen Peng, Nie Wansheng, Guo Kangkang, Sun Xing, Liu Yu, Wang Haiqing   +5 more
doaj   +1 more source

Improved combustion chamber optical probe [PDF]

, 1969
Optical inspection probe permits remote inspection of combustion chambers through 360 degrees, and is fully controllable in terms of elevation, focus, and sweep. It eliminates the hazards of physically entering combustion chamber interiors and throats of
Walker, J.
core   +1 more source

An Abrupt Decrease in Electron Temperature Inside the Ionospheric Density Holes During the Launches of Carrier Rockets

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Previous observations have demonstrated that rocket exhaust can trigger ionospheric electron density holes and cause electron temperature enhancements during launches. Using high‐precision measurements from the Sanya incoherent scatter radar, we discovered a previously overlooked decrease in electron temperature.
Linxuan Zhao, Feng Ding, Xinan Yue, Yihui Cai, Junyi Wang, Xiaolin Li, Su Xu, Xu Zhou, Ning Zhang, Mingyuan Li, Yonghui Wang   +10 more
wiley   +1 more source

Advanced Ceramics in Aerospace and Defense: The Interrelationship between Traditional and Additive Manufacturing Approaches

Advanced Materials Technologies, Volume 11, Issue 3, 5 February 2026.
Additive manufacturing revolutionizes production by enabling on‐demand, customized, and sustainable manufacturing with streamlined supply chains. While metal and polymer AM are well‐established, advanced ceramic AM is rapidly emerging, overcoming traditional material challenges.
Kateryna Oleksandrivna Shvydyuk, Senentxu Lanceros‐Mendez, Abílio Pereira Silva   +2 more
wiley   +1 more source

Insights into the Reaction Kinetics of Hydrazine-Based Fuels: A Comprehensive Review of Theoretical and Experimental Methods

Energies, 2023
While researchers have extensively studied the initial decomposition mechanism of Monomethylhydrazine (MMH, CH3NHNH2) in the MMH/dinitrogen tetroxide (NTO) system, the investigation of Unsymmetrical Dimethylhydrazine (UDMH, (CH3)2NNH2) has been limited ...
Jin Wu, Frederick Nii Ofei Bruce, Xin Bai, Xuan Ren, Yang Li   +4 more
doaj   +1 more source

Supersonic-combustion rocket [PDF]

, 1973
A supersonic combustion rocket is provided in which a small rocket motor is substituted for heavy turbo pumps in a conventional rocket engine. The substitution results in a substantial reduction in rocket engine weight. The flame emanating from the small
Franciscus, L. C., Weber, R. J.
core   +1 more source

Comparative Assessment of Energetic Plasticizers Including NFPEG3N3 in a GAP/HMX Formulation: Mechanics, Stability, Combustion, and Performance

Propellants, Explosives, Pyrotechnics, Volume 51, Issue 2, Page 269-276, February 2026.
ABSTRACT We examine the new energetic plasticizer 3‐(2‐(2‐(2‐azidoethoxy)ethoxy)ethoxy)‐4‐nitro‐1,2,5‐oxadiazole (NFPEG3N3), three reference compounds (BDNPA/F, Bu‐NENA, and DNDA‐57), and a plasticizer‐free control in a fixed HMX/GAP composite. NFPEG3N3 provides the strongest low‐temperature properties, yielding the lowest formulation glass transition ...
Patrick Lieber, Uwe Schaller, Thomas M. Klapötke   +2 more
wiley   +1 more source

Modelagem da combustão da dinitramida de amônio por simulação computacional Ammonium dinitramide combustion modeling by computational simulation

Química Nova, 2009
In this work, the combustion process of ammonium dinitramide, ADN, has been modeled in two different situations: decomposition in open environment, with abundant air and decomposition in a rocket motor internal environmental conditions.
Rene Francisco Boschi Gonçalves, José Atílio Fritz Fidel Rocco, Koshun Iha, Francisco Bolivar Correto Machado   +3 more
doaj   +1 more source

Small but mighty: Impact hazards from iron Near‐Earth Objects

Meteoritics &Planetary Science, Volume 61, Issue 2, Page 224-240, February 2026.
Abstract Small asteroids can impact Earth unexpectedly, as demonstrated by the Chelyabinsk event in 2013. The warning times are likely to be short, and the first tools for fast hazard predictions have been developed in the last years for encounters with rocky or cometary objects, which quickly fragment in the atmosphere and cause airbursts. However, in
Robert Luther, Natalia Artemieva, Andrea Schmalen, Kai Wünnemann, Detlef Koschny, Richard Moissl   +5 more
wiley   +1 more source

Development and testing of the solid fuel power plant axisymmetric model applied to regimes of combustion chamber dynamic instability

Авіаційно-космічна техніка та технологія
Innovative use of energy resources in deep space planets is a technology that allows a significant increase in space exploration based on the design of rocket power plants, particularly for lunar landing modules using (Lunar Regolith) propellants ...
Olexiy Nikolayev, Inna Bashliy
doaj   +1 more source