Results 21 to 30 of about 1,551 (188)

Combustion Modeling in Solid Rocket Motor Plumes [PDF]

, 2019
The thermo-chemistry of plumes emanating from solid rocket motors (SRM) is strongly influenced by hydrogen/oxygen/chlorine chemistry. These after-burning reactions have a significant impact onto the infrared signature, as well as on chemical and thermal loads within the propulsion system.
Ecker, Tobias, Karl, Sebastian, Hannemann, Klaus   +2 more
openaire   +3 more sources

Laser induced fluorescence thermometry with OH (2, 0) band excitation

Journal of Fluid Science and Technology, 2016
Measurement technique that can be adapted to high temperature and pressure environment in the rocket combustion chamber has been limited to qualitative.
Teppei YANO, Sadatake TOMIOKA, Yohei KINO, Yoshio NUNOME   +3 more
doaj   +1 more source

Effects of Compounds in Liquefied Methane on Rocket Engine Operation

Aerospace, 2022
Methane (CH4) is a promising rocket fuel for various future space mission scenarios. It has advantages in terms of cost, performance, and environmental friendliness.
Jan van Schyndel, Elke Goos, Clemens Naumann, Justin S. Hardi, Michael Oschwald   +4 more
doaj   +1 more source

Visualization and Emission Spectra of Flames in Combustion Chamber of Swirling-Oxidizer-Flow-Type Hybrid Rocket Engines

Journal of Thermal Science and Technology, 2011
In order to clarify flame behavior in the combustion chamber of swirling-oxidizer-flow-type hybrid rocket engines, a small hybrid rocket engine with a large quartz glass window was fabricated to observe the inside of the combustion chamber from the front
Saburo YUASA, Tatsuya IDE, Miho MASUGI, Takashi SAKURAI, Noriko SHIRAISHI, Toru SHIMADA   +5 more
doaj   +1 more source

Absorption of Broadband Low‐Frequency Sound Beyond the Thermodynamics Limit: An Acoustic Resonator With Magnetic Bearing

Advanced Science, EarlyView.
This work presents a magnetic‐bearing acoustic resonator that overcomes the thermodynamics limit of sound absorption. By introducing tunable negative stiffness, it achieves broadband low‐frequency absorption within a compact cavity, far exceeding the performance achievable by classic mass‐tuned designs.
Ying Hu, Zhe Zhang, Bohua Huang, Xue Han, Hallam Bastin Kilcoyne, Lixi Huang   +5 more
wiley   +1 more source

Long-Duration Dynamic Numerical Simulation of Combustion and Flow in Hybrid Rocket Motors Considering Nozzle Erosion

Aerospace
Hybrid rocket motors have great development potential due to their outstanding thrust adjustment flexibility and long-term operation ability. However, nozzle erosion during the motor operation can cause an increase in the throat area of the nozzle, which
Xiangyu Meng, Hui Tian, Xiaoting Niu, Hao Zhu, Jingfei Gao, Guobiao Cai   +5 more
doaj   +1 more source

Beyond Traditional Phenolics: Disulfide Bonds for Performance Enhancement of Aerospace Ablation‐Resistant Materials from Processing to Recycling

Advanced Science, EarlyView.
The dynamic disulfide bonds facilitated the development of high‐performance aerospace ablation‐resistant materials. At moderate temperature, the dissociation and recombination of disulfide bonds ensured excellent processability, mechanical properties, and recycling ability of phenolic resin; at high temperature, cleavage of disulfide bonds produced ...
Yu Li, Boyuan Hu, Xiaolong Xing, Huan Yang, Ziqi Zhang, Cheng Bian, Ruixue Bai, Ling Yue, Chengshuang Zhang, Xinli Jing   +9 more
wiley   +1 more source

Combustion of Date Stone and Jojoba Solid Waste in a Hybrid Rocket-like Combustion Chamber

Aerospace
The performance of two solid biomass wastes, date stone and jojoba solid waste, was experimentally examined for their potential application in combustion and propulsion systems.
Saleh B. Alsaidi, Jeongmoo Huh, Mohamed Y. E. Selim   +2 more
doaj   +1 more source

Architecting nano‐Al/HMX/CuO energetic micro‐units unlocks superior interface and highly efficient combustion

InfoMat, EarlyView.
Improving the dispersion of nano‐aluminum is of great importance in explosives and propellants. The spherical Al/HMX/CuO energetic micro‐units were prepared using microchannel technology, which significantly improved the uniformity and dispersion of nano‐Al. It also enhanced the mass and heat transfer efficiency between the fuel and oxidizer components,
Gazi Hao, Tianxu Xi, Yong Kou, Cheng Zhang, Ronghuan Yang, Jiahao Yu, Qiangqiang Lu, Hongyu Yang, Chong Chen, Lei Xiao, Jun Di, Fengqi Zhao, Wei Jiang   +12 more
wiley   +1 more source

Method of transient simulation of combustion processes in a low-thrust rocket engine operating on gaseous hydrogen and oxygen

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2016
The article describes a method of simulating combustion processes in a low-thrust rocket engine. The engine operates on gaseous propellants: oxygen and hydrogen. Transient simulation was performed using ANSYS CFX software.
V. M. Zubanov, L. S. Shabliy, D. V. Stepanov   +2 more
doaj   +1 more source