Results 41 to 50 of about 10,532,032 (323)

Effect of hydrogen-storage pressure on the detonation characteristics of emulsion explosives sensitized by glass microballoons

Defence Technology, 2022
In this study, hydrogen-storage glass microballoons were introduced into emulsion explosives to improve the detonation performance of the explosives. The effect of hydrogen-storage pressure on the detonation characteristics of emulsion explosives was ...
Ji-ping Chen, Hong-hao Ma, Yi-xin Wang, Liang-liang Huang, Zhao-wu Shen   +4 more
doaj   +1 more source

Stagnation Hugoniot Analysis for Steady Combustion Waves in Propulsion Systems [PDF]

, 2006
The combustion mode in a steady-flow propulsion system has a strong influence on the overall efficiency of the system. To evaluate the relative merits of different modes, we propose that it is most appropriate to keep the upstream stagnation state fixed ...
Shepherd, J. E., Wintenberger, E.
core   +1 more source

Experimental validation of rotating detonation for rocket propulsion

Scientific Reports, 2023
Space travel requires high-powered, efficient rocket propulsion systems for controllable launch vehicles and safe planetary entry. Interplanetary travel will rely on energy-dense propellants to produce thrust via combustion as the heat generation process
John W. Bennewitz, Jason R. Burr, Blaine R. Bigler, Robert F. Burke, Aaron Lemcherfi, Tyler Mundt, Taha Rezzag, Ethan W. Plaehn, Jonathan Sosa, Ian V. Walters, S. Alexander Schumaker, Kareem A. Ahmed, Carson D. Slabaugh, Carl Knowlen, William A. Hargus   +14 more
doaj   +1 more source

Numerical Study of the Effects of Injection Conditions on Rotating Detonation Engine Propulsive Performance

Aerospace, 2023
A three-dimensional upwind conservation element and solution element method (CESE) in cylindrical coordinates is first developed to effectively solve the unsteady reactive Euler equations governing a hydrogen–air rotating detonation engine (RDE) with ...
Lisong Shi, E. Fan, Hua Shen, Chih-yung Wen, Shuai Shang, Hongbo Hu   +5 more
semanticscholar   +1 more source

Evaluation of detonation performance of explosives ICM-101, ONC, and TNAZ based on improved VHL equation of state

Defence Technology
Detonation performance is crucial for evaluating the power of high explosives (HEs), and the equation of state (EOS) that accurately describes the high-temperature, high-pressure, and high-temperature, medium-pressure states of detonation products is key
Yong Han, Qin Liu, Yingliang Duan, Yaqi Zhao, Xinping Long   +4 more
doaj   +1 more source

Tri-explosophoric groups driven fused energetic heterocycles featuring superior energetic and safety performances outperforms HMX

Nature Communications, 2022
The design of high energy density materials (HEDM) with good detonation performance but which are also safe to handle is challenging. Here, the authors synthesize a PTX analogue and incorporate explosophoric groups to obtain an HEDM with improved ...
Jie Li, Yubing Liu, Wenqi Ma, Teng Fei, Chunlin He, Siping Pang   +5 more
doaj   +1 more source

Experimental Proof of Concept of a Noncircular Rotating Detonation Engine (RDE) for Propulsion Applications

Aerospace, 2022
A noncircular engine cross-section could provide great flexibility in the integration of propulsion into the airframe. In this work, a tri-arc RDE was constructed and tested as an example of noncircular cross-sectioned RDE.
Jae-Hyuk Lee, Jae-Hoon Ryu, Eun-Sung Lee, Hyung-Seok Han, Jeong-Yeol Choi   +4 more
doaj   +1 more source

Numerical Investigation of the Effect of Equivalent Ratio on Detonation Characteristics and Performance of CH₄/O₂ Rotating Detonation Rocket Engine

Aerospace
Equivalent ratio (ER) is an important factor affecting detonation characteristics and propulsion performance of rotating detonation rocket engine (RDRE).
Xiao Xu, Qixiang Han, Yining Zhang
doaj   +1 more source

Synthesis and characterization of 2-amino-4,5-bis(tetrazol-5-yl)-1,2,3-triazole: A high-nitrogen energetic material with low sensitivities and high thermal stability

Energetic Materials Frontiers, 2023
In this study, a high-nitrogen insensitive energetic material, 2-amino-4,5-bis(tetrazole-5-yl)-1,2,3-triazole (H2ABTT), was successfully synthesized by introducing the N-amino group on the 1,2,3-triazole ring.
Xun Huang, Long Chen, Hai-feng Huang, Jun Yang   +3 more
doaj   +1 more source

Combustion and Propulsion Research [PDF]

, 1963
Combustion chemistry is one of the oldest branches of chemical science. Among its pioneers must be counted Lavoisier, Bunsen, and others whose names belong among those of the founders of chemical science.
Penner, S. S.
core   +1 more source