Results 71 to 80 of about 2,146 (234)

The Effects of Material‐Filled Voids on Detonation Wave Shape in Rubberized RDX Explosives

Propellants, Explosives, Pyrotechnics, Volume 49, Issue 12, December 2024.
Abstract The sensitivity of explosives is affected by inhomogeneities within the material. This is evident in the increased shock sensitivity of explosives with slightly lower densities resulting from an increased number of hotspots. The influence of hotspots on explosive initiation has been well studied; however, few studies have been conducted on the
Joseph R. Lawrence, Austin D. Koeblitz, Gabriel A. Montoya, Pradyun Srinidhi, Steven F. Son   +4 more
wiley   +1 more source

Review of novel energetic polymers and binders – high energy propellant ingredients for the new space race

Designed Monomers and Polymers, 2019
Current solid rocket propellant formulations still employ traditional ingredients utilized since the 1960s, such as hydroxyl terminated polybutadiene (HTPB).
Tianze Cheng
doaj   +1 more source

Technique for Evaluating the Erosive Properties of Ablative Internal Insulation Materials [PDF]

A technique for determining the average erosion rate versus Mach number of candidate internal insulation materials was developed for flight motor applications in 12 inch I.D. test firing hardware.
Hitner, J. M., McComb, J. C.
core   +1 more source

Block 2 SRM conceptual design studies. Volume 1, Book 1: Conceptual design package [PDF]

The conceptual design studies of a Block 2 Solid Rocket Motor (SRM) require the elimination of asbestos-filled insulation and was open to alternate designs, such as case changes, different propellants, modified burn rate - to improve reliability and ...
Doll, Dan, Hayes, Fred, Maughan, Jeff, Miller, John, Moore, Walt, Ralston, Joe, Richardson, Jennifer, Smith, Brad, Williams, Neal   +8 more
core   +1 more source

Performance evaluation of commercial copper chromites as burning rate catalyst for solid propellants [PDF]

, 2010
Copper chromites are well known as burning rate catalysts for the combustion of composite solid propellants, used as a source of energy for rocket propulsion.
Eunice Aparecida Campos, Koshun Iha, Luis Cláudio Rezende, Milton Faria Diniz, Rita de Cássia L. Dutra, Wilma Massae Dio Nawa   +5 more
core  

HTPB propellant aging mechanisms and safety characteristics: microscopic structural changes, thermal stability, and self-accelerating decomposition temperature

Case Studies in Thermal Engineering
As hydroxyl-terminated polybutadiene (HTPB) propellant surpasses its intended service life, its performance degrades, necessitating careful disposal to avert potential safety hazards.
Xi-chen Liu, Yi-min Luo, Wen-jiang Li, Fei-yang Xu, Xing-liang Wu, Qiang Li, Da-bin Liu   +6 more
doaj   +1 more source

Ares V: A National Launch Asset for the 21st Century [PDF]

, 2009
NASA is designing the Ares V as the cargo launch vehicle to carry NASA's exploration plans into the 21st century. The Ares V is the heavy-lift component of NASA's dual-launch architecture that will replace the current space shuttle fleet, complete the ...
Creech, Steve, Sumrall, Phil
core   +1 more source

Application of aluminum-based micro-cell composite fuel in HTPB propellant

Journal of Measurement Science and Instrumentation
To study the combustion performance of aluminum-based micro-cell composite fuel aluminum@ammonium perchlorate(Al@AP), in hydroxyl-terminated polybutadiene (HTPB) solid propellant, the Al@AP was added to HTPB solid propellant instead of Al powder and part
ZHOU Zhipeng, LI Miaomiao, ZENG Guowei, WU Xingliang, ZHANG Zhengjin, ZHENG Tingting, XIA Yu, CHEN Jingjing   +7 more
doaj  

Synthesis of multifunctional additives for solid propellants: Structure, properties and mechanism

Defence Technology
To simplify the composite propellant formulation and address the current issue of the single-functionality present in existing additives, the multi-cyano, amine-based polybutadiene (AEHTPB-CN) was prepared based on AEHTPB by adopting appropriate ...
Pingan Zhang, Lina Sun, Jianmin Yuan, Jianru Deng   +3 more
doaj   +1 more source

Biaxial tensile test and meso damage numerical simulation of HTPB propellant. [PDF]

Sci Rep, 2022
Wang Q, Wang G, Wang Z, Qiang H, Wang X, Li S, Zhu Z.   +6 more
europepmc   +1 more source