Results 61 to 70 of about 2,083 (236)

Investigations of the mechanical response of dummy HTPB propellant grain under ultrahigh acceleration overload conditions using onboard flight-test measurements

Defence Technology
In this paper, to study the mechanical responses of a solid propellant subjected to ultrahigh acceleration overload during the gun-launch process, specifically designed projectile flight tests with an onboard measurement system were performed.
Yiming Zhang, Ningfei Wang, Weihua Ma, Ran Wang, Long Bai, Yi Wu   +5 more
doaj   +1 more source

Resistive Heating and Thermal Decomposition of an Additively Manufacturable Electrically Conductive Explosive

Propellants, Explosives, Pyrotechnics, Volume 50, Issue 1, January 2025.
Abstract The ability to transmit electrical signals through high explosive charges without using dense metal conductors could enable continuous monitoring of explosive charges with internally embedded sensors. With the sensor materials themselves being energetic, the impact on the intended detonation performance of the charge can be minimized. Embedded
Wesley W. Chapman, Garon M. Young, Gabriel A. Montoya, Terry R. Salyer, Steven F. Son   +4 more
wiley   +1 more source

Numerical study of cook-off temperature and ignition dynamics in high-energetic materials

Academia Engineering
This study presents an approach for predicting temperatures and ignition time during the cook-off process of solid propellants, with a focus on identifying potential hot spots and conduction losses.
Mukhtiar Ahmed, Yang Yang, Binguang Niu, Xiaoxing Liu   +3 more
doaj   +1 more source

Estudo da decomposição térmica de propelente sólido compósito de baixa emissão de fumaça Study of thermal decomposition of a smokelles propellant

Química Nova, 2008
The thermal decomposition of hydroxyl-terminated polybutadiene (HTPB)/ammonium nitrate (AN) based propellants, so called smokeless formulations, and raw materials were investigated by differential scanning calorimetry (DSC) and thermogravimetry (TG). The
Jony Andrade, Antonio Gonçalves Frutuoso, Koshun Iha, José Atílio Fritz Fidel Rocco, Eduardo M. Bezerra, Jivaldo do Rosário Matos, Maria Encarnación Vázquez Suárez-Iha   +6 more
doaj   +1 more source

Storage of solid propellants in a dry environment [PDF]

Storage of solid propellants in either a dry or a vacuum environment causes a significantly greater increase in the propellants' modulus and maximum tensile strength than does ambient storage.
Udlock, D. E.
core   +1 more source

Reduced Reaction Mechanism for Rocket Nozzle Ablation Simulations [PDF]

, 2017
Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/143107/1/6.2017-3682 ...
Boyd, Iain D., Cross, Peter G.
core   +1 more source

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

Alternate propellants for the space shuttle solid rocket booster motors [PDF]

As part of the Shuttle Exhaust Effects Panel (SEEP) program for fiscal year 1973, a limited study was performed to determine the feasibility of minimizing the environmental impact associated with the operation of the solid rocket booster motors (SRBMs ...

core   +1 more source

Exploiting technological synergies for future launch vehicles [PDF]

, 2013
Two launch vehicle concepts based on technologies available today or in a short term future in Western Europe are presented. The design of both launchers has the goal of exploiting synergies with current European programs to limit development and ...
Burkhardt, Holger, David, Emmanuelle, Dumont, Etienne, Johannsson, Magni, Ludwig, Carina, Sippel, Martin   +5 more
core  

Switchable RDX‐Based Rubberized Explosive with Thermally‐Expandable Microspheres

Propellants, Explosives, Pyrotechnics, Volume 49, Issue 10-11, October 2024.
Abstract Improving the safety of explosive materials through the synthesis of insensitive explosives has been studied extensively. However, little work has focused on creating switchable explosives. A switchable explosive is normally insensitive to detonation, and therefore safe to handle and transport, but can be sensitized when needed to create a ...
Joseph R. Lawrence, Metin Örnek, Robert E. Ferguson, Diane N. Collard, Steven F. Son   +4 more
wiley   +1 more source