Results 61 to 70 of about 52,081 (256)

Metal Oxides and Dichromate Salts Application as Burning Catalysts for the Modern Aluminized Ammonium Nitrate–Based Solid Propellants

Propellants, Explosives, Pyrotechnics, Volume 50, Issue 6, June 2025.
ABSTRACT This study is devoted to the investigation of combustion characteristics of aluminized solid propellants (SPs) with ammonium nitrate (SP4, 44 wt.% and SP5, 66 wt.%), ammonium perchlorate (5 wt.%), and inert (butyl rubber) and active (polyvinyl tetrazole) binders.
Alexander Gromov, Konstantin Matrosov, Rezo Aliyev, Neel Kamal Gupta   +3 more
wiley   +1 more source

Synthesis of propellant grade HHTPB by hydrogenation of HTPB using Pd-activated charcoal as catalyst

FirePhysChem
To derive more performance from the conventional composite propellant based on hydroxyl-terminated polybutadiene (HTPB) and ammonium perchlorate (AP), it is envisaged to hydrogenate HTPB, which increases the H/C (hydrogen to carbon ratio) of the base ...
Ch. Devi Vara Prasad, P. Kanakaraju, R Vinu, Abhijit P Deshpande   +3 more
doaj   +1 more source

Comparison of burn rate and thermal decomposition of AP as oxidizer and PVC and HTPB as fuel binder based composite solid propellants

Defence Technology, 2019
In the present investigation an effort has been made to understand the thermal decomposition and burn rate characteristics of AP as oxidizer and PVC and HTPB as fuel binder in composite solid propellant.
A. Manash, P. Kumar
doaj   +1 more source

Throttleable Solid Propellants Through Embedded Shape Memory Alloy and Resistance Wires

Propellants, Explosives, Pyrotechnics, Volume 50, Issue 3, March 2025.
Throttling behavior of expanding propellants ABSTRACT Solid propellants are used in propulsion systems for their high performance, feasibility to manufacture, long shelf life, and ease of storage and handling; however, they are limited by the inability to actively control the burning rate.
Derek K. Messer, Cohen T. Nunes, Metin Örnek, Steven F. Son   +3 more
wiley   +1 more source

Active space debris removal by a hybrid propulsion module [PDF]

, 2013
During the last 40 years, the mass of the artificial objects in orbit increased quite steadily at the rate of about 145 metric tons annually, leading to a total tally of approximately 7000 metric tons.
Anselmo, L., Belokonov, I.V., Bernelli, F., Bonnal, C., Branz, F., Chiesa, Sergio, De Luca, L.T., Francesconi, A., Grassi, M., Maggi, F., Pardini, C., Pavarin, D., Tadini, P., Trushlyakov, V., Viola, Nicole   +14 more
core   +1 more source

Segmentation of RDX and TNT in X‐Ray Computed Tomography Reconstructions of Melt‐Cast Explosives

Propellants, Explosives, Pyrotechnics, Volume 50, Issue 2, February 2025.
Flow chart outlining our process for x‐ray CT data segmentation and quantitative anlayses of explosive microstructures. ABSTRACT Three‐dimensional mesoscale characterization of heterogeneous melt‐cast high explosives is challenging because of the difficulty differentiating binder from explosive crystals: two functionally different materials which are ...
Brian M. Rogers, Anthony J. Hardy, Keith R. Coffee, Fowzia Zaka, John D. Sain, Seemeen S. Karimi, Franco J. Gagliardi, Jolyon A. Browne, Joseph W. Tringe   +8 more
wiley   +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

Research on mechanical properties of HTPB propellants

Journal of Physics: Conference Series
Abstract Slat propellants with different sizes and shapes are designed to investigate the strength criteria of HTPB propellants. According to the calculation and simulation results, with the increase of multiple, the designed size slat specimens can achieve equivalent biaxial tensile stress ratios of 1:2, 1:2.5, 1:3, 1:3.5, and 1:4 under
Chang Liu, Zhiqiang Chang, Chao Li, Fujun He, Yake Wu   +4 more
openaire   +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

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