Results 51 to 60 of about 2,083 (236)

Probing the Curing Reaction of HTPB Propellant with Low-Field NMR

Aerospace
Hydroxyl-terminated polybutadiene (HTPB) propellants are widely used in aerospace applications owing to their excellent mechanical performance and storage stability, which are primarily governed by the crosslinked network formed during curing ...
Mengrui Yu, Heng Chang, Jinxiang Liu, Fei Wang, Wenhua Hu, Hua Zhang, Tianshuai Wang, Jiangbo Chen   +7 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

Influence of AP Particle Size on Burning Characteristics of HMX/AP Propellants Supplemented with Fe2O3

Propellants, Explosives, Pyrotechnics, Volume 50, Issue 6, June 2025.
ABSTRACT Nitramine propellants have attracted considerable attention in the domain of solid rockets and gun propulsion because of their energetic and smokeless features. Ammonium perchlorate (AP) is the widely used oxidizer in propellants owing to the excellent burning characteristics.
Makoto Kohga, Koichiro Urano, Hiroki Matsunaga   +2 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

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

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

Recovery of aluminum from composite propellants [PDF]

, 1980
Aluminum was recovered from solid rocket propellant containing a small amount of oxidizer by depolymerizing and dissolving propellant binders (containing functional or hydrolyzable groups in a solution of sodium methoxide) in an alcohol solvent ...
Shaw, G. C.
core   +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

Hybrid propulsion technology program: Phase 1. Volume 3: Thiokol Corporation Space Operations [PDF]

Three candidate hybrid propulsion (HP) concepts were identified, optimized, evaluated, and refined through an iterative process that continually forced improvement to the systems with respect to safety, reliability, cost, and performance criteria. A full
Schuler, A. L., Wiley, D. R.
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