Results 21 to 30 of about 12,623 (301)

Nitramine Double Base Propellants

open access: yesDefence Science Journal, 1996
This review paper broadly covers the studies conducted on nitramine double base (DB) propellants, particularly in the field of formulations, evaluation, catalysis and combustion mechanism . Addition of RDX and HMX in double base matrix shows relatively low burn rates and high paper index values.
M. M. Bhalerao   +3 more
openaire   +1 more source

A MEMS-based solid propellant microthruster array for space and military applications [PDF]

open access: yes, 2015
Since combustion is an easy way to achieve large quantities of energy from a small volume, we developed a MEMS based solid propellant microthruster array for small spacecraft and micro-air-vehicle applications.
Chaalane, A   +9 more
core   +2 more sources

The effect of strain rate on compressive behavior and failure mechanism of CMDB propellant

open access: yesDefence Technology, 2022
The compressive mechanical behavior of composite modified double base (CMDB) propellant was investigated across a wide scope of strain rates ranging from 10−3 s−1 to 4210 s−1 at room temperature, by applying a conventional universal testing machine and a
Heng-ning Zhang   +4 more
doaj   +1 more source

Simulation of gelled propellant doughs isothermal flow through extrusion dies using finite difference method [PDF]

open access: yes, 2017
During the ram extrusion of gelled propellants, the possible flow instabilities can affect the extruded propellant quality. The numerical modelling helps to enhance the geometry of extrusion die, by minimizing the product distortion caused by material ...
Faura Mateu, Félix   +4 more
core   +2 more sources

Studies on Heat Flux Imparted on Thermal Insulation Inside Rocket Motor Containing Double Base Propellant

open access: yesJournal of Aerospace Technology and Management, 2019
Thermal insulation inside the rocket motor experience severe pressure and temperature conditions. Experimental determination of heat flux imparted to thermal insulator inside the rocket motor during the static fi ring is a challenging task.
Rakesh Kumar Kalal   +3 more
doaj   +2 more sources

Propellant Chemistry

open access: yesCHIMIA, 2004
A systematic overview of the different types of solid propellants, their chemical compositions, characteristics and practical applications is given.
Patrick Folly, Peter Mäder
doaj   +1 more source

Microstructural simulations of debonding, nucleation, and crack propagation in an HMX-MDB propellant

open access: yesMaterials & Design, 2021
The modeling of the deformation and failure process of a cyclotetramethylene tetranitramine modified double-base (HMX-MDB) propellant based on the microstructure is of great importance for its manufacturing process and storage lifetime.
Yufei Hou   +3 more
doaj   +1 more source

Novel approach to quantify the chemical stability and shelf life of modified double-base propellants

open access: yesDefence Technology, 2018
Double-base (DB) propellant is vulnerable to auto-catalytic decomposition reactions during storing with the evolution of nitrogen oxides. Modified DB propellant based on energetic nitramines (RDX) can offer enhanced thrust and action time.
Ashraf M.A. Elghafour   +4 more
doaj   +1 more source

Numerical analysis of transient combustion response to acoustic oscillations in axisymmetric rocket motors [PDF]

open access: yes, 1998
A numerical analysis of unsteady motions in solid rocket motors with a nozzle has been conducted. The formulation treats the complete conservation equations for the gas phase and the one-dimensional equations in the radial direction for the condensed
Culick, F. E. C., Roh, T. S.
core   +1 more source

Transient combustion responses of homogeneous propellants to acoustic oscillations in axisymmetric rocket motors [PDF]

open access: yes, 1997
A numerical analysis of unsteady motions in solid rocket motors has been conducted. The formulation considers a 2-D axisymmetric combustion chamber and a choke nozzle, and treats the complete conservation equations accounting for turbulence closure ...
Culick, F. E. C., Roh, T. S.
core   +1 more source

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