Results 261 to 270 of about 2,609,622 (345)

Design and Synthesis of High-Performance Planar Explosives and Solid Propellants with Tetrazole Moieties.

Organic Letters, 2023
A straightforward synthetic strategy for newly designed nitrogen-rich planar explosives and solid propellants is reported. These materials exhibit high densities (1.69-1.95 g cm-3), high positive enthalpies of formation (approaching 1149.21 kJ mol-1 ...
S. Lal, R. Staples, J. Shreeve
semanticscholar   +1 more source

A constitutive model of the solid propellants considering the interface strength and dewetting

Composites Science and Technology, 2020
The solid propellant as a typical viscoelastic composite, consists of oxidizer particles, fuel particles, and polymeric binders. After experiencing the service conditions under complex stress states and temperature cycles, solid propellants would be ...
Ming Lei, Jiming Cheng, Jinyou Xiao
exaly   +2 more sources

Application of fractional calculus methods to viscoelastic behaviours of solid propellants

Philosophical Transactions Series A, Mathematical, Physical, and Engineering Sciences, 2020
A three-branch viscoelastic model based on fractional derivatives is proposed for the viscoelastic behaviours of solid propellants. The simulation results show a satisfactory agreement with the stress relaxation modulus and complex modulus of solid ...
Huiyu Sun
exaly   +2 more sources

Photo-polymerization for additive manufacturing of composite solid propellants

Acta Astronautica, 2021
The established state-of-the-art for composite solid propellant grain manufacture consists in mix-cast-cure process using hazardous chemicals and specific molds for propellant forming.
Simone Garino, Paola Antonaci, D. Pastrone, M. Sangermano, F. Maggi   +4 more
semanticscholar   +1 more source

Research Progress of Burning Rate Inhibitors in Solid Heterogeneous Propellants

Propellants, Explosives, Pyrotechnics
The advancement of solid rocket technology has increased demand for high‐performing propellants, particularly in the aerospace industry. Solid propellants are an essential component of rocket engines, and their stable combustion and adjustable burning ...
Dingning Chen, Haojie Yu
exaly   +2 more sources

Stability of Solid Propellant Combustion

Physical Review Letters, 1994
The stability of a combustion wave is one of the most important problems in combustion theory. The solution of the problem can be essentially simplified if the characteristic scales of the processes governing the combustion are small in comparison with the characteristic dimensions of the problem.
, Bychkov, , Liberman
openaire   +2 more sources

Detonability of Solid Composite Propellants

ARS Journal, 1961
The thin film pla t inum resistance thermometer (heat flux gage) has been successfully applied to measurement of heat fluxes from initiators for solid propellants. Hea t fluxes measured were as high as 1000 Btu/ft-sec from hot, particleladen reaction products of pyrotechnic igniters.
Andersen, W. H., Chaiken, R. F.
openaire   +2 more sources

INVESTIGATION OF SOLID PROPELLANT MICROTHRUSTERS

International Journal of Computational Engineering Science, 2003
A novel micropropulsion system is described for high-accuracy station keeping, attitude control and speed adjusting of microspacecraft. The proposed solid propellant microthruster is composed of two layers bonded together. One layer is a silicon layer, which contains a microchamber, a micronozzle and a 30-micron slot.
K. L. Zhang, S. K. Chou, Simon S. Ang, X. S. Tang, J. S. Phang   +4 more
openaire   +1 more source

Adiabatic pyrolysis of solid propellants

35th Aerospace Sciences Meeting and Exhibit, 1997
Several one-step, irreversible, zero-order pyrolysis models (Arrhcnius, KTSS, and Merzhanov Dubovitskii high activation energy pyrolysis), commonly used to study adiabatic burning of energetic materials with arbitrary pressure and initial temperature, are revisited.
DE LUCA, LUIGI, VERRI, MAURIZIO, COZZI, FABIO, COLOMBO, GIOVANNI, E. Volpe   +4 more
openaire   +1 more source

Solid-propellant erosive burning

Journal of Propulsion and Power, 1987
A modeling approach based on experimental verification for the erosive burning of ammonium perchlorate composite propellants is proposed. It retains the idea that erosive burning is due to the penetration of the flow turbulence within the flame height and to the consequent enhancement of the transport coefficients and of the heat flux to the surface ...
J. GODON, J. DUTERQUE, G. LENGELLE
openaire   +1 more source