Results 271 to 280 of about 2,609,622 (345)

Control the combustion behavior of solid propellants by using core-shell Al-based composites

, 2020
Tailoring the combustion performance of propellant plays an important role in solid propellant design. Herein, we present that interfacial reaction (thermite reaction on Al surface) could be used for tuning the combustion performance of Al-based ...
Wei He, Jie-yao Lyu, Deyun Tang, G. He, Peijin Liu, Q. Yan   +5 more
semanticscholar   +1 more source

Accelerated ageing of composite solid propellants under cyclic temperature variations

Journal of Energetic Materials, 2020
A novel cyclic-thermal method is proposed for accelerated thermo-chemical ageing of composite solid propellants including the diurnal and seasonal variations in temperature, the main environmental factor.
H. Naseem, H. Murthy, P. Ramakrishna
semanticscholar   +1 more source

Ignition and Combustion of Solid Propellants

1961
Abstract : A model for the ignition response of solid propellants is presented, which predicts ignition behavior with respect to pressure and surface heat flux in qualitative agreement with experimental measurements. Surface regression is treated and a steady-state burning model is employed, which assumes equlibrium vaporization at the surface and a ...
Norman W. Ryan, Alva D. Baer, John A. Keller, Rex C. Mitchell   +3 more
openaire   +1 more source

Effect of metal additives on neutralization and characteristics of AP/HTPB solid propellants

, 2020
Conventional ammonium perchlorate (AP) based solid propellant system has been used in rocket boosters and most tactile missiles. But the toxic chloride emissions from the combustion of AP during the rocket launch increase the air pollution by 1%. For the
Uma Vellaisamy, S. Biswas
semanticscholar   +1 more source

SOLID PROPELLANT COMBUSTION INSTABILITY: OSCILLATORY BURNING OF SOLID ROCKET PROPELLANTS

1965
Abstract : Contents: The occurrence of combustion instability in solid propellant rocket motors; The morphology of combustion oscillations; Theories of elemental processes in combustion instability - a literature survey; A detailed discussion of pressure coupling with the surface flame zone; Experimental studies on the nature of the pressure - surface ...
Martin Summerfield, R. H. Woodward Waesche   +1 more
openaire   +1 more source

Solid propellent rheology

Rheologica Acta, 1969
The rheological behaviour of plastic propellent in rocket motor situations is simulated in an experimental technique. In this a differential gas pressure is applied across a plug of propellent in a rigid tube so as to deform it in an approximately telescopic shear fashion. Preliminary results are given and discussed.
H. J. Buswell, J. F. Moloney, G. S. Pearson   +2 more
openaire   +1 more source

Facile and scalable preparation of α-Fe2O3 nanoparticle by high-gravity reactive precipitation method for catalysis of solid propellants combustion

Powder Technology, 2019
A facile and scalable route, using the high-gravity reactive precipitation method which was carried out in a rotating packed bed (RPB) reactor, was proposed to synthesis α-Fe2O3 catalyst which is used to catalyze the decomposition of solid propellants ...
Shao-bo Cao, Xiaomin Han, Liang-liang Zhang, Jie-xin Wang, Yong Luo, Hai-kui Zou, Jianfeng Chen   +6 more
semanticscholar   +1 more source

Lithium-Perchlorate/Polyvinyl-Alcohol-Based Aluminized Solid Propellants with Adjustable Burning Rate

Journal of Propulsion and Power, 2019
Electrically controlled solid propellants (ECSPs) provide a completely new approach to tailor solid propellant burning rates, and an extensive range of low-hazard hydroxylamine nitrate (HAN)-based ...
He Zhicheng, Z. Xia, Huo Jianxin, Li Yang   +3 more
semanticscholar   +1 more source

Mechanism of the organic fluoride effect on the formation of agglomerates and condensed products in the combustion of aluminised solid propellants

Combustion theory and modelling, 2020
The combustion process of Al particles in an aluminised solid propellant containing organic fluoride (SOF) has been investigated in comparison to that of a normal solid propellant (Sn).
Xuyuan Zhou, L. Gong, F. Huang, Rongjie Yang, Jianmin Li   +4 more
semanticscholar   +1 more source

Why does adding a poor thermal conductor increase propagation rate in solid propellants?

Applied Physics Letters, 2019
Solid propellant additives have a long history of modulating burning rate by introducing materials with high thermal diffusivities to better concentrate and transfer heat to nearby areas.
D. Kline, Miles C. Rehwoldt, Haiyang Wang, Noah Eckman, M. Zachariah   +4 more
semanticscholar   +1 more source