Results 41 to 50 of about 636,210 (204)

Burning Rate Enhancement Analysis of End-Burning Solid Propellant Grains Based on X-Ray Real-Time Radiography

open access: yesInternational Journal of Aerospace Engineering, 2020
Unexpected pressure rise may occur in the end-burning grain solid rocket motor. It is generally believed that this phenomenon is caused by the nonparallel layer combustion of the burning surface, resulting in the increase of burning rate along the ...
Wei Xianggeng   +5 more
doaj   +1 more source

Suppressants for lowering propellant binder burning rate [PDF]

open access: yes, 1972
Addition of boron compound to lower burning rate of solid propellant binder is reported. Chemical reactions involved in propellant binder modification are described.
Thompson, W. W.
core   +1 more source

Influence of high altitude on the burning behaviour of typical combustibles and the related responses of smoke detectors in compartments [PDF]

open access: yesRoyal Society Open Science, 2018
The effect of altitude on typical combustible burning and related smoke detector response signals was investigated by comparison experiments at altitudes of 40 m and 3650 m based on EN54 standard tests.
Ran Tu   +3 more
doaj   +1 more source

Solid propellant rocket motor [PDF]

open access: yes, 1973
The characteristics of a solid propellant rocket engine with a controlled rate of thrust buildup to a desired thrust level are discussed. The engine uses a regressive burning controlled flow solid propellant igniter and a progressive burning main solid ...
Behm, J. W.   +3 more
core   +1 more source

Uncertainties and robustness of the ignition process in type Ia supernovae

open access: yes, 2010
It is widely accepted that the onset of the explosive carbon burning in the core of a CO WD triggers the ignition of a SN Ia. The features of the ignition are among the few free parameters of the SN Ia explosion theory.
Cooper   +43 more
core   +3 more sources

Effect of body material and temperature variation on the performance of the time delay pyrotechnic compositions

open access: yesDefence Technology, 2018
Significance of body material and temperature variation on burning time and burning rate of Si/PbO/Pb3O4/FG and B/BaCrO4/FG pyrotechnic delay compositions were experimentally studied. Brass and stainless steel were used as delay body materials.
Azizullah Khan   +3 more
doaj   +1 more source

Impact of a revised $^{25}$Mg(p,$\gamma$)$^{26}$Al reaction rate on the operation of the Mg-Al cycle [PDF]

open access: yes, 2012
Proton captures on Mg isotopes play an important role in the Mg-Al cycle active in stellar H-burning regions. In particular, low-energy nuclear resonances in the $^{25}$Mg(p,$\gamma$)$^{26}$Al reaction affect the production of radioactive $^{26}$Al$^{gs}$
A. Caciolli   +31 more
core   +3 more sources

The Effects of Thermonuclear Reaction-Rate Variations on 26Al Production in Massive Stars: a Sensitivity Study [PDF]

open access: yes, 2011
We investigate the effects of thermonuclear reaction rate variations on 26Al production in massive stars. The dominant production sites in such events were recently investigated by using stellar model calculations: explosive neon-carbon burning ...
Alessandro Chieffi   +26 more
core   +3 more sources

Determining the Burning Rate of Fine-Grained Propellants in Closed Vessel Tests

open access: yesEnergies, 2022
This paper presents the method of determining the burning rate of fine-grained propellants based on the results of closed vessel tests. It is shown that in the case of fine-grained propellants, the standard methods of determining the burning rate fail ...
Radosław Trębiński   +2 more
doaj   +1 more source

Research on the Combustion Characteristics of Coal Piles and the Fire Risks of Closed Coal Bunkers

open access: yesFire, 2023
Closed coal bunkers emerged as a novel form of coal storage for coal-fired power stations. Nevertheless, heat builds continually in the storage process because of the constant oxidation of coal and combined with the impact of a confined coal bunker ...
Lihong Zhao   +4 more
doaj   +1 more source

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