Results 221 to 230 of about 9,283 (259)
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2009
In the context of nonshock initiation of secondary explosives, electric sparks and lasers represent sources of external power that may stimulate exothermic reaction in energetic materials, and generate enough heat and reaction product gases to ignite a propagating combustion reaction.
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In the context of nonshock initiation of secondary explosives, electric sparks and lasers represent sources of external power that may stimulate exothermic reaction in energetic materials, and generate enough heat and reaction product gases to ignite a propagating combustion reaction.
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Ignition and Flameholding Characteristics of Laser Igniters in Supersonic Airstreams
AIP Conference Proceedings, 2004An investigation on effects of a focused laser pulse for combustion enhancement characteristics was conducted for supersonic airstreams with a transverse hydrogen‐fuel injection. Numerical simulations using a time‐dependant Navier‐Stokes equation with finite‐rate chemistry were conducted to elucidate laser‐induced ignition and mixing enhancement ...
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Development of a laser ignited actuator
33rd Joint Propulsion Conference and Exhibit, 1997EG&G Optoelectronics has an internally funded R&D Program designed to bring a laser ignited pyrotechnic actuator system to the market place. The design incorporates miniature lenses to efficiently focus the laser light output, from a high power EG&G Optoelectronics InGaAs laser diode, into the explosive powder.
D. Benner +9 more
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State of Development of Laser Ignition
MTZ worldwide, 2009A holistic optimization of combustion engines with the aim of conserving resources has to include an improvement of the ignition mechanism as well. In the field of spark-ignition combustion engines the development of laser-induced ignition systems is advanced worldwide. This article of the Bayreuth Engine Research Center (BERC) gives an overview of the
Dieter Brüggeman, Christian Hüttl
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Theoretical investigation of ignition with lasers
Chinese Optics Letters, 2012A fundamental theoretical investigation of laser ignition is reported. Ignition is happened in an explosion bomb which equipped with visualization windows and all aspects of the phenomenon such as plasmas, shock waves, ignition kernels, and propagating flames are observed by high-speed schlieren photography.
Donghua Fang +4 more
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Laser ignition of liquid propellants
Symposium (International) on Combustion, 1991Following previous studies of electrical ignition of liquid propellants in plasma jets, initiation by focused laser beams is studied both by fast cine shadowgraphy and by recording permanent gas release as a measure of decomposition. Unlike military propellants, droplets of aqueous mixtures of nitrate salts of hydroxylamine with a 4-carbon aliphatic ...
F.B. Carleton +3 more
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LASERS AND THE REACTOR IGNITION PROBLEM
Soviet Journal of Quantum Electronics, 1973Some published estimates of the laser energy (W0) required to heat an inertially confined D–T target in a pulsed fusion reactor are summarized. Assuming a thermal efficiency of 1/3 and a laser heating efficiency (target energy/laser pumping energy) of 100%, most of these estimates of W0 range between 10 and 1000 MJ, depending on the various assumptions
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Ignition Delay and Ignition Modes in Zeeman Laser Gyroscope
2022 29th Saint Petersburg International Conference on Integrated Navigation Systems (ICINS), 2022Nikolay Tikhmenev +4 more
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Laser ignition of pressed composites
Combustion, Explosion and Shock Waves, 1983This article presents the results of laser ignition experiments on the model pressed composites 0.45Si + 0.55Pb/sub 3/O/sub 4/ and 0.25A1 + 0.75 KC1O/sub 4/ for various pulse lengths and pressing loads. The GOS-30M neodymium laser operated in the free running mode and the Q-switched mode.
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