METHOD FOR GENERATION OF HIGH-SPEED SHOCK WAVE IN IMPACT PIPE

摘要

FIELD: physics.;SUBSTANCE: claimed invention relates to physics of strong shock waves, physics of combustion and explosion and can be used for initiation of shock waves propagating at a speed of more than 11 km/s. Method for generating a high-speed shock wave in an impact tube comprising a high-pressure (HPC) chamber, from one end is equipped with a forechamber with a perforated end facing in direction of wave propagation, and from the other end through the diaphragm connected to the low pressure (LPC) chamber, includes supply of helium and propellant in the HPC, supply and ignition of the explosive mixture in the prechamber, combustion of which provides injection of hot gas jets from antechamber through holes of perforation into HPC cavity, which at a distance of not more than 3 gages from the end of HPC lead to formation of a flat incident shock wave, which destroys the diaphragm with formation of a reflected Chapman-Jouguet detonation wave and passing to LPC shock wave at a speed of more than 11 km/s, pushing gas for which are combustion products of explosive mixture with helium.;EFFECT: technical result consists in the possibility of generation of the shock wave propagating in the low-pressure chamber of the shock tube with the second space (and more) speed, and reducing energy costs for high-speed and shock waves ofmaking best use of energy combustion helium diluted oxygen-hydrogen mixture in high-pressure chamber (HPC).;5 cl, 4 dwg