METHOD FOR ACCELERATION OF PROPELLED ELEMENT Russian patent published in 2004 - IPC

FIELD: propellant engineering, applicable, in particular, for enhancing the efficiency of propelling devices and jet technology used for dispersal of clouds, descent of mountain snow, etc.

SUBSTANCE: the method consists in the fact that the gas exhausted from the combustion chambers is directed in the form of a reaction jet to the bottom of the propelled element, a reflected gas jet is formed by reversing the direction of the mentioned gas jet on the mentioned bottom, the momentum and the energy of the mentioned gas jets are transferred to the propelled element, and the respective portion of gas flow of the reflected jet is discharged through the open window of the bore. The outlets of the barrel combustion chambers are profiled in the form of Laval nozzles, whose funnels are directed in motion of the propelled element in the bore, and the bottom of the propelled element is profiled in the form of a two-circle Laval nozzle; the process of burning of fuel of each combustion chamber is completed to the moment of flying-out of the propelled element from the bore, or by the moment of beginning of fuel ignition of the (i+1)-th combustion chamber, the angle of inclination of the reaction jets relative to the bore line is selected within 7⁰<α<90⁰. The second consumption of gas flow of the reflected jet exhausted through the open window of the bore is kept permanent accomplishing with its aid the function of a gas-dynamic seal of the barrel, and the gas flow of the reflected jet coming out of the open window of the bore is expanded by the Laval nozzle, and the own jet engine of the propelled element is switched on before or after its flying-out from the bore.

EFFECT: improved the following characteristics: the absolute value of the energy content, useful power, power supply in the stage of acceleration, economical efficiency, reliability, efficiency of power consumption, mass and dimensional characteristics, cost, maneuverability.

10 cl, 3 dwg