초록 ▼

An improved high energy impulse rocket includes a motor case containing propellant composed of individual, free flowing granules of a predetermined shape and unbonded to said motor case. The propellant has a high burning rate of 100 milliseconds or less and generates chamber pressures of up to about

An improved high energy impulse rocket includes a motor case containing propellant composed of individual, free flowing granules of a predetermined shape and unbonded to said motor case. The propellant has a high burning rate of 100 milliseconds or less and generates chamber pressures of up to about 50,000 psi. The rocket motor includes a reentry nozzle open at one end and connected to an exit nozzle, the reentry nozzle forming an annulus to contain the propellant and also forming a barrier to prevent ejection of the propellant during burning. Acceleration of the rocket assists in maintaining the propellant within the motor case, which acceleration may be as high as 20,000 g generating a velocity as high as 10,000 fps. Such a rocket offers unique advantages, especially as a device to punch an opening in a wall structure, the details of which are described as well as other details of the improved and relatively inexpensive impulse rocket.

대표청구항 ▼

A high velocity impulse rocket, comprising: an outer rocket motor case, a reentry nozzle within said outer rocket motor case and forming an annulus therebetween, said reentry nozzle terminating in a discharge nozzle for exit of propulsion gases, a head member in said outer rocket motor case and spac

A high velocity impulse rocket, comprising: an outer rocket motor case, a reentry nozzle within said outer rocket motor case and forming an annulus therebetween, said reentry nozzle terminating in a discharge nozzle for exit of propulsion gases, a head member in said outer rocket motor case and spaced from said reentry nozzle, said reentry nozzle being in gas communication with said annulus whereby propulsion gases in said annulus flow in a first direction opposite said discharge nozzle, said head member and reentry nozzle being operative to cause the propulsion gases to flow in a reverse direction from said first direction and towards said discharge nozzle, a propellant in said annulus, means to ignite said propellant, said reentry nozzle and said head member and said propellant cooperating to generate a pressure within said outer rocket motor case after ignition of said propellant of between 5,000 and 50,000 psi, said propellant being composed of individual, free flowing granules of a predetermined shape unbonded to said outer rocket motor case whereby upon ignition of said propellant the gases flow from said annulus in said first direction tending to blow said propellant out of said discharge nozzle and then in said reverse direction to said reentry nozzle and out of said discharge nozzle for accelerating said rocket, and said propellant having a granular flotation velocity which is greater than the gas velocity for maintaining said propellant within said annulus during combustion thereof.