Thermopropulsive jet engines of periodic combustion type

Claim 1

A THERMOPROPULSIVE JET ENGINE EXTENDING IN A GENERALLY FORE-AND-AFT DIRECTION, COMPRISING A PERIODIC COMBUSTION CHAMBER OF THE INTERMITTENT IMPULSE TYPE, A FORWARDLY-PROJECTING INTEGRAL TUBULAR EXTENSION OF SAID COMBUSTION CHAMBER FORMING THEREFOR AN AIR INLET OF THE VALVELESS TYPE HAVING A FORWARDLY-FACING FRONT END ORIFICE AND ADAPTED TO BE TRANSVERSED BY PULSES OF COMBUSTION GAS ORIGINATING FROM SAID INTERMITTENT IMPULSE CHAMBER AND TRAVELING UPSTREAM TO ISSUE IN A FORWARD DIRECTION FROM SAID FRONT END ORIFICE, AND A DIVERGENT RAM INTAKE OPEN AT BOTH ENDS TO THE ATMOSPHERE AND EXTENDING TOWARD THE FRONT OF SAID INLET, THE REAR END FO SAID RAM INTAKE BEING LOCATED IN A TRANSVERSE PLANE IN CLOSE PROXIMITY TO SAID ORIFICE, SAID RAM INTAKE COMPRISING A CENTRAL TUBE HAVING A REARWARDLY OPENING END ADJACENT AND OPPOSITE TO SAID ORIFICE, WHEREBY GAS PULSES ISSUING FORWARDLY THEREFROM ARE COLLECTED BY SAID CENTRAL TUBE, AND A NOZZEL OPENING REARWARDLY INTO THE ATMOSPHERE AND CONNECTED WITH SAID CENTRAL TUBE TO BE FED WITH GAS COLLECTED THEREBY, SAID NOZZLE BEING LOCATED IN A TRANSVERSE PLANE IN CLOSE PROXIMITY TO THAT OF SAID REAR END OF SAID RAM INTAKE.