Paraffin hydrocarbon fuel for and method of operating pulse jet engines

Claim 1

AN IMPROVED METHOD FOR OPERATING A PULSE JET ENGINE WHICH COMPRISES THE STEPS OF INJECTING FUEL TOGETHER WITH AIR INTO THE FORWARD PORTION OF A PRIMARY COMBUSTION ZONE OF FIXED SIZE, SAID FUEL COMPRISING ESSENTIALLY OF HYDRROCARBON STOCK HAVING NOT MORE THAN 10 PER CENT BY VOLUME ISOPARAFFINS AND CONTAINING AT LEAST 50 PER CENT BY VOLUME NORMAL PARAFFINS BOILING IN THE RANGE OF BETWEEN 150* F. AND 500* F. AND BETWEEN 5 PER CENT AND 20 PER CENT BY VOLUME NORMAL PARAFFINS BOILING IN THE RANGE OF BETWEEN 20* F. AND 150* F.; IGNITING SAID FUEL MIXTURE, WHEREBY A SHOCK WAVE IS PRODUCED BY THE RESULTING EXPLOSION; EXHAUSTING THE RESULTING COMBUSTION GAS THROUGH A REARWARDLY EXTENDING EXHAUST ZONE; AND INTERMITTENTLY REPEATING THE CYCLE OF FUEL-AIR INJECTION, COMBUSTION, AND EXHAUST SO AS TO PRODUCE A TEMPERATURE RISE IN SAID ENGINE RANGING BETWEEN 800* F. AND 4500* F.