Ejection seat having rocket motor for second stage propulsion

Claim 1

IN AN AIRCRAFT EXCAPE DEVICE TO TYPE COMPRISING A SEAT THAT IS SUBSTANTIALLY SYMMETRICAL ABOUT A VERTICAL PLANE AND IS JETTISONABLY MOUNTED IN AN AIRCRAFT, MEANS FOR PROPELLING THE SEAT CLEAR OF THE AIRCRAFT COMPRISING: (A) AN ELONGATED TUBULAR CASING HAVING CLOSED ENDS AND HAVING LENGTHWISE SPACED APART OUTLETS THROUGH ITS TUBULAR WALL, AT ONE SIDE THEREOF, DEFINING GAS DISCHARGE NOZZLES WHICH HAVE THEIR AXES SUBSTANTIALLY NORMAL TO THE AXIS OF THE CASING AND PARALLEL TO ONE ANOTHER AND WHICH ALL OPEN IN SAME DIRECTION; (B) A PLURALITY OF SOLID FUEL PROPELLANT ELEMENTS IN THE CASING ARRANGED AT SPACED INTERVALS ALONG THE LENGTH OF THE CASING SO AS TO DEFINE RADIALLY OPENING GAS PASSAGES BETWEEN ADJACENT ELEMENTS BY WHICH COMBUSTION GAS CAN FLOW IN A SUBSTANTIALLY STRAIGHT PATH SUBSTANTIALLY RADIAL TO THE CASING AXIS FROM EACH ELEMENT TO THE NOZZLE NEAREST THERETO; (C) IGNITER MEANS IS THE CASING FOR INITIATING COMBUSTION OF THE FUEL ELEMENTS, SAID IGNITER MEANS COMPRISING (1) A BODY OF READILY COMBUSTIBLE MATERIAL AND (2) A DETONATOR AT ONE END OF THE CASING; (D) MEAND ON THE CASING, ACTUATABLE FROM THE EXTEIOR THEREOF, FOR DETONATING THE DETONATOR OF THE IGNITER MEANS; AND (E) MEANS MOUNTING THE CASING ON THE SEAT WITH ITS AXIS NORMAL TO SAID VERTICAL PLANE AND WITH ITS NOZZLES OPENING DOWNWARDLY.