Air-breathing solid propellant ducted rocket

Claim 1

A SOLID PROPELLANT, AIR-BREATHING DUCTED ROCKET COMPRISING A FIRST CYLINDRICAL MOTOR CASING; A FIRST ROCKET MOTOR IN REARWARD PORTIONS OF SAID FIRST MOTION CASING, SAID FIRST ROCKET MOTOR BEING DEFINED BY THE WALLS OF SAID FIRST MOTOR CASING AND A COMBUSTIBLE BULKHEAD BETWEEN SAID WALLS, SAID FIRST ROCKET MOTOR CONTAINING A FIRST-BURNING CASE-BONED SOLID PROPELLANT FUEL HAVING DISPERSED THEREIN AN AMOUNT OF SOLID OXIDIZER SUFFICIENT FOR COMPLETE COMBUSTION AND FURTHER HAVING FIRST REARWARD NOZZLE MEANS INCLUDING A UNIFORMLY CONSTRICTED THROAT PORTION; A SECOND ROCKET MOTOR COMPRISING A SECOND MOITOR CASING MOUNTED IN FORWARD PORTIONS OF SAID FIRST MOTOR CASING, SAID SECOND ROCKET MOTOR CONTAINING A SECOND-BURNING CASEBONDED SOLID PROPELLANT FUEL HAVING DISPERSED THEREIN AN AMOUNT OF SOLID OXIDIZER INSUFFICIENT FOR COMPLETE COMBUSTION OF SAID FUEL BUT SUFFICIENT TO SUPPORT CONTINUOUS COMBUSTION IN THE ABSCENCE OF AIR, SAID SECOND MOTOR FURTHER HAVING SECOND REARWARD NOZZLE MEANS INCLUDING A UNIFORMLY CONSTRICTED THROAT PORTION; AND AIR INLET MEANS COMMUNICATING BETWEEN THE ATMOSPHERE AND CENTRAL INTERIOR PORTIONS OF SAID FIRST MOTOR CASING FORWARD OF SAID COMBUSTIBLE BULKHEAD.