Gas turbine engines

Claim 1

IN A BY-PASS GAS TURBINE JET REACTION ENGINE HAVING AN ENGINE CASING HOUSING COMPRESSOR MEANS, COMBUSTION EQUIPMENT, TURBINE MEANS ARRANGED IN SERIES AND A JET PIPE FOR THE FLOW OF TURBINE EXHAUST GASES, THE IMPROVEMENT COMPRISING: A BY-PASS DUCT HAVING ITS UPSTREAM END COMMUNICATING WITH THE COMPRESSOR MEANS FOR RECEIVING A PORTION OF AIR COMPRESSED THEREBY, SAID BY-PASS DUCT EXTENDING PAST THE COMBUSTION EQUIPMENT AND TURBINE MEANS AND TERMINATING ADJACENT THE DOWNSTREAM END OF SAID JET PIPE; A PLURALITY OF MIXER CHUTES EACH HAVING AN UPSTREAM END COMMUNICATING WITH THE BY-PASS DUCT AND A DOWNSTREAM END EXTENDING INTO THE JET PIPE DOWNSTREAM OF THE TURBINE MEANS; REHEAT FUEL INJECTION MEANS EXTENDING INTO THE FLOW OF TURBINE EXHAUST GASES UPSTREAM OF SAID MIXER CHUTES AND IMMEDIATELY DOWNSTREAM OF SAID EACH OF SAID CHUTES AND SELECTIVELY OPERABLE TO A FIRST POSITION FOR ALLOWING BY-PASS AIR TO FLOW THROUGH SAID BYPASS DUCT AND BE DISCHARGED FROM THE DOWNSTREAM END THEREOF ADJACENT THE DOWNSTREAM END OF SAID JET PIPE AND TO A SECOND POSITION FOR ALLOWING BY-PASS AIR TO PASS INTO SAID CHUTES AND BE MIXED WITH TURBINE EXHAUST GASES WHILE PREVENTING FLOW THROUGH SAID BY-PASS DUCT TO THE DOWNSTREAM END THEREOF, SAID MIXER CHUTES BEING POSITIONED IN SAID JET PIPE TO ACT AS FLAME STABILIZING MEANS FOR REHEAT COMBUSTION WHEN SAID VALVE MEANS IS IN SAID FIRST POSITION.