Electro-mechanical control for air breathing starter

• US 3,151,452 A
• Filed: 10/22/1962
• Issued: 10/06/1964
• Est. Priority Date: 10/22/1962
• Status: Expired due to Term

• Current Assignee: Dennen J. Bunger, John H. Ferguson Jr
• Original Assignee: Dennen J. Bunger, John H. Ferguson Jr
• Inventors: Bunger, Dennen J., Ferguson, John H. Jr.
• Application Number:
  US04/232,167
• Time in Patent Office: 715 Days
• US Class Current: 60/787
• CPC Class Codes: F02C 7/26 Starting; Ignition

Claims

1. AN AIR BREATHING STARTING SYSTEM FOR HIGH SPEED TURBINE ENGINES COMPRISED OF:

A HOT GAS GENERATOR INCLUDING AN AIR INLET, A COMPRESSOR ARRANGED TO RECEIVE AIR FROM SAID INLET, A FIRST TURBINE COUPLED TO THE COMPRESSOR, A COMBUSTOR ARRANGED TO RECEIVE COMPRESSED AIR FROM SAID COMPRESSOR, FUEL SUPPLY MEANS AND IGNITING MEANS ARRANGED TO ADMIT FUEL AND TO PROVIDE IGNITION TEMPERATURE IN SAID COMBUSTOR, SAID FUEL SUPPLY MEANS HAVING A FUEL PUMP CONNECTED TO SAID FIRST TURBINE AND CONTROL FUEL VALVE MEANS, A STARTER UNIT HAVING A SECOND TURBINE FREE OF MECHANICAL CONNECTION TO SAID FIRST TURBINE OR SAID COMPRESSOR, A POWER TRANSMISSION TRAIN CONNECTED TO SAID SECOND TURBINE HAVING SPEED REDUCING MEANS, AN OVERRUNNING CLUTCH, AND A CONNECTOR FOR THE TURBINE ENGINE TO BE STARTED, GAS FLOW MEANS ARRANGED TO DIRECT HOT GASES FROM SAID COMBUSTOR THROUGH SAID TURBINES WHEREBY THE TRANSMISSION TRAIN AND THE COMPRESSOR CAN BE POWERED, ELECTRIC MEANS INCLUDING AN ELECTRIC INITIATOR MOTOR CONNECTED TO SAID COMPRESSOR AND CONTROL MEANS HAVING A FIRST CIRCUIT ARRANGED TO PROVIDE ELECTRICITY TO SAID ELECTRIC MOTOR TO ROTATE SAID COMPRESSOR AND TO OPERATE SAID CONTROL FUEL VALVE MEANS OF SAID FUEL SUPPLY MEANS AND SAID IGNITING MEANS TO PROVIDE SELF-SUSTAINING COMBUSTION IN SAID GAS GENERATOR FOR DRIVING SAID SECOND TURBINE, SAID CONTROL MEANS HAVING A PRESSURE RESPONSIVE DEVICE OPERABLE AT A PREDETERMINED PRESSURE IN SAID COMBUSTOR TO OPEN SAID FIRST CIRCUIT, SAID CONTROL MEANS HAVING A SECOND CIRCUIT WHICH IS ARRANGED TO BE CLOSED WHEN SAID PRESSURE RESPONSIVE DEVICE IS OPERATED AND FURTHER ARRANGED TO INTERRUPT OPERATION OF SAID ELECTRIC INITIATOR MOTOR AND TO CONTINUE OPERATION OF SAID CONTROL FUEL VALVE MEANS, AND SAID CONTROL MEANS HAVING SPEED SENSOR MEANS DIRECTLY RESPONSIVE TO THE SPEED OF SAID SECOND TURBINE AND SAID CONTROL MEANS BEING FURTHER ARRANGED TO INTERRUPT OPERATION OF SAID CONTROL FUEL VALVE MEANS OF SAID FUEL SUPPLY MEANS TO SHUT DOWN THE STARTER SYSTEM WHEN SAID SECOND TURBINE ROTATES AT A PREDETERMINED SPEED TO OPERATE SAID SPEED SENSOR MEANS.