Dual afterburner manifold proportioning control

Claim 1

A FLOW DIVIDER CONTROL FOR USE WITH A GAS TURBINE ENGINE HAVING A COMPRESSOR, A SUPPLY OF HIGH PRESSURE METERED FUEL, AND FIRST AND SECOND AFTERBURNER MANIFOLDS COMPRISING: A CONDUIT ARRANGEMENT HAVING AN OPENING INTO WHICH METERED FUEL IS INTRODUCED AND FIRST AND SECOND BRANCHES ADAPTED TO DELIVER COMPLEMENTARY PORTIONS OF SAID METERED FUEL TO SAID FIRST AND SECOND MANIFOLDS RESPECTIVELY; FIRST AND SECOND VALVE MEANS DISPOSED IN SAID FIRST AND SECOND BRANCHES RESPECTIVELY TO CONTROL FLOW DIVISION; MEANS RESPONSIVE TO A PRESSURE GENERATED BY THE ENGINE COMPRESSOR CONNECTED TO SAID FIRST VALVE MEANS TO CONTROL THE POSITION THEREOF SUCH THAT THE PRESSURE DROP THEREACROSS IS A COMBINED FUNCTION OF THE PORTION OF METERED FLOW DELIVERED TO SAID FIRST MANIFOLD AND SAID COMPRESSOR GENERATED PRESSURE; AND SENSING MEANS RESPONSIVE TO A PRESSURE DROP ACROSS SAID FIRST VALVE MEANS OPERATIVE TO MAINTAIN SAID SECOND VALVE MEANS IN A CLOSED POSITION WHEN SAID PRESSURE DROP IS LESS THAN A PREDETERMINED QUANTITY; SAID SENSING MEANS FURTHER OPERATIVE TO REGULATE SAID SECOND VALVE MEANS IN AN OPEN POSITION WHEN SAID PRESSURE DROP SUBSTANTIALLY EQUALS THE PREDETERMINED QUANTITY AND PERMIT VARYING PORTIONS OF SAID METERED FUEL TO FLOW THROUGH SAID SECOND BRANCH SUFFICIENT TO MAINTAIN SAID PRESSURE DROP ACROSS SAID FIRST VALVE MEANS SUBSTANTIALLY CONSTANT WHILE SAID PRESSURE IS CONTROLLING THE POSITION OF SAID FIRST VALVE.