A gas turbine engine control for regulating bleed from a compressor which has an engine performance map that is compressor stall stable when the ambient inlet air temperature of the engine exceeds a predetermined level and including a compressor bleed valve having a servo controlled pressure diaphragm operated poppet valve therein that is operative to bleed valve from the compressor in accordance with compressor discharge pressure conditions to extend the stall limits of operation of the compressor during engine start and low power or ground idle operati...
In a gas turbine engine the combination of: means including a compressor, a turbine engine air inlet for directing inlet air into said compressor, and a combustion products driven turbine wheel for producing an engine performance map that is stall stable when ambient inlet air temperature to the compressor exceeds a predetermined temperature, compressor bleed valve means for selectively controlling outboard bleed of compressor air in response to compressor discharge pressure conditions and operative to dump air from the compressor for extending its stall...
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