COMPRESSION LOAD CONTROLLER FOR AUXILIARY POWER SECTION

摘要

A gas turbine auxiliary power unit for an aircraft drives an electrical generator 14 and an air compressor. When the generator 14 is used in conjunction with the aircraft generating system, inlet air to the compressor is controlled by variable guide vanes to vary the compressor load on the power unit and thus minimize power unit speed changes and electrical frequency transients. The system is controlled by a microprocessor 30. <IMAGE>