Patent ID: 8678310
Filing Date: 2014-03-25
Classification: B64D,F02C

Abstract:
1. A ducted ram air turbine assembly, comprising: a duct having an inlet and an outlet; an inlet door adjustable in position to variably control airflow through the inlet: a ram inlet actuator coupled to the inlet door to variably control positions of the inlet door to positions intermediate between open and closed; a ram air turbine disposed inside the duct; a generator driven by the ram air turbine; a generator control unit coupled to the generator; a speed control unit coupled to the generator control unit to receive a generator speed command from the generator control unit, and the speed control unit being coupled to the ram air inlet actuator to produce a ram inlet actuator command signal such that the ram inlet actuator varies a position of the inlet door responsively to the generator speed command and thereby control airflow through the inlet to achieve a desired generator speed.