An Aerodynamic Torque Converter for High Speed Coupling of an Auxiliary Power Unit 751118

An Aerodynamic Torque Converter (ATC) which operates as a high speed coupling device between a single shaft auxiliary power unit (APU) and the accessory loads has been designed and built, and is in the latter stages of its testing program. The ATC operates at APU speeds and temperatures while maintaining favorable power-to-weight and power-to-volume ratios.