Thermal Considerations of Hydromechanical Constant Speed Drive Design for Supersonic Transport Application

This paper presents an approach for determining fluid temperature levels, types of fluids, source of cooling, and design requirements of hydromechanical constant speed drives for high performance aircraft applications. The compatibility of current CSD design, materials, and present fluids is illustrated by discussion of a typical supersonic aircraft installation and the associated thermal considerations. The significant conclusion is that present hydromechanical CSD design will meet the requirements of the SST application.