Sundstrand Corporation

Victor N Benson

Wayne A Flygare

Thomas W Baehler

James R Easter

William J Puskac

An integrated drive generator for an aircraft and a method of making and operating the same result in improved operation of the integrated drive generator, especially during cold start-up. This is accomplished through the use of at least one stop to prevent each of the cylinder blocks in the hydraulic pump and motor assembly of the integrated drive generator from moving away from the port plate more than a predetermined amount which will ensure establishment of hydraulic continuity between the pump and motor without substantial delay during cold start-up of the integrated drive generator.

Cylinder block positive hold-down for cold start-up

A torque transmitting apparatus which includes a tubular drive shaft defining a deaeration chamber integral with the interior of the shaft. Aerated liquid is ducted into one axial end of the deaeration chamber and separated air and residual liquid are ducted from the opposite end of the chamber, generally near the center thereof. Relative rapid rotation of the drive shaft causes radial acceleration of the liquid to effect separation of the more dense liquid from the air under the influence of centrifugal force. The deaerated liquid is ported from the outer periphery of the chamber during rotation of the drive shaft.

Torque transmitting deaerating apparatus

Inefficiencies in electrical starter-generator systems for turbine engines are avoided in a construction including a dynamoelectric machine 16 operable as a motor or as a generator and having a rotor 26, a hydraulic torque converter 70 including an impeller 80 connected to the rotor 26 and a turbine 86. A system 94, 96 is provided for selectively providing hydraulic fluid to the torque converter 70 and a constant speed drive 112, 142, 144 is included. Overrunning clutches 108 and 158 interconnect the turbine 86 and an input for the constant speed drive for allowing the input to overrun the turbine 86 but not the reverse, and for interconnecting the rotor 26 and an output 130 of the constant speed drive for allowing the rotor 26 to overrun the output 130.

Starter-generator for engines

A governor for controlling a hydraulic transmission including a housing, a flyweight assembly rotatable within the housing, an axially movable hydraulic transmission control valve within the housing connected to the flyweight assembly for axial movement in one direction within the housing in response to rotation of the flyweight assembly within the housing, a spring axially biasing the valve for axial movement in the opposite direction within the housing, means for sensing an underspeed condition of the transmission and including hydraulic elements responsive to the underspeed condition in excess of a predetermined condition for axially shifting the valve.

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Rockford, IL, United States of America

Victor N Benson