This was Garrett's first turboprop engine, and a key first-generation turbine engine that significantly improved performance and utility of general aviation, executive and commercial commuter aircraft. From a technical perspective, it was noteworthy for its short and compact configuration, low installed weight and drag, good specific fuel consumption, aerodynamic efficiency, and performance.

In 1964, the company's YT76 turboprop version of the TSE331 generator set was selected for the North American OV-10A counter insurgency aircraft, and entered Viet Nam War service in 1968.

Garrett simultaneously developed a commercial version of the engine, for which the launch customer was the Mitsubishi MU-2 transport. Over time a number of more powerful TPE331 models were developed for general aviation aircraft such as the Beech B100 King Air, Cessna Conquest 441, Commander Series, Piper Cheyenne IV, and Mitsubishi Solitaire/Marquise. Commuter aircraft applications included the Fairchild Merlin and Metro, BAe Jetstream 31 and Super 31, CASA 212, and Shorts Skyvan 3.

 Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Date Circa 1965 Country of Origin United States of America Type PROPULSION-Turbines (Jet) Manufacturer Garrett Corporation
 Physical Description Type: Turboprop Power Rating: 451 kW (605 eshp) Compressor: 2-stage centrifugal Combustor: Reverse-flow Turbine: 3-stage axial Weight: 161 kg (355 lb) Dimensions Overall: 2 ft. 2 5/8 in. × 1 ft. 9 in. × 3 ft. 6 13/16 in., 355lb. (67.6 × 53.3 × 108.7cm, 161kg)
Other: 6 ft. × 3 ft. × 3 ft. 6 13/16 in. × 1 ft. 9 in. × 2 ft. 2 5/8 in. (182.9 × 91.4 × 108.7 × 53.3 × 67.6cm)
 Materials Aluminum Alloys
Paints
Plastics
Ferrous Alloys
Adhesive Tape
White Metal Plating
 Inventory Number A19761094000 Credit Line Gift of the Garrett Corporation. Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
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