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The AlliedSignal TFE731 was largely responsible for the broad-scale introduction of medium-size corporate fanjet aircraft, a trend that began in the early 1970s. The engine's low specific fuel consumption greatly increased the range of corporate jet aircraft. The TFE731 is used on many types of business jets, including Bombardier Learjets, Dassault Falcons, Cessna Citations, Raytheon Hawker 800s, and Israel Aircraft Industries 1125 Astras.

As one of the first development engines for the TFE731-3 engine series, this engine has been rebuilt nearly 200 times for various development and certification testing programs. It has undergone more than 2,000 hours of hard testing in the manufacturer's test cell facilities in Phoenix, Arizona, and on a Falcon 20 jet aircraft. This testing resulted in many improvements to the TFE731 series, including the development of a low-smoke combustion system and enhanced engine controls.

Display Status

This object is on display in Thomas W. Haas We All Fly at the National Air and Space Museum in Washington, DC.

Thomas W. Haas We All Fly

Object Details

Date

1978

Country of Origin

United States of America

Type

PROPULSION-Turbines (Jet)

Manufacturer

Garrett Corporation

Designer

Ivan Speer

Physical Description

Type: Turbofan, two-shaft, geared
Thrust/speed: 16,500 N (3,700 lb) at 29,692 rpm
Fan: Bypass ratio 2.8:1, single-stage,
Compressor: 4-stage low-pressure axial, 1-stage high-pressure centrifugal
Combustor: Annular reverse flow
Turbine: Single-stage high-pressure, 3-stage low-pressure
Weight: 342 kg (754 lb)

Dimensions

Overall: 754lb. (342kg)
Other: 28 3/16in. (71.6cm)
Other (Core length): 49 3/4in. (126.3cm)
Display (Engine on Stand): 1 ft. 11 7/16 in. × 1 ft. 2 3/8 in. × 1 ft. 10 15/16 in., 446.8kg (59.5 × 36.5 × 58.3cm, 985lb.)

Materials

Engine Components - Various alloys of aluminum, steel, etc.
Hoses/Clamps - Rubber
Protective Caps - Plastic

Inventory Number

A19970501000

Credit Line

Gift of AlliedSignal Aerospace

Data Source

National Air and Space Museum

Restrictions & Rights

Usage conditions apply
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