Wright Typhoon XT35-W-1 Turboprop Engine


Display Status:

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Collection Item Summary:

In 1945 Curtiss-Wright received a contract from the Army Air Forces for the XT35 turboprop engine, and Boeing was awarded a study contract for a long-range heavy bomber designated XB-52. Boeing initially proposed a straight-wing bomber powered by six Wright T35s, and then later revised the design to incorporate only four-more powerful-T35 engines.

Curtiss-Wright delivered six XT35-W-1 engines in late 1948. One was test flown in the nose of a Boeing EB-17G bomber and proved more powerful than the bomber's combined four standard reciprocating engines. However, the Air Force dropped the straight-wing, turboprop bomber design and decided instead to produce the now famous, swept-wing B-52 powered by Pratt & Whitney J57 turbojet engines. With no applications found for the XT35, and it never qualified for military application.

Collection Item Long Description:

Data Source

National Air and Space Museum


Credit Line

Transferred from the U.S. Air Force Museum, Wright-Patterson AFB, Ohio.


Length 386 cm (152.0 in.), Diameter 150 cm (59.0 in.)

Country of Origin

United States of America



Physical Description

  • Type: Turboprop
  • Power Rating: 4,451 kW (6,090 eshp) at 7,080 rpm
  • Compressor: 3-stage centrifugal
  • Combustor: Annular
  • Turbine: 3-stage axial
  • Weight: 2,699 kg (5,950 lb)


PROPULSION-Turbines (Jet)

Inventory Number