Object Details
- Manufacturer
- Allison Division, General Motors Corporation
- Physical Description
- Type: Turboprop
- Power: 4,101 kW (5,500 eshp) at 14,000 rpm
- Compressor: 17-stage axial
- Combustor: 8 combustion chambers
- Turbine: 4-stage axial
- Summary
- In 1945, preliminary design began on Allison's first turboprop engines. One was the T40 (Allison Model 500), which consisted of two T38 power sections driving co-axial contrarotating propellers through a reduction gearbox. The objective of this Navy program was to obtain a power plant of increased range for heavy sea planes and fighters, with one unit cut out for cruise economy.
- The T40 was used by the Navy in several experimental aircraft. The first of these was the Convair XP5Y-1, initially flown in 1950, and ultimately canceled because of high costs and aircraft in-flight instability. The T40 was also selected for two Navy competitive prototype VTOL aircraft, the Lockheed XFV-1 Pogo Stick and the Convair XFY-1 Pogo. It was also tested briefly in the Douglas A-2D Skyshark.
- Operational requirements were for the Convair XP5Y-1, North American XAJ-2, and XP4X-2. A close-coupled version, the XT40-A-6, was for the Douglas XA2D-1. Approximately 240 T40s were built.
- Credit Line
- Transferred from the U.S. Navy, Mechanicsburg, Pennsylvania
- Circa 1950
- Inventory Number
- A19660148000
- Restrictions & Rights
- Usage conditions apply
- Type
- PROPULSION-Turbines (Jet)
- Dimensions
- Length 629 cm (247.5 in.), Width 114 cm (45.0 in.), Height 107 cm (42.0 in.)
- Country of Origin
- United States of America
- See more items in
- National Air and Space Museum Collection
- National Air and Space Museum
- Record ID
- nasm_A19660148000
- GUID (Link to Original Record)
- http://n2t.net/ark:/65665/nv937970475-9f40-4347-a3ce-c485d09b0b36
