User:BilCat/Sandbox/Pratt & Whitney J91
| J91 (JT9) | |
|---|---|
| Type | Turbojet |
| Manufacturer | Pratt & Whitney |
| First run | 1957 |
| Number built | 2 |
| Developed into | Pratt & Whitney J58 |
The Pratt & Whitney J91 (company designation JT9) is a turbojet engine developed by Pratt & Whitney for the North American XB-70 Valkyrie Mach 3 bomber program. Although the General Electric YJ93 was selected for the XB-70, the J91 provided the basis for the later Pratt & Whitney J58 which would power the famous Lockheed SR-71 Blackbird.
Design and development[edit]
Operational history[edit]
Variants[edit]
Data from: The Engines of Pratt & Whitney: A Technical History[1]
- J91-P-1: 24,500 lbf ( kN), 35,000 lbf ( kN) thrust with afterburning
- J91-P-5: 28,700 lbf ( kN), 41,500 lbf ( kN) thrust with afterburning
Specifications (J91-P-1)[edit]
 |
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Data from The Engines of Pratt & Whitney: A Technical History[1]
General characteristics
- Type: Turbojet
- Length: 315.1 in ( cm)
- Diameter: 72.5 in ( cm)
- Dry weight: 8,000 lb ( kg)
Components
- Compressor: Axial compressor
Performance
- Maximum thrust: 35,000 lb thrust ( kN) with afterburning
See also[edit]
Related development
Comparable engines
Related lists
References[edit]
- Notes
- Bibliography
- Connors, Jack (2010). The Engines of Pratt & Whitney: A Technical History. Reston. Virginia: American Institute of Aeronautics and Astronautics. ISBN 978-1-60086-711-8.
- Gunston, Bill (2006). World Encyclopedia of Aero Engines, 5th Edition. Phoenix Mill, Gloucestershire, England, UK: Sutton Publishing Limited. ISBN 0-7509-4479-X.
External links[edit]
Category:Pratt & Whitney aircraft engines Category:Turbojet engines 1940-1949