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P-2 Hawk
The Curtiss P-2 Hawk was a United States biplane fighter of the 1920s, similar to the P-1 Hawk but with a Curtiss V-1400 engine.
The March 1925 order for the P-1 also requested five aircraft with the more powerful V-1400 engine installed. These were completed in January 1926. The first (SN 25-420) was then modified with a supercharger mounted on the right side of the fuselage nose, and whose turbine was driven by engine exhaust; the craft was designated XP-2.
However, the V-1400 engine did not perform up to expectations, with or without the supercharger, and so after a year in service, three of the standard P-2s had their engines replaced with the Curtiss V-1150 and were consequently redesignated as P-1s. The fifth machine (25-243) received a Curtiss V-1550 Conqueror engine and became the XP6.
References
- Lloyd S. Jones, U.S. Fighters (Aero Publishers, Inc., 1975) pp. 14-15 ISBN 0-8168-9200-8
Designation sequence
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