Consolidated Y1P-25


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Consolidated Y1P-25

The P-25 was built by Consolidated, a manufacturer founded in Buffalo, New York, in 1923 as successor to the Dayton-Wright Airplane Company. The P-25 was externally almost a replica of the Lockheed P-24 but slightly larger and heavier. One of Robert Wood's design engineers moved from Lockheed to Consolidated and retained the goal of creating a fast, two-seat tandem fighter to replace the Berliner-Joyce P-16. The US Army Air Corps in 1932 was sufficiently interested to order two Consolidated Y1P-25 airframes, although the second was soon given the attack function and redesignated Y1A-11. A cantilever low-wing monoplane of all-metal construction (unlike its partly wood Lockheed forbear), the Y1P-25 had retractable landing gear, the familiar Curtiss Conqueror engine, and a rearward-facing machine-gunner. The engine was supercharged, making possible a top speed of 398km/h at 4500m.

First flown in 1932, the Y1P-25 crashed on 13 January 1933 and was written off. The Y1A-11 was also lost that same month. But in its short test life the Y1P-25 had shown sufficient promise for the USAAC to seek further development. Indeed, by May 1932 the service had decided to explore the basic design further. The Y1P-27 and Y1P-28 variants, to be powered by Pratt & Whitney Wasp engines of different marks, were seriously contemplated but never built. Four Conqueror-powered service-test machines were completed as P-30s and later machines were redesignated PB-2 (for pursuit, biplace). The basic design, after being allocated several designations, became the principal USAAC two-seat fighter between world wars.

  Take-off weight2318 kg5110 lb
  Empty weight1763 kg3887 lb
  Wingspan13.36 m44 ft 10 in
  Length8.94 m29 ft 4 in
  Height2.62 m9 ft 7 in
  Wing area27.87 m2299.99 sq ft
  Max. speed398 km/h247 mph
  Cruise speed290 km/h180 mph
  Ceiling8230 m27000 ft
  Range933 km580 miles
 ARMAMENT2 x 7.62mm fixed machine-guns + 1 x 7.62mm in the rear

Klaatu83, e-mail, 23.09.2012 16:07

The single-engine,two-seat fighter concept became popular between the wars due to the success of the Bristol F2B during World War I. Many aviation pundits of the time considered it a good idea. However, by 1939 the concept had lost much of it's appeal because, despite the supposed advantage of the rear gunner, a good two-seater simply couldn't equal the performance of a good single-seater. It was just as well that the concept was discontinued because, generally speaking, single-engine two-seaters did not fare particularly well in air-to-air combat during World War II.


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