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Lockheed YP-24

From PlaneSpottingWorld, for aviation fans everywhere
Type Two-seat fighter
Ground attack
Manufacturer Detroit Lockheed
Designed by Robert J. Woods
Maiden flight 1931
Status Prototype
Primary user United States Army Air Corps
Number built 1 YP-24
Variants Consolidated Y1P-25
Consolidated XA-11
Consolidated P-30

The Lockheed-Detroit YP-24 was a 1930s prototype two-seat fighter aircraft. An attack version called the A-9 was also proposed. The YP-24 is most remarkable for being the first fighter aircraft to bear the Lockheed name.


In 1930, Detroit Aircraft Corporation undertook a private venture to develop a new fighter ("pursuit aircraft" in contemporary terminology) for US Army Air Corps based on the successful Lockheed Altair transport plane. Designed by Robert J. Woods, the aircraft was completed in 1931 with Detroit Aircraft fabricating the metal fuselage and Lockheed providing the wooden wings, essentially identical to the Altair. Wright Field assigned the prototype the designation XP-900. The aircraft was purchased by USAAC in September 1931 and redesignated YP-24, serial number 32-320. Early testing was sufficiently impressive to generate an order for five Y1P-24 fighters and four Y1A-9 attack aircraft intended to replace the Berliner-Joyce P-16. The A-9 differed in having four forward-firing machine guns, underwing racks for bombs, and a V-1570-27 engine better low-altitude performance.

On 19 October 1931, the sole aircraft crashed when the landing gear lever had broken off. Unfortunately, the Great Depression forced Detroit Aircraft into bankruptcy in October 1931 with Lockheed following suit in June 1932. Although Lockheed was resuscitated by a group of investors only five days after it closed doors, the financial hardships had taken their toll and the P-24/A-9 project was cancelled with no aircraft built beyond the original prototype. However, after Robert Woods left Detroit Aircraft for Consolidated Aircraft, he continued to develop the YP-24/A-9 concept into Consolidated Y1P-25/Y1A-11 which eventually entered service as Consolidated P-30.

Specifications (YP-24)

General characteristics

  • Crew: two
  • Length: 28 ft 9 in (8.8 m)
  • Wingspan: 42 ft 9 in (13.0 m)
  • Height: ft in (m)
  • Wing area: ft² (m²)
  • Empty weight: lb (kg)
  • Max takeoff weight: lb (kg)
  • Powerplant:Curtiss V-1570-23 "Conqueror" liquid-cooled V12 engine, 602 hp (449 kW)
  • Propellers: 3-bladed propeller



  • Guns:
    • 1× 0.50 in (12.7 mm) machine gun firing through the propeller
    • 1× 0.30 in (7.62 mm) machine gun firing through the propeller
    • 1× 0.30 in machine gun in rear cockpit


  • Bowers, Peter M.; Angellucci, E. (1987). The American Fighter. Orion Books. ISBN 0-517-56588-9. 
  • Francillon, R. J. (1987). Lockheed Aircraft Since 1913. Naval Institute Press. ISBN 0-87021-897-2. 
  • Swanborough, G.; Bowers, Peter M. (1989). United States Military Aircraft Since 1909. Smithsonian. ISBN 0-87474-880-1. 

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