Boeing XP-8

XP-8

Boeing XP-8 (U.S. Air Force photo)
Role	Fighter Type of aircraft
Manufacturer	Boeing
First flight	January 1928
Introduction	Cancelled
Primary user	United States Army Air Corps
Number built	1
Developed from	PW-9
Variants	Boeing F2B

The Boeing XP-8 (Boeing Model 66) was a prototype American biplane fighter of the 1920s, notable for its unusual design incorporating the engine radiator into the lower wing.^[1]

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Design and development

Boeing developed the prototype in 1926 as a private venture, with the goal of winning the Army Air Corps competition announced in 1925. Designated by Boeing as its Model 66, the airframe was basically a PW-9 with an experimental 600 hp Packard 2A-1500 engine. In order to streamline around the engine, the radiator was moved back so that the opening coincided with the front edge of the lower wing, resulting in an unusually narrow profile around the engine.

Testing

Army testing of the aircraft began in January 1928, and it handled well, but performance was lacking, achieving only a maximum speed of 173.2 mph. Even so, the prototype continued in Air Corps service until June 1929, after which it was scrapped. The airframe design lived on in the Navy's Boeing F2B.

Operators

United States

United States Army Air Corps

Specifications (XP-8)

Data from Fighters of the United States Air Force^[2]

General characteristics

Crew: One
Length: 23 ft 5 in (7.14 m)
Wingspan: 30 ft 1 in (9.17 m)
Height: 9 ft 0 in (2.74 m)
Wing area: 260 sq ft (24.15 m²)
Empty weight: 2,390 lb (1,084 kg)
Max takeoff weight: 3,421 lb (1,552 kg)
Powerplant: 1 × Packard 2A-1500 liquid-cooled piston engine, 600 hp (448 kW)

Performance

Maximum speed: 153 kn (176 mph, 283 km/h) at 6,000 ft (1,830 m)
Cruise speed: 129 kn (148 mph, 238 km/h)
Range: 283 nmi (325 mi, 523 km)
Service ceiling: 20,950 ft (6,386 m)
Rate of climb: 1,750 ft/min (8.89 m/s)

Armament

Guns: one 0.3 in and one 0.5 in machine guns

References

Notes

^ Jones 1975, p. 34–35.
^ Dorr and Bishop 1990, p.40.

Bibliography

Boeing Company. Pedigree of Champions: Boeing Since 1916, Third Edition. Seattle, Washington: The Boeing Company, 1969.
Dorr, Robert F. and Donald, David. Fighters of the United States Air Force. London: Temple, 1990. ISBN 0-600-55094-X.
Jones, Lloyd S. U.S. Fighters: Army-Air Force 1925 to 1980s. Fallbrook, California: Aero Publishers, Inc., 1975. ISBN 0-8168-9200-8.

External links

Wikimedia Commons has media related to Boeing XP-8.

Boeing XP-8

USAAS/USAAC/USAAF/USAF fighter designations 1924–1962, and Tri-Service post-1962 systems

1924 sequences
(1924–1962)

Pursuit (1924–1948)	P-1 P-2 P-3 P-4³ Curtiss P-4 Boeing P-4 P-5 P-6 P-7 P-8 P-9 P-10 P-11 P-12 P-13 P-14 P-15 P-16 P-17 P-18 P-19 P-20 P-21 P-22 P-23 P-24 P-25 P-26 P-27 P-28 P-29 P-30 P-31 P-32 P-33 P-34 P-35 P-36 P-37 P-38 P-39 P-39E P-40 P-41 P-42 P-43 P-44 P-45 P-46 P-47 P-48 P-49 P-50 P-51 P-52 P-53 P-54 P-55 P-56 P-57 P-58 P-59³ XP-59 P-59 P-60 P-61 P-62 P-63 P-64 P-65 P-66 P-67 P-68 P-69 P-70 P-71 P-72 P-73² P-74¹ P-75 P-76 P-77 P-78 P-79 P-80 P-81 P-82 P-83 P-84 P-85 P-86 P-87 P-88 P-89 P-90 P-91 P-92
Fighter (1948–1962)	F-38 F-39 F-40 F-47 F-51 F-59 F-61 RF-61C F-63 F-80 F-81 F-82 F-83 F-84 F-84F/J F-84H F-85 F-86 F-86C F-86D/G/K/L F-87 F-88 F-89 F-90 F-91 F-92 F-93 F-94 F-95 F-96 F-97 F-98 F-99 F-100 F-100B F-101 F-102 F-102B F-103 F-104 XF-104 F-104S NF-104A F-105 F-106³ XF-106 F-106 F-107 F-108 F-109² F-110 F-111 F-111B F-111C F-111K AFTI/F-111A EF-111A
Pursuit, Biplace	PB-1 PB-2 PB-3
Fighter, Multiplace	FM-1 FM-2
Non-sequential	F-24 P-322 P-400

Tri-service sequence
(1962–present)

Main sequence	F-1 F-1C/D F-1E/F F-2 F-3 F-4 F-4K/M F-5 G F-6 F-7 F-8 F-9 F-9F–J F-10 F-11 F-12 F-12C² F-13¹ F-14 F-15 F-15E F-15EX F-15J F-15 STOL/MTD F-16 F-16XL NF-16D F-17 F/A-18 F/A-18E/F EA-18G F-19¹ F-20 F-21 F-22 YF-22 FB-22 F-23
Non-sequential	F-35 F-35I X-35 F-117

Covert designations

Related designations

FV-12

¹ Not assigned • ² Unofficial • ³ Assigned to multiple types
See also: "F-19" • 1919-1924 sequence

This page was last edited on 23 November 2022, at 09:01

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