Infobox Aircraft
name=XP-8
caption=Boeing XP-8 (U.S. Air Force photo)
type=Fighter
manufacturer=Boeing
designer=
first flight=January 1928
introduced=Cancelled
retired=
status=
primary user=U.S. Army Air Corps
more users=
produced=
number built=1
unit cost=
developed from=PW-9
variants with their own articles= Boeing F2BThe 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. [Jones 1975, p. 34–35.]
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-1530 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.
pecifications (XP-8)
aircraft specifications
plane or copter?=plane
jet or prop?=prop
ref=Fighters of the United States Air Force[ Dorr and Bishop 1990, p.40.] ]
crew= One
capacity=
length main= 23 ft 5 in
length alt= 7.14 m
span main= 30 ft 1 in
span alt= 9.17 m
height main= 9 ft 0 in
height alt= 2.74 m
area main= 260 ft²
area alt= 24.15 m²
airfoil=
empty weight main= 2,390 lb
empty weight alt= 1,084 kg
loaded weight main=
loaded weight alt=
useful load main=
useful load alt=
max takeoff weight main= 3,421 lb
max takeoff weight alt= 1,552 kg
more general=engine (prop)= Packard 2A-1530
type of prop= liquid cooled piston engine
number of props=1
power main= 600 hp
power alt= 448 kW
power original=
propeller or rotor?=
propellers=
number of propellers per engine=
propeller diameter main=
propeller diameter alt=
max speed main= 153 knots
max speed alt= 176 mph, 283 km/h
max speed more= at 6,000 ft (1,830 m)
cruise speed main= 129 knots
cruise speed alt= 148 mph, 238 km/h
never exceed speed main=
never exceed speed alt=
stall speed main=
stall speed alt=
range main= 283 nm
range alt= 325 mi, 523 km
ferry range main=
ferry range alt=
ferry range more=
ceiling main= 20,950 ft
ceiling alt= 6,386 m
climb rate main= 1,750 ft/min
climb rate alt= 8.89 m/s
loading main=
loading alt=
thrust/weight=
power/mass main=
power/mass alt=
more performance=
guns= one 0.3 in and one 0.5 in machine guns
bombs=
rockets=
missiles=
hardpoints=
hardpoint capacity=
avionics=
ee also
aircontent
related=
similar aircraft=
lists=
* List of military aircraft of the United States
* List of fighter aircraft
References
Notes
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
* [http://home.att.net/~jbaugher1/p8.html Boeing XP-8]
