- XP-56 Black Bullet
name =P-56 Black Bullet
caption =Northrop XP-56 Black Bullet, first aircraft.
first flight =
primary user =
more users =
number built =2
unit cost =
variants with their own articles =
The XP-56 Black Bullet was a unique prototype fighter interceptor built by
Northrop. It was one of the most radical of the experimental aircraftbuilt during World War II. The idea for this single-seat, initially tail-less, airplane originated in 1939 as the Northrop N2Bmodel. It was designed around the Pratt & Whitney liquid-cooledX-1800 engine in a pusher configurationdriving contra-rotating propellers. Design was ordered on June 22, 1940, and a prototypeaircraft was ordered on September 26, 1940. Shortly after work had begun, Pratt & Whitney, however, stopped development of the X-1800. The Pratt & Whitney R-2800engine was substituted, although it was considered not entirely suitable.
In parallel, flight trials of the configuration were conducted on the Model N1M airframe with a wing similar to that planned for the XP-56. Two small Lycoming engines powered this aircraft. These trials confirmed the stability of the radical design and the need for a second prototype, which was ordered on
February 13, 1942.
Taxi tests of the XP-56 began in April 1943 during which a serious yaw problem was discovered that was thought to be caused by the wheel brakes. Manual hydraulic brakes were installed and the aircraft flew on
September 30, 1943 at Muroc Air Basein southern California. After a number of flights, the first XP-56 was destroyed when the tire on the left gear blew out.
A number of changes were made to the second prototype, including re-ballasting to move the center-of-gravity forward and increasing the size of the upper vertical tail, and the plane flew on
March 23, 1944. The pilot had difficulty lifting the nose wheel below 160 mph. This flight lasted less than eight minutes but subsequent flights were longer, and the nose heaviness disappeared when the landing gear was retracted. Only relatively low speeds were attained, however. While urging NACA to investigate the inability to attain designed speeds, further flight tests were made. On the tenth flight the pilot noted extreme tail heaviness, lack of power, and excessive fuel consumption. Flight testing, then, was ceased as too hazardous, and the project was abandoned after a year of inactivity.
pecifications (XP-56 estimates)
plane or copter?=plane
jet or prop?=prop
crew= one, pilot
length main= 27 ft 6 in
length alt= 8.38 m
span main= 42 ft 6 in
span alt= 12.96 m
height main= 11 ft 0 in
height alt= 3.35 m
area main= 306 ft²
area alt= 28.44 m²
empty weight main= 8,700 lb
empty weight alt= 3,955 kg
loaded weight main= 11,350 lb
loaded weight alt= 5,159 kg
max takeoff weight main= 12,145 lb
max takeoff weight alt= 5,520 kg
Pratt & Whitney R-2800-29
type of prop= radial
number of props=1
power main= 2,000 hp
power alt= 1,492 kW
max speed main= 465 mph at 25,000 ft
max speed alt= 749 km/h
range main= 660 miles
range alt= 1,063 km
ceiling main= 33,000 ft
ceiling alt= 10,061 m
climb rate main= 3,125 ft/min at 15,000 ft
climb rate alt= 953 m/min
loading main= 37 lb/ft²
loading alt= 181 kg/m²
power/mass main= 0.18 hp/lb
power/mass alt= 0.96 kW/kg
* 2x 20 mm cannons
* 4x .50 cal (12.7 mm) machine guns
Messerschmitt Me 163
De Havilland DH 108
* Allen, R.S. "The Northrop Story". New York: Orion, 1990. ISBN 0-517-56677-4.
* Andersen, Fred. "Northrop - An Aeronautical History". Century City, CA: Northrop, 1976; Library of Congress nr. 76-22294.
* Green, William. "War Planes of the Second World War, Volume Four: Fighters". London: MacDonald & Co. (Publishers) Ltd., 1961 (Sixth impression 1969). ISBN 0-356-01448-7.
* Green, William and Swanborough, Gordon. "WW2 Aircraft Fact Files: US Army Air Force Fighters, Part 2". London: Macdonald and Jane's Publishers Ltd., 1978. ISBN 0-354-01072-7.
* Maloney, Edward T. "Northrop Flying Wings". Buena Park, CA: Planes Of Fame Publishers, 1975. ISBN 0-915464-00-4.
* Pape, Gerry and Campbell, John M. & Donna. "The Flying Wings of Jack Northrop". Atglen , PA: Schiffer, 1994. ISBN 0-88740-597-5.
* Woolridge, E.T. "Winged Wonders - The Story of the Flying Wings". Washington: Smithsonian Press, 1983. ISBN 0-87474-966-2.
Wikimedia Foundation. 2010.
Look at other dictionaries:
Northrop XP-56 Black Bullet — XP 56 Black Bullet Northrop XP 56 Black Bullet, first aircraft. Role … Wikipedia
Northrop XP-56 Black Bullet — Northrop XP 56 Black Bullet … Wikipédia en Français
Black Bullets — Black Bullets, properly called Jesmona Black Bullets, are a confectionery produced by Maxons of Sheffield. They are popular throughout the north of England, most notably in Newcastle, where it is said they gained a great deal of popularity with… … Wikipedia
Black Talon — is a type of ammunition that was produced by Winchester Ammunition in the 1990s primarily for law enforcement and self defense. This ammunition became known for being one of the earlier types of ammo to exhibit an extreme expansion effect upon… … Wikipedia
Bullet Rogan — Pitcher and Outfielder Born: July 28, 1893(1893 07 28) Oklahoma City, Oklahoma … Wikipedia
Bullet For My Valentine — Le groupe sur scène. Alias BFMV B4MV Bullet avant : 12 Pints of My Girlfriend s Bloo … Wikipédia en Français
Bullet for my valentine — Le groupe sur scène. Alias BFMV B4MV Bullet avant : 12 Pints of My Girlfriend s Bloo … Wikipédia en Français
Bullet (mascot) — Bullet is the name of the mascot of the sports teams at Oklahoma State University Stillwater, a black American quarter horse gelding. Bullet was introduced as an Oklahoma State tradition in 1984 by the late Dr. Eddy Finley as part of the Spirit… … Wikipedia
Bullet for My Valentine — performing at Norway Rock Festival in 2010. Background information Origin … Wikipedia
Bullet (песня) — «Bullet» Исполнитель Hollywood Undead Альбом American Tragedy Дата выпуска 2011 Дата записи 2010 … Википедия