Curtiss-Wright XF-87 Blackhawk

XF-87 Blackhawk
Role	Interceptor
Manufacturer	Curtiss-Wright
First flight	5 March 1948
Status	Cancelled 10 October 1948
Primary user	U.S. Air Force
Number built	2
Program cost	$11.3 million USD[1]

The Curtiss-Wright XF-87 Blackhawk (previously designated the XP-87) was a prototype American all-weather jet fighter interceptor and the company's last aircraft project.^[2] Designed as a replacement for the World War II-era propeller-driven P-61 Black Widow night/interceptor aircraft, the XF-87 lost in government procurement competition to the Northrop F-89 Scorpion. The loss of the contract was fatal; the Curtiss-Wright Corporation closed down its aviation division, selling its assets to North American Aviation.

Contents 1 Design and development 2 Operational history 3 Variants 4 Specifications (XF-87)

Design and development

The aircraft started life as a project for an attack aircraft, designated XA-43. When the United States Army Air Forces issued a requirement for a jet-powered all-weather fighter in 1945, the design was reworked for that request.
The XP-87 was a large mid-wing aircraft with four engines paired in underwing pods, with a mid-mounted tailplane and tricycle undercarriage. Two crew members (pilot and radio operator) sat side by side under a single canopy. Armament was to be a nose-mounted, powered turret containing four 20 mm (.79 in) cannon, but this was never fitted to the prototypes.

Operational history

The first flight was on 5 March 1948. Although the top speed was slower than expected, the aircraft was otherwise acceptable, and the newly-formed (in September 1947) United States Air Force placed orders for 57 F-87A fighters and 30 RF-87A reconnaissance planes just over a month later. Since the performance problems were due to lack of power, the four Westinghouse XJ34-WE-7 turbojets of the prototypes were to be replaced by two General Electric J35 jets in production models. One of the two XF-87 prototypes was to be converted to the new powerplants for test purposes.
At this point, the USAF decided that the Northrop F-89 Scorpion was a more promising aircraft. The F-87 contract was cancelled on 10 October 1948, and both prototypes were scrapped.

Variants

XP-97 -

XF-87 -

Specifications (XF-87)

Data from Curtiss Aircraft 1907–1947^[3]

General characteristics

• Crew: two - pilot, radio operator
• Length: 62 ft 10 in (19.15 m)
• Wingspan: 60 ft 0 in (18.28 m)
• Height: 20 ft 0 in (6.09 m)
• Wing area: 600 ft² (55.74 m²)
• Empty weight: 25,930 lb (11,786 kg)
• Max takeoff weight: 49,900 lb (22,682 kg)
• Powerplant: 4× Westinghouse XJ34-WE-7 turbojets, 3,000 lbf (13.4 kN) each

Performance

• Maximum speed: 600 mph (521 knots, 966 km/h)
• Range: 1,000 mi (870 nmi, 1,610 km)
• Service ceiling: 41,000 ft (12,500 m)
• Climb to 35,000 ft (10,700 m): 13.8 min

Armament

• Guns: 4 × 20 mm cannon in nose