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F3H Demon

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F3H Demon

"F3H" redirects here. For the camera, see Nikon F3H.
F3H Demon
An F3H-2N Demon in flight in 1956
Role carrier-based fighter
Manufacturer McDonnell Aircraft Corporation
First flight 7 August 1951
Introduction 7 March 1956
Retired 1964
Status Phased out of service
Primary user United States Navy
Number built 519

The McDonnell F3H Demon was a subsonic swept-wing United States Navy carrier-based jet fighter aircraft. After severe problems with the Westinghouse J40 engine that was ultimately abandoned, the successor to the McDonnell F2H Banshee served starting in 1956 redesigned with the J71 engine.[1] Though it lacked sufficient power for supersonic performance, it complemented daylight dogfighters such as the Vought F8U Crusader and Grumman F11F Tiger as an all-weather, missile-armed interceptor[2] until 1964. It was withdrawn before it could serve in Vietnam when it, and ultimately also the Crusader, was replaced by the extremely successful McDonnell Douglas F-4 Phantom II. McDonnell's Phantom, which was equally capable against ground, fighter and bomber targets, bears a strong family resemblance, as it was conceived as an advanced development of the Demon. The supersonic United States Air Force McDonnell F-101 Voodoo was similar in layout, but was derived from the earlier XF-88 Voodoo, which also influenced the Demon's layout.


Development work began in 1949, using a swept wing from the start rather than adapting a straight-winged design as was done with the Grumman F9F Panther. A competing contract was also awarded for the delta wing Douglas F4D Skyray. The Skyray, with a top speed of 722 mph, would become the Navy's first fighter to fly supersonic in level flight, while the Demon would never reach that level of performance. Departing from its tradition of using two engines, the Demon would be McDonnell's only single-engine carrier-based fighter, adopting under some Navy pressure to use the Westinghouse J40 engine. That engine was being promoted by the Navy for its next generation of aircraft, and was to have thrust of over 11,000 lbf (49 kN)—three times that of the engines in the F2H Banshee. It was the first swept-wing design produced by McDonnell and among the first U.S. aircraft to have missile armament.

The Navy desperately needed a high performance fighter to meet the challenge of the swept-wing MiG-15 encountered over Korea. Production of the F3H-1N was hastily ordered even before the first flight of the XF3H-1 prototype on 7 August 1951 by test pilot Robert Edholm.[1] The first test flights of the operational design did not occur until January 1953, when the Korean War was winding down.

The F3H Demon was originally designed around Navy's ambitious new Westinghouse J40 which was to offer enough power to use just one engine in a number of new aircraft designs. But the engine would ultimately fail to produce the promised thrust or run reliably. The engine was a major disappointment, producing only half of the expected power. Worse, it was temperamental and unreliable. Of 35 F3H-1N aircraft flown with the J40 engine, eight were involved in major accidents. The first production Demons were grounded after the loss of six aircraft and four pilots.[3] Time Magazine called the Navy's grounding of all Westinghouse-powered F3H-1 Demons a "fiasco", with 21 unflyable planes that could be used only for Navy ground training at a loss of $200 million.[4] One high point of the J40 was the 1955 setting of an unofficial time-to-climb record, in a Demon, of 10,000 feet (3,000 m) in 71 seconds.[3] The proposed F3H-1P reconnaissance version was never built. The J40 program was terminated sometime in 1955.

All the aircraft it was to power were either canceled or redesigned to use other engines, notably the J57 and the J71. The F4D Skyray had been designed to accept larger engines in case the J40 did not work out, and was eventually powered by the Pratt & Whitney J57. But no other engine could simply be fit into the old Demons, as both the wings and fuselage would have to be redesigned and enlarged. The best alternative turned out to be the Allison J71 engine which was also used in the Douglas B-66 Destroyer. Subsequent F3Hs with this engine were designated the F3H-2N. In service, the J71 proved problematic, providing insufficient power for an aircraft of the Demon's size. The engine also suffered from frequent flameouts and compressor stalls. The first Demon with a J71 flew in October 1954. Another significant problem was the reliability of the ejection seats: initial versions were found to be unreliable and were eventually replaced with Martin-Baker ejection seats that were becoming the standard Navy seat of choice due to their higher performance at low altitude and better reliability.

Despite the problems, the Navy ordered 239 F3H-2s, and the first were deployed in March 1956. 519 Demons were built up to the end of production in November 1959. It was not the Navy's first all-weather interceptor with radar (the AN/APG-51 air interception set was used first on the F2H-4 Banshee). The F3H-2 Demon had the AN/APG-51A, later upgraded to the 51-B version with a tunable magnetron then on to 51-C with better counter-measures in the receiver.

The F3H-2N's standard armament was four 20 mm (.79 in) Colt Mk 12 cannons. In later years, the upper two cannons were often omitted to save weight. Later models, redesignated F3H-2M, were equipped to fire the Raytheon AAM-N-2 Sparrow and later the Sidewinder air-to-air missiles. Deployed aircraft carried both types of missiles, the Sparrow on the inboard rails and the Sidewinder outboard. Cannons were not used in carrier air defense applications, but they were installed and armed when situations (such as the Cuban Missile Crisis) dictated, and where the aircraft might be deployed against surface targets.

A reconnaissance version, the F3H-2P, was proposed, but never built. It remained the Navy's front-line fighter until 1962, when it was succeeded by the F-4 Phantom II (which was a development of a proposed "Super Demon", a larger and much heavier version of the F3H). Developed during the Korean War to counter the MiG-15, it did not claim any aerial victories with missiles or dogfights, although it flew over Lebanon and Quemoy in 1958.

In 1962, the F3H was redesignated F-3. The F3H-2N became the F-3C, while the F3H-2M became MF-3B and the F3H-2 simply F-3B.

The last Demon-equipped squadron, VF-161 'Chargers', traded their F-3s for F-4 Phantom IIs in September 1964.

Due to excellent visibility from the cockpit, the Demon earned the nickname "The Chair". Demon pilots were known colloquially as "Demon Drivers" and those who worked on the aircraft were known as "Demon Doctors". The unfavorable power-to-weight ratio gave rise to the less flattering nickname "lead sled," sometimes shortened to "sled".[5]


Prototype single-seat clear-weather interceptor fighter. Powered by 6,500 lbf (29 kN) (9,200 lbf (41 kN) with afterburner) Westinghouse XJ40-WE-6 engine. Two built.[6]
Initial production version. Single-seat all-weather fighter version, powered by 7,200 lbf (32 kN) (10,900 lbf (48 kN) with afterburner) J40-WE-22 engine. 58 built.[6]
Proposed reconnaissance version of F3H-1. Never built.[6]
All-weather fighter powered by 9,500 lbf (42 kN) (14,250 lbf (63.4 kN) Allison J71-A-2 engine and equipped to carry AIM-9 Sidewinder air-to-air missiles. 239 built. Redesignated F-3C in 1962.[7]
Derivative of F3H-2N armed with four AIM-7 Sparrow air-to-air missiles. 80 built. Redesignated MF-3B in 1962.[8]
Single-seat strike fighter version, retaining Sidewinder and Sparrow capability of −2N and −2M and adding payload of 6,000 lb (2,730 kg) bombs or rockets. 239 built. Resignated F-3B in 1962.[8]
Proposed photo-reconnaissance version of −2. Unbuilt.[8]
Proposed version with more powerful General Electric J73 engine. Unbuilt.[8]


 United States

Aircraft on display


Specifications (F3H-2)

Data from The American Fighter[8]

General characteristics
  • Crew: 1
  • Length: 59 ft 0 in (17.98 m)
  • Wingspan: 35 ft 4 in (10.76 m)
  • Height: 14 ft 7 in (4.44 m)
  • Wing area: 519 ft² (48.21 m²)
  • Empty weight: 21,133 lb (10,040 kg)
  • Loaded weight: 33,900 lb (15,377 kg)
  • Powerplant: 1 × Allison J71-A-2E turbojet
    • Dry thrust: 9,700 lbf (43.25 kN)
    • Thrust with afterburner: 14,750 lbf (65.77 kN)




  • AN/APG-51A, B, and C radar

See also

Related development
Aircraft of comparable role, configuration and era

Related lists




  • Angelucci, Enzo and Peter M. Bowers. The American Fighter. Sparkford, Somerset, UK: Haynes Publishing Group, 1987. ISBN 0-85429-635-2.
  • Dorr, Robert F. "McDonnell F3H Demon". Aeroplane, Volume 36, No. 3, March 2008, pp. 58–73. London: IBC.
  • Elward, Brad A. and Peter Davies. ISBN 978-1-84176-163-3.
  • Gunston, Bill. Fighters of the Fifties. Cambridge, UK: Patrick Stephens Limited, 1981. ISBN 0-85059-463-4.
  • "Naval Aircraft: Demon". Naval Aviation News, March 1974, pp. 22–23.
  • Spick, Mike. "A Demon Possessed". Air Enthusiast, Forty-three, 1991, pp. 40–49. Stamford, UK: Key Publishing. ISSN 0143-5450.

External links

  • Modeling Madness Demon History
  • Demon Drivers
  • Bob Jellison's F3H Demon
  • Global Security
  • A film clip ]

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