Lla McDonnell F3H Demon était un avion de chasse à réaction subsonique à voilure balayée par la Marine américaine. Successeur du F2H Banshee, le Demon a été redessiné avec le moteur J71 après de graves problèmes avec le moteur Westinghouse J40 qui faisait partie de la conception originale mais finalement abandonné. Bien qu’il manquait de puissance suffisante pour les performances supersoniques, il complétait les chasseurs de chiens de jour tels que le Vought F8U Crusader et grumman F11F Tiger comme un intercepteur tous temps, armé de missiles jusqu’en 1964.
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F3H-2M Demon Walk Around
Photographe
Mike Fortin
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Inconnu
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58
McDonnell F3H-2N (F-3B) Demon Walk Around
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Weichao Chen
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Voir aussi :
Lla « Lead Sled » that Paved the Way
Lla McDonnell F3H Démonwas a transitionary swept-wing carrier-based jet fighter that served as the predecessor to the legendary F-4 Phantom II. While the early models were plagued by a disastrously underpowered Westinghouse engine, theF3H-2Mvariant (later designated F-3C) fixed many of these issues with the Allison J71. The « M » stood forMissile, as this specific version was optimized to carry the first radar-guided air-to-air missiles, changing naval aerial combat from dogfighting to « beyond visual range » interceptions.
Attribute
Technical Specification (F3H-2M)
Rôle
All-Weather Carrier-based Interceptor
Crew
1 (Pilot)
First Flight
August 7, 1951 (XF3H-1)
Groupe motopropulseur
1 × Allison J71-A-2E afterburning turbojet
Thrust
14,000 lbf (62.3 kN) with afterburner
Vitesse maximale
716 mph (1,152 km/h) / Mach 0.95
Primary Armament
4 × AIM-7 Sparrow radar-guided missiles
Armement secondaire
4 × 20mm Colt Mk 12 cannons
Engineering the Missile Age
The Sparrow Missile Platform:The F3H-2M was the first operational fighter integrated with theAIM-7 Sparrow. This required a sophisticated radar system capable of « illuminating » the target for the missile’s seeker head to follow.
Large Wing Area:To maintain maneuverability at high altitudes and safe landing speeds on carriers, the Demon featured a very large wing area (over 500 sq ft). This gave it excellent « lift, » but the resulting drag limited it to subsonic speeds in level flight.
High-Cockpit Visibility:The pilot sat quite high in the fuselage with a « Serre » canopy that provided excellent visibility for carrier approaches—a design trait McDonnell would carry over into the Phantom.
Lla « Beaver Tail »:The rear fuselage tapered into a flat, wide fairing known as a « beaver tail, » which housed the arrestor hook and helped manage the aerodynamics of the afterburning exhaust.
A Difficult Birth and a Lasting Legacy
The Engine Crisis:The early F3H-1 used the Westinghouse J40 engine, which was so unreliable and underpowered that several aircraft were lost in accidents, and the Navy eventually grounded the entire fleet until the Allison J71 could be fitted.
All-Weather Capability:Despite its early troubles, the Demon was a true all-weather fighter. Its radar and automated fire control systems allowed it to operate effectively in the dark and through heavy cloud cover, a necessity for protecting the fleet.
Blueprint for the Phantom:You can see the « family resemblance » between the Demon and the laterF-4 Phantom II. McDonnell used the lessons learned from the Demon’s radar integration and airframe layout to build the world-beating F-4.
Preservation:Several Demons are preserved in the United States, most notably at theNational Museum of Naval Aviationin Pensacola, Florida, and theIntrepid Sea, Air & Space Museumin New York.
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