V McDonnell F3H Demon je bilo podzvočno letalo ameriške mornarice, ki je temeljilo na letalonosilkah. Naslednik F2H Banshee, Demon je bil preoblikovan z motorjem J71 po hudih težavah z motorjem Westinghouse J40, ki je bil del prvotne zasnove, vendar je bil na koncu opuščen. Čeprav ni imel dovolj moči za nadzvočno zmogljivost, je do leta 1964 dopolnjeval lovce z dnevno svetlobo, kot sta križarja Vought F8U in Grumman F11F Tiger, kot prestreznik z raketami za vse vremenske razmere.
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F3H-2M Demon Walk Around
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Weichao Chen
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The “Lead Sled” that Paved the Way
V McDonnell F3H Demonwas 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 forRaketne, 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)
Vlogo
All-Weather Carrier-based Interceptor
Posadke
1 (Pilot)
First Flight
August 7, 1951 (XF3H-1)
Powerplant
1 × Allison J71-A-2E afterburning turbojet
Thrust
14,000 lbf (62.3 kN) with afterburner
Maximum Speed
716 mph (1,152 km/h) / Mach 0.95
Primary Armament
4 × AIM-7 Sparrow radar-guided missiles
Secondary Armament
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 “greenhouse” canopy that provided excellent visibility for carrier approaches—a design trait McDonnell would carry over into the Phantom.
The “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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