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General characteristics
Crew: 1
Length: 33 ft 7 in (10.24 m)
Wingspan: 42 ft 10 in (13.06 m)
Height: 13 ft 1 in (3.99 m)
Wing area: 334 ft² (31 m²)
Airfoil: NACA 23015.6 mod root; NACA 23009 tip
Empty weight: 9,238 lb (4,190 kg)
Loaded weight: 12,598 lb (5,714 kg)
Max. takeoff weight: 15,415 lb (6,990 kg)
*Fuel capacity: 250 gal (946 L) internal; up to 3 × 150 gal (568 L) external drop tanks
Zero-lift drag coefficient: 0.0211
Drag area: 7.05 ft² (0.65 m²)
Aspect ratio: 5.5
Powerplant: 1 × Pratt & Whitney R-2800-10W "Double Wasp" two-row radial engine with a two-speed two-stage supercharger, 2,200 hp (1,491 kW)
Propellers: 3-blade Hamilton Standard
Propeller diameter: 13 ft 1 in (4.0 m)

Performance
Maximum speed: 330 kn (391 mph, 629 km/h)
Stall speed: 73 kn (84 mph, 135 km/h)
Combat radius: 820 nmi (945 mi, 1,520 km)
Ferry range: 1,330 nmi (1,530 mi, 2,460 km)
Service ceiling: 37,300 ft (11,370 m)
Rate of climb: 3,500 ft/min (17.8 m/s)
Wing loading: 37.7 lb/ft² (184 kg/m²)
Power/mass: 0.16 hp/lb (260 W/kg)
Time-to-altitude: 7.7 min to 20,000 ft (6,100 m)
Lift-to-drag ratio: 12.2
Takeoff roll: 799 ft (244 m)

Armament
Guns: 6× 0.50 in (12.7 mm) M2 Browning machine guns, with 400 rounds per gun, (All F6F-3, and most F6F-5) or
2 × 0.79 in (20 mm) AN/M2 cannon, with 225 rounds per gun and 4 × 0.50 in (12.7 mm) Browning machine guns with 400 rounds per gun
Rockets: 6 × 5 in (127 mm) HVARs or
2 × 11¾ in (298 mm) Tiny Tim unguided rockets
Bombs: up to 4,000 lb (1,814 kg) full load, including:
Bombs or Torpedoes: (Fuselage mounted on centreline rack)
1 × 2,000 lb (907 kg) bomb or
1 × Mk.13-3 torpedo;
Underwing bombs: (F6F-5 had two additional weapons racks either side of fuselage on wing centre-section)
2 × 1,000 lb (450 kg) or
4 × 500 lb (227 kg)
8 × 250 lb (110 kg)

The highly successful follow-on to the Wildcat. Built specifically to counter the Japanese Zero, the Hellcat filled the bill, and earned the nickname "ace maker." Its docile handling characteristics, especially important for a carrier-based plane to be used by a large number of reasonably well-trained pilots, made it the Navy's first choice fighter to deploy with the Essex-class carriers.

In the critical years 1943 and 1944, the Hellcat ruled the skies of the Western Pacific.
Eugene Valencia, one of the Navy's top aces, quipped. "I love this airplane so much, that if it could cook, I'd marry it."

Development
Although the F6F had been on the drawing boards at Grumman, even before Pearl Harbor, the advent of the war gave great impetus to the development of the replacement for the Wildcat. From the start it was a much bigger airplane. Leroy Grumman, and his two top engineers, Leon Swirbul and Bill Schwendler, laid out a plane with higher performance, more fuel & ammunition, and huge wings. The wings extended over 334 square feet; the average was less than 250 sq. ft.. The wings folded back and pivoted ingeniously, so that they folded up next to and alongside the fuselage.

The first prototype, the XF6F-1, was under development when the war started. Based on combat experience against the Zero and the intact A6M captured in the Aleutians, it was clear that speed and better climb would be needed from the Hellcat. Test pilot Robert L. Hall first flew the XF6F-1 in late June, 1942. Powered by a Wright Cyclone R-2600-16 engine (1,600 horsepower), the aircraft didn't have the needed performance. Grumman proposed the Pratt & Whitney 2800 Double Wasp (2,000 horsepower). Equipped with the P&W 2800, the original prototype airframe became the XF6F-3. A month later, Bob Hall flew the new configuration. Despite a crash of the XF6F-3 in August, the Navy placed an order.

Grumman had to build a new facility, Plant Number 3, to produce the Hellcat. Obtaining the structural steel for the buildings was a challenge, met in part by the purchase of scrap from the Second Avenue El. Even before Plant Number 3 was finished, Hellcats began rolling off the production lines. Another Grumman test pilot, Selden "Connie" Converse took up a production F6F-3 for the first time on October 3, 1942. Grumman's Hellcat output picked up quickly: 12 planes in the last quarter of 1942, 128 in the first quarter of 1943, and then 130 in the month of April, 1943. Eventually they would be churning out 500 per month. The company built over 12,000 in three years.

During "The War," Grumman was an outstanding example of American productivity, employing 20,000 workers, few of whom had ever worked in the aircraft industry before; many of them were women. Bethpage was a happy place; there were no strikes, work stoppages, nor unions. Grumman took care of its employees with daycare centers for working mothers, social events for all, Christmas turkeys, and the famous "Green Car Service" to help employees with dead batteries and other minor problems.

F6F Performance
Especially with the delays in the F4U program, the US Navy needed a superior carrier-based fighter in 1942-43. The Hellcat filled the bill. On average, it flew 55 MPH faster than the Zero; at about 20,000 feet it was 70 MPH faster. At altitudes in excess of 10,000 feet, it had a comparable rate of climb. At all altitudes, due to its heavier weight and greater power, it could out-dive the A6M. (This was generally true of American fighters; in a tough spot, the pilots could nose over, firewall the throttle, and zoom down.)

The 'dash Five' closely resembled the 'dash Three.' It had some extra armor, stronger main gear legs, spring tabs on the ailerons (for better maneuverability), and most of them had water-injection engines (the R-2800-10W). Both versions had 250 gallons capacity in internal tanks and a 150 gallon belly drop-tank.

Its armament, power, and range gave the Hellcat great versatility. The basic weaponry consisted of six wing-mounted .50 caliber machine guns, each with 400 rounds of ammunition. Many, including all F6F-5N and F6F-5P variants substituted a 20mm cannon with 200 rounds for the innermost machine gun in each wing. The Hellcat could carry a up two 1,000 pound bombs. Its most destructive weapons were six 5-inch HVAR's (High Velocity Aircraft Rockets), which the author Barrett Tillman described as "equal to a destroyer's broadside."
This variety of weapons and equipment permitted the Hellcat to carry out a broad range of missions: fighter versus fighter combat, strike plane escort, combat air patrol, long range search, ground support over invasion beaches, night fighting (see F6F-5N), and photo recon (see F6F-5P).