Grumman XTSF / G-66

Specifications

1st Flight – none built

Crew: 2 (Pilot and radar operator)

Length: 46 ft 4 in (14.12 m)

Wingspan: 59 ft 4 in (18.08 m) (folded span 32 feet (9.8 m))

Height: 16 ft (4.9 m)

Wing area: 500 sq ft (46 m2)

Airfoil: NACA 23015-23012

Empty weight: 17,288 lb (7,842 kg)

Gross weight: 26,171 lb (11,871 kg)

Fuel capacity: 400 US gallons (1,500 l; 330 imp gal)

Powerplant: 2 × Pratt & Whitney R-2800-22W Double Wasp radial engines, 2,400 hp (1,800 kW) each

Propellers: 4-bladed Aeroproducts H-20-156, 13 ft 2 in (4.01 m) diameter

Performance

Maximum speed: 414 mph (666 km/h, 360 kn) at 18,600 feet (5,700 m)

Stall speed: 84 mph (135 km/h, 73 kn)

Range: 975 mi (1,569 km, 847 nmi) internal fuel at 172 miles per hour (277 km/h)

Combat range: 395 mi (636 km, 343 nmi) radius with two 150 US gallons (570 l; 120 imp gal) drop tanks

Service ceiling: 36,500 ft (11,100 m)

Rate of climb: 3,920 ft/min (19.9 m/s)

Wing loading: 47.9 lb/sq ft (234 kg/m2)

Power/mass: 6.5lb/bhp

Armament

Guns: 4 .50-calibre machine guns

Hard points: Two, 1,000 pounds (450 kg) capacity each

Bombs: Internal bomb bay, capacity one Mark 13 torpedo, one 2,000 pounds (910 kg) bomb or naval mine, or up to 4,000 pounds (1,800 kg) smaller bombs, or up to 1,300 pounds (590 kg) depth charges.

Variants

The Grumman XTSF was a proposed twin-engine torpedo scout aircraft, designed by Grumman for the United States Navy towards the end of World War II.

Based on the design of the Grumman F7F Tigercat fighter, but enlarged and with the addition of a bomb bay, the XTSF was deemed too large for carrier operations, and the project was cancelled before any aircraft were built.

Instead, the Navy chose to order the single-engine XTB3F, which became the successful AF Guardian.

 

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