Grumman XTSF / G-66

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.

Grumman offered the XTSF for sale as the G.66 Chinese Cat to a few potential buyers, none were taken.

Specifications

Crew

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 x .50-calibre machine guns

Hardpoints

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.

 

 

 

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