Grumman J2F Duck

Utility amphibian aircraft introduced in 1936

Grumman J2F 6 Duck Candy Clipper N1214N
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The Grumman J2F Duck was initially designed and manufactured by Grumman as a single-engine amphibious biplane before production was taken over by Columbia Aircraft Corporation. The J2F Duck was in service as a utility and search and rescue aircraft with the United States Armed Forces from the mid-1930s until after the Second World War. It also served the Argentine Navy, the armed forces of Colombia, Mexico, and other independent civilian operators. A total number of 584 aircraft were built.

Manufacturer:
Grumman
Country:
United States
Manufactured:
1936 to: 1945
ICAO:
J2F
Price:
Avionics:
Engine:
1x Wright R-1820-54 Cyclone
Piston
Power:
900 horsepower
Max Cruise Speed:
170 knots
315 Km/h
Approach Speed (Vref):
61 knots
Travel range:
680 Nautical Miles
1,259 Kilometers
Fuel Economy:
Service Ceiling:
20,000 feet
Rate of Climb:
1500 feet / minute
7.62metre / second
Take Off Distance:
Landing Distance:
Max Take Off Weight:
Max Landing Weight:
Max Payload:
500 Kg
1,102 lbs
Fuel Tank Capacity:
215 gallon
814 litre
Baggage Volume:
Seats - Economy / General:
2 seats
Seats - Business Class:
Seats - First Class:
Cabin Height:
Cabin Width:
Cabin Length:
Exterior Length:
10.37 metre - 34.02 feet
Tail height:
4.25 metre - 13.94 feet
Fuselage Diameter:
1.5 metre - 4.92 feet
Wing Span / Rotor Diameter:
11.9 metre - 39.04 feet
Wing Tips:
No Winglets

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On April 2, 1936, the J2F-1 initial production version performed its first flight. It was fitted with a single Wright R-1820 Cyclone rated at 750 hp and was then delivered to the United States Navy. The J2F-2 was a United States Marine Corps variant with nose and dorsal gun, and the J2F-3, -4, and -5 varied in their engines.

The J2F-6 is a two-seat Columbia Aircraft built variant with an external length of 10.36 meters, a tail height of 4.25 meters, and a fuselage diameter of 1.5 meters. It has a wingspan of 11.89 meters, a wing area of 38 square meters, and retractable main landing gear with a wheelbase of 5 meters. It has an empty weight of 2,486 kg, a gross weight of 3,493 kg, a maximum payload of 500 kg, and a fuel tank capacity of 215 US gal.

The aircraft is powered by a single Wright R-1820-54 Cyclone engine. It is a nine-cylinder single-row supercharged air-cooled radial piston engine with two overhead valves per cylinder with a sodium-filled exhaust valve, a single-speed General Electric centrifugal-type supercharger, a Stromberg downdraft carburetor with automatic mixture control, a dry-sump with one pressure and one scavenging pump oil system, and an air-cooling system. The engine produces a maximum takeoff thrust of 900 hp and drives a three-bladed constant-speed propeller.

The J2F Duck has a maximum speed of 170 knots, a cruise speed of 135 knots, and a stall speed of 61 knots. The travel range is 680 nautical miles. It can fly up to 20,000 feet and can climb at a rate of 1,500 feet per minute. The aircraft is loaded with a single Browning .30 cal machine gun on a flexible mount in the rear cockpit and 295 kg of bombs or depth charges.

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