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United States' Grumman J2F Duck amphibian

Photos

  • Grumman J2F-3
  • Grumman J2F-4 Duck
  • Grumman J2F-4 Duck
  • Grumman J2F-4 Duck video

Design

Leroy Grumman designed the Grumman J2F in 1932 to be a replacement for the Loening amphibians in service with the United States Navy.

The J2F had a central hull with floats on the wings to stabilize.

Landing Gear

The J2F had landing gear that could retract into the center float.

Prototype

The XJF-1 prototype first flew on April 24, 1933 / May 1933.

The J2F-1 prototype first flew on June 25, 1935.

Production

Production started in April 1934. Deliveries began at the end of 1934.

The order for the J2F-6 was placed after the attack on Pearl Harbor.

  • Grumman XJF-1: 1
    • Manufacturer: Grumman at Bethpage, New York
  • Grumman JF-1: 27
    • Manufacturer: Grumman at Bethpage, New York
  • Grumman JF-2: 23
    • Manufacturer: Grumman at Bethpage, New York
  • Grumman JF-3: 5
    • Manufacturer: Grumman at Bethpage, New York
  • Grumman J2F-1: 20, 29, 89
    • Manufacturer: Grumman at Bethpage, New York
  • Grumman J2F-2: 21, 30
    • Grumman J2F-2A: 9
    • Manufacturer: Grumman at Bethpage, New York
  • Grumman J2F-3: 20
    • Manufacturer: Grumman at Bethpage, New York
  • Grumman J2F-4: 32
    • Manufacturer: Grumman at Bethpage, New York
  • Grumman J2F-5: 144
    • Manufacturer: Grumman at Bethpage, New York
  • Grumman J2F-6: 330
    • Manufacturer: Columbia Aircraft at Valley Stream
  • Total: 641, 653
    • Production: 1934 - 1945

Variants

  • Grumman XJF-1: Prototype. Pratt & Whitney R-1535-52 engine.
  • Grumman JF-1: Production model.
  • Grumman JF-2: Wright Cyclone engine.
  • Grumman JF-3:
  • Grumman J2F-1: Inter aileron struts removed.
  • Grumman J2F-2:
  • Grumman J2F-2A: United States Marine Corps modified to carry a machine gun and bomb racks. Served with VMS-3 on St. Thomas, Virgin Islands.
  • Grumman J2F-3: Had a Wright R-1820-36 engine.
  • Grumman J2F-4:
  • Grumman J2F-5: Arrived in 1940.
  • Grumman J2F-6: Built by Columbia Aircraft.
  • Grumman OA-12: One J2F-5 was converted to be used by the Coast Guard.

Usage

Argentina and the United States used the J2F Duck.

Argentina

Argentina received 23 JF-2s.

First Deployment

In 1934 the VS-3 was equipped with JF-1s on board the USS Lexington.

Specifications

  Grumman J2F Duck
Type Utility amphibian
Crew 2 - 3
Dimensions  
Span 39'
11.89 m
Length 34'
10.36 m
Height 12' 4"
3.76 m
Armament  
Rear cockpit 1: 0.303" MG
Bombs - under wings 2: 100 lb
2: 45 kg
  Grumman J2F-1 Duck
Engine (Type) Wright R-1820-102 Cyclone
Cylinders Radial 9
HP 750
Propeller blades 3
  Grumman J2F-2 Duck
Engine (Type) Wright R-1820-102 Cyclone
Cylinders Radial 9
HP 750
Propeller blades 3
  Grumman J2F-4 Duck
Type Mapping, Photography, Air-Sea Rescue, Target Towing
Engine (Type) Wright Cyclone
Wright R-1820-30
Cylinders Radial
HP 750
Dimensions  
Span 39'
Length 34'
Height 12' 4"
Weight  
Loaded 6,170 lb
Performance  
Speed 180 mph
Range 780 miles
  Grumman J2F-5 Duck
Type Liaison, Utility
Crew 2, 3
Engine (Type) Wright R-1820-50 Cyclone
Cylinders Radial, Radial 9
Cooling Air
HP 850, 950
Propeller blades 3
Dimensions  
Span 39'
11.89 m
Length 34'
10.36 m
Height 15' 1"
Height - Wheels Retracted 12' 4"
3.76 m
Wing Area 409 sq ft
38 sq m
Weight  
Empty 4,300 lb
1,950 kg
Loaded 6,711 lb
3,044 kg
Performance  
Speed 188 mph
303 kph
Speed at 13,000' / 3,960 m 188 mph
303 kph
Speed - Cruising 150 mph
241 kph
Climb 1,500'/minute
457 m/minute
Climb to 10,000' / 3,050 m 10 minutes 12 seconds
Service ceiling 26,100', 27,000'
7,955 m, 8,230 m
Range 780 miles
1,255 km
Armament None
Cockpit - Rear 1: 7.62 mm / 0.3" MG
Bombs or Depth Charges 650 lb
295 kg
  Grumman J2F-6 Duck
Engine (Type) Wright R-1820-54 Cyclone
HP 900, 1,050
Propeller blades 3
Weight  
Empty 5,445 lb
2,470 kg
Loaded 7,700 lb
3,493 kg
  Grumman JF-1 Duck
Engine (Type) Pratt & Whitney R-1830-62 Twin Wasp
Cylinders Radial 14
HP 700
Propeller blades 3
  Grumman JF-2 Duck
Engine (Type) Wright R-1820-102 Cyclone
Cylinders Radial 9
HP 750
Propeller blades 3
  Grumman JF-3 Duck
Engine (Type) Wright R-1820-102 Cyclone
Cylinders Radial 9
HP 750
Propeller blades 3

Sources:

  1. Aircraft of WWII, Stewart Wilson, 1998
  2. World War II Airplanes Volume 2, Enzo Angelucci, Paolo Matricardi, 1976
  3. Aeronautics Aircraft Spotters' Handbook, Ensign L. C. Guthman, 1943
  4. The Encyclopedia of Weapons of World War II, Chris Bishop, 1998
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