Grumman J2F Duck
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Grumman J2F Duck
Grumman J2F Duck
L'histoire du canard de Grumman sur Wikipdia; english :
The [Vous devez être inscrit et connecté pour voir ce lien] J2F Duck was an [Vous devez être inscrit et connecté pour voir ce lien] single-engine [Vous devez être inscrit et connecté pour voir ce lien].
Development
The G-15 was an improved version of the earlier [Vous devez être inscrit et connecté pour voir ce lien], differing by having a longer float.
It was ordered by the [Vous devez être inscrit et connecté pour voir ce lien] as the J2F Duck.
The J2F-1 Duck first flew on 2 April 1936 powered by a 750 hp (559 kW) [Vous devez être inscrit et connecté pour voir ce lien] Cyclone, and was delivered to the US Navy on the same day.
The J2F-2 had a Wright Cyclone engine but boosted to 790 hp (589 kW). 20 J2F-3 variants were built in 1939 for use as executive transports for the Navy with plush interiors.
Pressure of work following the United States entry into the [Vous devez être inscrit et connecté pour voir ce lien] in 1941 production of the J2F Duck was transferred to the [Vous devez être inscrit et connecté pour voir ce lien] of [Vous devez être inscrit et connecté pour voir ce lien].
They produced 330 aircraft for the Navy and US Coast Guard.
Several surplus Navy Ducks were converted for use by the [Vous devez être inscrit et connecté pour voir ce lien] in the [Vous devez être inscrit et connecté pour voir ce lien] role as the OA-12 in 1948.
L'histoire du canard de Grumman sur Wikipdia; english :
The [Vous devez être inscrit et connecté pour voir ce lien] J2F Duck was an [Vous devez être inscrit et connecté pour voir ce lien] single-engine [Vous devez être inscrit et connecté pour voir ce lien].
Development
The G-15 was an improved version of the earlier [Vous devez être inscrit et connecté pour voir ce lien], differing by having a longer float.
It was ordered by the [Vous devez être inscrit et connecté pour voir ce lien] as the J2F Duck.
The J2F-1 Duck first flew on 2 April 1936 powered by a 750 hp (559 kW) [Vous devez être inscrit et connecté pour voir ce lien] Cyclone, and was delivered to the US Navy on the same day.
The J2F-2 had a Wright Cyclone engine but boosted to 790 hp (589 kW). 20 J2F-3 variants were built in 1939 for use as executive transports for the Navy with plush interiors.
Pressure of work following the United States entry into the [Vous devez être inscrit et connecté pour voir ce lien] in 1941 production of the J2F Duck was transferred to the [Vous devez être inscrit et connecté pour voir ce lien] of [Vous devez être inscrit et connecté pour voir ce lien].
They produced 330 aircraft for the Navy and US Coast Guard.
Several surplus Navy Ducks were converted for use by the [Vous devez être inscrit et connecté pour voir ce lien] in the [Vous devez être inscrit et connecté pour voir ce lien] role as the OA-12 in 1948.
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Re: Grumman J2F Duck
Design
The J2F was an equal-span single-bay biplane with a large monocoque central float which also housed the retractable main landing gear.
It had strut-mounted stabiliser floats beneath each lower wing.
A crew of two or three were carried in tandem cockpits, forward for the pilot and rear for an observer with room for a radio operator if required.
It had a cabin in the fuselage for two passengers or a stretcher.
The Duck's main pontoon was blended into the fuselage, making it almost a [Vous devez être inscrit et connecté pour voir ce lien] despite its similarity to a
conventional landplane which has been float-equipped.
This configuration was shared with the earlier [Vous devez être inscrit et connecté pour voir ce lien], Grumman having acquired the rights to Loening's hull, float and undercarriage designs.
Like the [Vous devez être inscrit et connecté pour voir ce lien], its narrow-tracked landing gear was hand-cranked.
The J2F was an equal-span single-bay biplane with a large monocoque central float which also housed the retractable main landing gear.
It had strut-mounted stabiliser floats beneath each lower wing.
A crew of two or three were carried in tandem cockpits, forward for the pilot and rear for an observer with room for a radio operator if required.
It had a cabin in the fuselage for two passengers or a stretcher.
The Duck's main pontoon was blended into the fuselage, making it almost a [Vous devez être inscrit et connecté pour voir ce lien] despite its similarity to a
conventional landplane which has been float-equipped.
This configuration was shared with the earlier [Vous devez être inscrit et connecté pour voir ce lien], Grumman having acquired the rights to Loening's hull, float and undercarriage designs.
Like the [Vous devez être inscrit et connecté pour voir ce lien], its narrow-tracked landing gear was hand-cranked.
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- Messages : 739
Re: Grumman J2F Duck
Variants
J2F-1
Initial production version with 750 hp R-1820-20 engines, 29 built.
J2F-2
United States Marine Corps version with nose and dorsal guns and underwing bomb racks, 21 built.
J2F-2A
As J2F-2 with minor changes for use in the United States Virgin Island, 9 built.
J2F-3
J2F-2 but powered by a 850 hp R-1802-26 engine, 20 built.
J2F-4
J2F-2 but powered by a 850 hp R-1820-30 engine and fitted with target towing equipment, 32 built.
J2F-5
J2F-2 but powered by a 1,050 hp R-1820-54 engine, 144 built.
J2F-6
Columbia Aircraft built version of the J2F-5 with 1,050 hp R-1820-64 engines in a long-chord cowl, fitted with
underwing bomb-racks and provision for towing-gear, 330 built.
OA-12
Air/Sea Rescue conversion for the United States Army Air Force.
J2F-1
Initial production version with 750 hp R-1820-20 engines, 29 built.
J2F-2
United States Marine Corps version with nose and dorsal guns and underwing bomb racks, 21 built.
J2F-2A
As J2F-2 with minor changes for use in the United States Virgin Island, 9 built.
J2F-3
J2F-2 but powered by a 850 hp R-1802-26 engine, 20 built.
J2F-4
J2F-2 but powered by a 850 hp R-1820-30 engine and fitted with target towing equipment, 32 built.
J2F-5
J2F-2 but powered by a 1,050 hp R-1820-54 engine, 144 built.
J2F-6
Columbia Aircraft built version of the J2F-5 with 1,050 hp R-1820-64 engines in a long-chord cowl, fitted with
underwing bomb-racks and provision for towing-gear, 330 built.
OA-12
Air/Sea Rescue conversion for the United States Army Air Force.
Altus- CLUB
- Messages : 739
Re: Grumman J2F Duck
Specifications (J2F-6)
Data from Jane’s Fighting Aircraft of World War II
General characteristics
Performance
Armament
Data from Jane’s Fighting Aircraft of World War II
General characteristics
- Crew: two (pilot and observer)
- Capacity: two rescued [Vous devez être inscrit et connecté pour voir ce lien]
- Length: 34 ft 0 in (10.37 m)
- [Vous devez être inscrit et connecté pour voir ce lien]: 39 ft 0 in (11.9 m)
- Height: 13 ft 11 in (4.25 m)
- Wing area: 409 ft² (38 m²)
- Empty weight: 5,480 lb (2,485 kg)
- Loaded weight: 7,700 lb (3,496 kg)
- Powerplant: 1× [Vous devez être inscrit et connecté pour voir ce lien]-54 nine-cylinder [Vous devez être inscrit et connecté pour voir ce lien], 900 hp (670 kW)
Performance
- [Vous devez être inscrit et connecté pour voir ce lien]: 190 mph (304 km/h)
- [Vous devez être inscrit et connecté pour voir ce lien]: 155 mph (248 km/h)
- [Vous devez être inscrit et connecté pour voir ce lien]: 70 mph (112 km/h)
- [Vous devez être inscrit et connecté pour voir ce lien]: 780 mi (1,255 km)
- [Vous devez être inscrit et connecté pour voir ce lien]: 20,000 ft (6,100 m)
- [Vous devez être inscrit et connecté pour voir ce lien]: ft/min (m/s)
Armament
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- Messages : 739
Re: Grumman J2F Duck
Bibliography
- Allen, Francis J. "A Duck Without
Feathers". [Vous devez être inscrit et connecté pour voir ce lien]. Issue 23, December 1983—March
1984. Bromley, Kent UK: Pilot Press, 1983. pp.46—55, 77—78. - Hosek, Timothy. Grumman JF Duck - Mini in Action 7. Carrollton,
Texas: Squadron/Signal Publications Inc., 1996. [Vous devez être inscrit et connecté pour voir ce lien]. - Jarski, Adam. Grumman JF/J2F Duck
(Monografie Lotnicze 98) (in Polish with English captions). Gdańsk,
Poland: AJ-Press, 2007. [Vous devez être inscrit et connecté pour voir ce lien]. - Nuñez Padin, Jorge Félix. Grumman G.15, G.20 & J2F Duck (Serie Aeronaval Nro. 15) (in Spanish). Buenos
Aires, Argentina: Museo de Aviación Naval, Instituto Naval, 2002.
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