Grumman G-21 Goose

Grumman G-21 Goose
Krajiny	Spojené štáty americké
Úlohu	Preprava obojživelných lietadiel
Prvý let	1937
Postavený	345

Komisia Grumman G-21 Hus je obojživelná lietajúca loď navrhnutá spoločnosťou Grumman, aby slúžila ako osemmiestne "dochádzajúce" lietadlo pre podnikateľov v oblasti Long Islandu. Goose bol prvým jednoplošníkom spoločnosti Grumman, ktorý lietal, jeho prvým dvojmotorovým lietadlom a prvým lietadlom, ktoré vstúpilo do komerčných leteckých služieb. Počas druhej svetovej vojny sa hus stala efektívnou dopravou pre americkú armádu (vrátane pobrežnej stráže Spojených štátov), ako aj slúžila s mnohými ďalšími vzdušnými silami. Počas nepriateľských akcií prevzala husa čoraz väčší počet bojových a výcvikových úloh.

Zdrojový: Grumman G-21 Hus na Wikipédii

Grumman G-21 Goose Walk Around
Photographer	Bill Maloney
Localisation	Unknow
Photos	16

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Grumman Goose Walk Around
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General Characteristics and Role

The Grumman G-21 Goose is an American amphibious aircraft developed in the mid-1930s. It was the first monoplane designed by Grumman to enter commercial service. Originally built as a comfortable “commuter” for wealthy businessmen in the Long Island area who needed a reliable way to fly between their estates and New York City, the Goose quickly proved its versatility. Its ability to land on both water and land (thanks to its retractable landing gear) made it highly valued. During World War II, the Goose was adopted by the US military (as the JRF in the Navy/Coast Guard and OA-9 in the Army Air Forces) and the UK’s Royal Air Force for roles including anti-submarine patrol, search and rescue (SAR), and utility transport.

Property	Typical Value (G-21A)
Úlohu	Amphibious Utility Transport / Patrol Bomber
National Origin	Spojené štáty americké
Výrobca	Grumman Aircraft Engineering Corporation
First Flight	29 May 1937
Posádky	1–2 (Pilot, Co-Pilot)
Capacity (Passengers)	5–7 passengers
Dĺžka	11.74 m (38 ft 6 in)
Rozpätie krídel	14.94 m (49 ft 0 in)
Výška	4.93 m (16 ft 2 in)
Empty Weight	2,437 kg (5,375 lb)
Max Takeoff Weight	3,402 kg (7,500 lb)

Powerplant and Performance

Engine: 2 x Pratt & Whitney R-985 Wasp Junior nine-cylinder, air-cooled radial engines.
Power Output (Total): 670 kW (900 hp).
Propeller: Hamilton Standard constant-speed propellers.
Maximum Speed: 324 km/h (201 mph; 175 kn).
Cruise Speed: 305 km/h (190 mph).
Range: 1,030 km (640 mi; 560 nmi).
Service Ceiling: 6,400 m (21,000 ft).

Design and Unique Characteristics

Hull: All-metal monocoque hull for water operations.
Amphibious Gear: Features fully retractable landing gear, with the main wheels retracting into the side of the hull. The retractable gear provides versatility but adds complexity and weight.
Legacy: The Goose established Grumman as a major player in aviation and led to a line of successful amphibian aircraft, including the larger Mallard and Albatross.
Post-War Service: Many surplus military JRFs were converted back to civilian G-21s, seeing long service in Alaska, Canada, and the Caribbean as regional airliners.

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