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The Bell 47 is a two-bladed, single engine, light helicopter manufactured by Bell Helicopter. Based on the third Model 30 prototype, Bell's first helicopter designed by Arthur M. Young, the Bell 47 became the first helicopter certified for civilian use on 8 March 1946. More than 5,600 Bell 47 aircraft were produced, including aircraft produced under license by Agusta in Italy, Kawasaki Heavy Industries in Japan, and Westland Aircraft in the United Kingdom.
Design and development
Early Bell 47 models were variable in appearance, with open cockpits or sheet metal cabins, fabric covered or open structures, some with four-wheel landing gear. Later model D and Korean War H-13D and E types settled to a more utilitarian style. The most common model, the 47G introduced in 1953, can be recognized by the full bubble canopy, exposed welded-tube tail boom, saddle fuel tank s, and skid landing gear.
The later three-seat 47H had an enclosed cabin with full cowling and monocoque tail boom. It was an effort to market a "luxury" version of the basic 47G. Relatively few were produced.
Engines were Franklin or Lycomings of 200 to 305 HP (150 to 230 kW ). Seating varied from two (early 47s and the later G-5A) to four (the J and KH-4). As of 2005, many are still in use as trainers and in agriculture.
Bell 47s were produced in Japan by a Bell and Kawasaki venture; this led to the Kawasaki KH-4 variant, a four seat version of the Model 47 with a cabin similar to the Bell 47J. It differed from the "J" in having a standard uncovered tailboom and fuel tanks like the G series. They were sold throughout Asia, and some were used in Australia.
In the spring of 2010, the Bell 47 Type Certificates were transferred to Scott's - Bell 47, Inc. Scott's - Bell 47 is now responsible for providing product support for the Bell 47 helicopter.
The Bell 47 helicopter entered U.S. military service in late 1946, in a variety of versions and designations for three decades. In the Korean War, it was designated the H-13 Sioux by the United States Army. It has also served as the helicopter of choice for basic helicopter flight instruction in many countries.
NASA had a number of Bell 47s during the Apollo program, used by astronauts as a trainer for the Lunar Lander. Eugene Cernan had a near disastrous accident shortly before his flight to the moon on Apollo 17 by crashing one into the Indian River.
Batman used the Bell 47 as the "Batcopter" in "Batman the Movie" in 1966.
*13 May 1949, a Bell 47 set an altitude record of 18,550 feet (5,650 m).
*21 September 1950, first helicopter to fly over the Alps.
*17 September 1952, Bell pilot Elton J. Smith set a world distance record of 1,217 mi (1,959 km), by flying nonstop from Hurst, Texas to Buffalo, New York.
Pre-production version, powered by a 133-kW (178-hp) Franklin piston engine.
Improved version of the Bell 47, powered by a 117-kW (157-hp) Franklin O-335-1 piston engine.
Equivalent to the military YR-13/HTL-1, powered by the Franklin O-335-1 piston engine.
Agricultural/utility version with open crew positions.
First to appear with a moulded 'goldfish bowl' canopy.
Introduced in 1949, it had an open tubework tailboom reminiscent of the Bell Model 30, ship number 3, and a three-seat configuration.
Powered by a 149-kW (200-hp) Franklin 6V4-200-C32 engine.
Combines a 149 kW Franklin engine with the three-seat configuration of the 47D-1 and introduced the twin saddle-bag fuel tank configuration.
Powered by the Lycoming VO-435 engine. Produced under license by Westland Aircraft as the Westland Sioux, for the UK military.
Powered by a 179 kW version of the VO-435.
Wider cabin, improved rotor blades and increased fuel capacity.
Powered by a supercharged 168 kW Franklin 6VS-335-A.
Powered by a turbocharged 209 kW Avco Lycoming TVO-435.
Three-seat helicopter powered by an Avco Lycoming VO-540 engine.
A three-seat, utility version. A two-seat agricultural version was later known as the Ag-5. The 47G-5 was the last model to be produced by Bell.
A three-seat version with an enclosed cabin and fuselage.
;Bell 47J Ranger : A four-seat version powered by an Avco Lycoming VO-435 engine.
See H-13 Sioux
;Agusta A.115 :1971 Italian prototype of a Bell 47J with an unclad, tubular tail boom, and powered by a Turboméca Astazou II turboshaft engine;Meridionali/Agusta EMA 124 : Italian prototype with redesigned forward fuselage. Not produced.;Kawasaki KH-4 : Japanese production version with redesigned, lengthened cabin, and redesigned control system
Carson Super C-4
;El Tomcat Mk.II
Bell 47G-2 modified extensively for agricultural spraying by Continental Copters Inc. First flew in April 1959. Followed by further improved versions.
* The Steven F. Udvar-Hazy Center, Washington Dulles International Airport in Chantilly, Virginia, includes a Bell 47 and the Bell Model 30 predecessor.
* The Alberta Aviation Museum in Edmonton, Alberta is restoring a 47G Model.
* The Museum of Modern Art (MoMA) in New York City has a Bell 47D-1 on permanent display.
* Adventure Aviation in Tauranga, New Zealand uses a Bell 47G in a "M*A*S*H" paint scheme for tourist scenic flights.
* Red Bull - FlyingBulls - Hangar-7 in Salzburg, Austria flies a Bell 47 G-3B-1 (SOLOY) Reg. D-HEBA.
* The EAA AirVenture Museum in Oshkosh, Wisconsin, has multiple Bell 47 helicopters available to ride.
* The College of the North Atlantic (Gander Campus) has a functioning Bell 47 used as a training aid for students taking the Aircraft Maintenance Engineering program.
* The Canadian Aviation Museum, in Ottawa, Ontario, has a Bell 47 on display, as well as a removed cockpit section for visitors to sit in.
* Number 3 Squadron (Training Flight) of the Royal New Zealand Air Force (RNZAF) still operates the B47G as an ab-initio training helicopter. The first helicopters to be flown by the RNZAF, six B47G-3B-1 (NZ3701 -NZ3706) were delivered in 1965. Seven B47G-3B-2 (NZ3707 - NZ3713) were purchased in 1968 and delivered during 1970. The five remaining Sioux in RNZAF service are all B47G-3B-2. All will be replaced in 2011 by the Augusta A109LUH.
* A 47G Sioux Mk.2 (ex RAF XT562) is on static display at the South African Air Force Museum.
* A westland sioux is on display at the helicopter museum in England ]
* The North East Aircraft Museum, Tyne & Wear, United Kingdom, has a Bell 47D under restoration as of November 2010.
Specifications (Bell 47G-3B)
The Bell 47 appeared, and played key roles, in film and television productions. It has been associated with both the ''M*A*S*H '' film and ''M*A*S*H '' television series, and the ''Whirlybirds '' TV series (1957–1960). The helicopter also featured as the cover art for Swedish pop group ABBA 's album, ''Arrival'' (ABBA album) released in 1976