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Bell HSL
| HSL (Bell Model 61) | |
|---|---|
| Type | tandem-rotor ASW helicopter |
| Manufacturer | Bell Helicopter |
| Maiden flight | 4 March 1953 |
| Introduced | 1957 |
| Primary user | United States Navy |
| Number built | 54 |
The Bell HSL (Model 61) was an American 1950s anti-submarine warfare helicopter built by Bell Helicopter company, the only tandem rotor design by Bell.
Contents
Design and development
On 4 March 1953 the prototype Bell Model 61 first flew, it had been designed to meet a United States Navy requirement for an anti-submarine warfare helicopter. In June 1950, the Model 61 was announced as the winner of the competition, three XHS-1 evaluation aircraft were ordered. The Model 61 was had a rectangular-section fuselage structure and a four-wheel landing gear. It was powered by a Pratt & Whitney R-2800 radial engine mounted in the aft fuselage. Crew included two pilots and two sonar operators.
Service test resulted in an order for 78 aircraft designated HSL-1, with 18 intended for the Royal Navy. Subsequently, only 50 were built and none were delivered.
Operational history
The first aircraft entered service with the Helicopter Squadron HU-1 in January 1957. Limited performance meant the aircraft did not remain in service for long.
Variants
- XHSL-1
- three Model 61s for evaluation.
- HSL-1
- production version, 50 built.
Operators
Specifications (HSL-1)
This aircraft article is missing some (or all) of its specifications. If you have a source, you can help Wikipedia by adding them.General characteristics
- Crew: 4
- Length: 29 ft 2¾in (11.96 m)
- Rotor diameter: 51 ft 6 in (15.70 m)
- Height: 14ft 6in (4.42 m)
- Disc area: 4,166 ft² (387.02 m²)
- Max takeoff weight: 26,500 lb (12020 kg)
- Powerplant: 1× Pratt & Whitney R-2800-5 Double Wasp radial piston, 1,900 hp (1417 kW)
- Propellers: 2 rotor, 2 per engine
- Propeller diameter: 51 ft 6in (15.70 m)
Performance
- Maximum speed: 115 mph (185 km/h)
- Cruise speed: 95 mph (153 km/h)
- Range: 350 miles (563 km)
References
- Andrade, John M. U.S.Military Aircraft Designation and Serials since 1909. Leicester, UK: Midland Counties Publications, 1979. ISBN 0-904597-22-9.
- The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). London, Orbis Publishing.
External links
See also
Designation sequence
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Lists relating to aviation | |
|---|---|
| General | Timeline of aviation · Aircraft · Aircraft manufacturers · Aircraft engines · Aircraft engine manufacturers · Airports · Airlines |
| Military | Air forces · Aircraft weapons · Missiles · Unmanned aerial vehicles (UAVs) · Experimental aircraft |
| Notable incidents and accidents | Military aviation · Airliners · General aviation · Famous aviation-related deaths |
| Records | Flight airspeed record · Flight distance record · Flight altitude record · Flight endurance record · Most produced aircraft |
| This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Bell HSL". |
