Lockheed CL-475: Difference between revisions
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After completion at Burbank it was taken to Rosamond Lake in the Mojave Desert for testing. It first flew on 2 November 1959 but excessive vibration was present so for the next six months the team experimented with three and four-bladed rotors.<ref name="Lockheed" /> The helicopter was reasonable stable when a metal three-bladed rotor was used.<ref name="Lockheed" /> In the mid-1960s the helicopter was test flown by a number of government agencies and the military and it proved easy to fly.<ref name="Lockheed" /> The rigid rotor concept was then used in a number of Lockheed designs including the XH-51 and later AH-56A Cheyenne. |
After completion at Burbank it was taken to Rosamond Lake in the Mojave Desert for testing. It first flew on 2 November 1959 but excessive vibration was present so for the next six months the team experimented with three and four-bladed rotors.<ref name="Lockheed" /> The helicopter was reasonable stable when a metal three-bladed rotor was used.<ref name="Lockheed" /> In the mid-1960s the helicopter was test flown by a number of government agencies and the military and it proved easy to fly.<ref name="Lockheed" /> The rigid rotor concept was then used in a number of Lockheed designs including the XH-51 and later AH-56A Cheyenne. |
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After a period of storage the helicopter was donated to the [[National Air and Space Museum]] who exhibited it at the [[United States Army Aviation Museum]] at Fort Rucker, Alabama.{{cn}} |
After a period of storage{{vague|how long in storage, when was it donated?}} the helicopter was donated to the [[National Air and Space Museum]] who exhibited it at the [[United States Army Aviation Museum]] at Fort Rucker, Alabama.{{cn}} |
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==Specifications== |
==Specifications== |
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Revision as of 23:15, 13 July 2009
| CL-475 | |
|---|---|
| Role | Experimental helicopter |
| National origin | United States |
| Manufacturer | Lockheed |
| Designer | Irven Culver |
| First flight | 2 November 1959 |
| Status | On display |
| Number built | 1 |
The Lockheed CL-475 is a two-place, single-engine, light helicopter developed by Lockheed to explore rigid rotor technology. The CL-475 has a three-bladed main rotor and a two-bladed tail rotor. Only one was built.[1]
Design and development
The CL-475 was designed in the 1959 to test the concept of using a rigid-rotor.[1] The CL-475 was a two-seat helicopter with steel and aluminium structure covered with fabric.[1] It had side-by-side seating in a plexiglass cabin and a nosewheel landing gear.[1] It is powered by a 140hp Lycoming O-360-A1A four-cylinder air-cooled piston engine diving a two-bladed wooden rotor.[1]
After completion at Burbank it was taken to Rosamond Lake in the Mojave Desert for testing. It first flew on 2 November 1959 but excessive vibration was present so for the next six months the team experimented with three and four-bladed rotors.[1] The helicopter was reasonable stable when a metal three-bladed rotor was used.[1] In the mid-1960s the helicopter was test flown by a number of government agencies and the military and it proved easy to fly.[1] The rigid rotor concept was then used in a number of Lockheed designs including the XH-51 and later AH-56A Cheyenne.
After a period of storage[vague] the helicopter was donated to the National Air and Space Museum who exhibited it at the United States Army Aviation Museum at Fort Rucker, Alabama.[citation needed]
Specifications
Data from [1]
General characteristics
- Crew: 2
Performance
See also
Related development
Related lists
References
Notes
Bibliography
- Francillon, René J. (1982). :Lockheed Aircraft since 1913. London: Putnam & Company. ISBN 0-370-30329-6.