Bell H-12: Difference between revisions
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* '''Bell''' |
* '''Bell''' |
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** [[Bell 42|42]] - [[Bell 44|44]] - [[Bell 47|47]] - '''48''' - [[Bell 52|52]] - [[Bell 54|54]] - [[Bell 60|60]] |
** [[Bell 42|42]] - [[Bell 44|44]] - [[Bell 47|47]] - '''48''' - [[Bell 52|52]] - [[Bell 54|54]] - [[Bell 60|60]] |
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* '''US Army pre-1962''' |
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** [[Firestone R-9|R-9]] - [[Kellett R-10|R-10]] - [[Rotorcraft R-11|R-11]] - '''R-12''' - [[Bell R-13|R-13]] - [[Firestone R-14|R-14]] - [[Bell R-15|R-15]] |
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* '''US Military post-1962''' |
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** [[Firestone H-9|H-9]] - [[Kellett H-10|H-10]] - [[Rotorcraft H-11|H-11]] - '''H-12''' - [[Bell H-13|H-13]] - [[Firestone H-14|H-14]] - [[Vertol H-16|H-16]] |
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Revision as of 21:51, 10 June 2007
Template:Infobox Aircraft The Bell R-12 (Model 48) was a American 1940s utility built by Bell Helicopter company.
Development
During 1946 began developed of an enlarged version of the Model 47. Two prototypes were ordered by the United States Air Force as the XR-12. It was powered by a R-1340 Wasp radial engine and seated five. Another prototype (the XR-12B) with a more powerfull R-1340 engine and increased seating for eight was also ordered. With a change in designation system the helicopter was re-designated the H-12. Test were not satisfactory and ten pre-production and 34 production aircraft were cancelled.
Variants
- XR-12
- prototype, redesignated XH-12, two built.
- R-12A
- production version, 34 on order cancelled.
- XR-12B
- prototype with more powefull engine and increased seating, re-designated XH-12B, one built.
- YR-12B
- as XR-12B but with R-1340-55 engines, re-designated YH-12B, ten built.
- XH-12
- XR-12 re-designated in 1947.
- XH-12B
- XR-12B re-designated in 1947.
- YH-12B
- YR-12B re-designated in 1947.
Operators
Specifications (XR-12B)
 |
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General characteristics
- Crew: 4
Performance
External link
References
- The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing.
{{cite book}}: Cite has empty unknown parameter:|coauthors=(help) - Andrade (1979). U.S.Military Aircraft Designation and Serials since 1909. Leicester, England. ISBN 0 904597 22 9.
{{cite book}}: Cite has empty unknown parameter:|coauthors=(help); Unknown parameter|publishe=ignored (help)CS1 maint: location missing publisher (link)
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