The Bell Model 201 (military designation XH-13F) was created using a modified Model 47G and was the first Bell helicopter to use a turbine engine. == History == Built at the beginning of 1955 as part of a joint Army/USAF research program, the Model 201 was used to test component for the new XH-40, the prototype for the UH-1 Iroquois.
The Bell Model 201 (military designation XH-13F) was created using a modified Model 47G and was the first Bell helicopter to use a turbine engine. == History == Built at the beginning of 1955 as part of a joint Army/USAF research program, the Model 201 was used to test component for the new XH-40, the prototype for the UH-1 Iroquois.
Source: Wikipedia "Bell 201" · CC BY-SA 4.0
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