Bell HSL
The Bell HSL (Model 61) was an American 1950s anti-submarine warfare (ASW) helicopter built by the Bell Helicopter company, the only tandem rotor type designed by Bell.
| HSL (Bell Model 61) | |
|---|---|
| The U.S. Navy Bell XHSL-1 prototype in flight. | |
| Role | Tandem-rotor ASW helicopter |
| National origin | United States |
| Manufacturer | Bell Helicopter |
| First flight | 3 March 1953 |
| Introduction | 1957 |
| Retired | 1960 |
| Primary user | United States Navy |
| Number built | 53 including one static test article |
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