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First successful helicopter design in US service
- R-4B
- Add
R-4B
| Manufacturer Designation | |
|---|---|
| Role | Helicopter |
| Crew | 1 |
| In service with | |
| Number built | 100 |
| Conversions |
| Length | 33ft 8in |
|---|---|
| Wingspan | 38ft 0in |
| Height | 12ft 5in |
| Wing Area | |
| Empty | 2,098lb |
| Gross | 2,581lb |
| Maximum |
| Powerplant | |
|---|---|
| Speed |
65mph (cruise)
75mph (max)
|
| Ceiling | 8,000ft |
| Range |
130 miles (internal)
|
| Guns | |
|---|---|
| Bomb load | |
| Torpedoes | |
| Rockets |
| Radio | |
|---|---|
| Radar | |
| IFF Devices | |
| Radar Detectors | |
| Jammers | |
| Nav Devices |
Notes