| Manufacturer | Westland |
| Model | Whirlwind |
| Modification | Whirlwind Mk.I |
| Country | United Kingdom |
| Years | 1938 |
| Type | Fighter |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 13.70 m |
| Length | 9.83 m |
| Height | 3.20 m |
| Wing area | 23.20 m2 |
| Zero fuel weight | - |
| Empty weight | 3770 kg |
| Maximum takeoff weight | 5165 kg |
| Normal takeoff weight | 4697 kg |
| Flight duration | - |
| Engine | 2 Rolls-Royсе Peregrine I |
| Power | 2 x 885 HP |
| Thrust | - |
| Maximum speed | - |
| Cruising speed | 435 km/h |
| Rate of climb | 409 m/min |
| Practical range | 1000 km |
| Service ceiling | 9150 m |
| Hovering ceiling | - |
| Crew | - |
| Manufacturer | Westland |
| Model | Whirlwind |
| Modification | WS-55-3 |
| Country | United Kingdom |
| Years | 1952 |
| Type | Helicopter |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | - |
| Length | 12.88 m |
| Height | 4.00 m |
| Wing area | - |
| Zero fuel weight | - |
| Empty weight | 2159 kg |
| Maximum takeoff weight | 3629 kg |
| Normal takeoff weight | - |
| Flight duration | - |
| Engine | 1 Bristol Siddeley Gnome |
| Power | 1 x 795 HP |
| Thrust | - |
| Maximum speed | 196 km/h |
| Cruising speed | 167 km/h |
| Rate of climb | 366 m/min |
| Practical range | - |
| Service ceiling | 4870 m |
| Hovering ceiling | - |
| Crew | 2 |
