| Manufacturer | Westland |
| Model | Welkin |
| Modification | - |
| Country | United Kingdom |
| Years | 1942 |
| Type | Fighter |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 21.40 m |
| Length | 12.60 m |
| Height | 4.80 m |
| Wing area | 42.70 m2 |
| Zero fuel weight | - |
| Empty weight | - |
| Maximum takeoff weight | - |
| Normal takeoff weight | - |
| Flight duration | - |
| Engine | 2 Rolls-Royce Merlin 76 (72) |
| Power | 2 x 1250 (1290) HP |
| Thrust | - |
| Maximum speed | 616 km/h |
| Cruising speed | - |
| Rate of climb | - |
| Practical range | 2500 km |
| Service ceiling | 14000 m |
| Hovering ceiling | - |
| Crew | - |
