Cierva W.9
- The Cierva Autogiro Co - formed in 1943 out of the rotary-wing department
of G & J Weir - obtained a contract for two experi-mental helicopters
to Spec E.16/43. Completed late-1944, (he first Cierva W.9 (eventu-ally
to be marked PX203) had a manually-controlled tilting main rotor hub and
used a jet of warm air from an engine-driven blow-er for torque control.
The engine was a 210 hp DH Gipsy Queen II. After being dam-aged in ground
running, the Cierva W.9 was rebuilt, slightly modified, and entered full
flight testing in mid-1945. No data available for early version.
