In normal driving the stator blades are arranged at 'cruise' angle, with improved efficiency and response at light throttle.
A lack of suitable alloys due to war shortages meant the turbine rotor and stator blades would sometimes disintegrate on first operation and never lasted long.
I found these glued to the stator blades inside the intakes of the plane I was to fly.
After passing through the first stage turbine wheel, the gas was redirected by the stator blades and entered the second stage turbine wheel.
This consists of symmetrical rotor and stator blades.
The stator blades moved from high to low position by an electrical solenoid and a stator valve, controlled by a switch on the throttle linkage.
A rotor wake induces on the downstream stator blades a fluctuating vane loading, which is directly linked to the noise emission.
Horsepower jumped to 236, and a new variable-pitch Dynaflow, in which the stator blades changed pitch under hard acceleration, provided quicker off-the-line getaway.
Rest of the changes occur in the stator blades of the turbines and the volute casing as it has a varying crossectional area.
Varying stator blades prevented excessive top end speeds, and provided engine braking on deceleration.