by throttling the working fluid, by adjusting vanes

Full Title

Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants (controlling air intakes F02C7/057; controlling turbines F01D; controlling compressors F04D27/00; controlling in general G05) > Control of fuel supply conjointly with another control of the plant (with nozzle section control F02K1/17) > with control of working fluid flow > by throttling the working fluid, by adjusting vanes