Abstract: A flight-mode propeller overspeed governor and underspeed governor is shown and described. The description includes a reset of the overspeed governor during engine acceleration and a reset of the underspeed governor during engine deceleration to eliminate sluggish transient response in the engine.

Abstract: A microwave application chamber including a reactive and absorptive choke is shown and described. The absorptive choke is made of a material having the same or close dielectric constant as the material being treated so that microwave energy will pass readily from the material being treated into the absorptive choke. The interface between the absorptive choke and the material being treated is essentially transparent to microwave without reflections. This transparency permits microwave energy to be absorbed in the absorptive choke which otherwise would follow the waveguide created by the material being treated and exit into the environment.