Slater Aviation · Engine systems
Work the throttle and propeller control, change the airspeed, and watch the governor, the hub, and the blade keep the rpm constant. Compare a non-feathering propeller with a feathering one.
On speed.
Forward (right) is low pitch, high rpm. Back (left) is high pitch, low rpm.
A simplified teaching model of a 200-horsepower normally aspirated engine with a two-blade constant-speed propeller. Numbers are illustrative and the mechanisms are schematic (real governors and hubs vary by manufacturer). Follow your POH. References: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 7; Airplane Flying Handbook (FAA-H-8083-3C), Chapters 12 and 13; Aviation Maintenance Technician Handbook–Powerplant (FAA-H-8083-32B), Chapter 7.