Patent ID: 8651811

Claim:
A method of transitioning between forward and reverse governing of a propeller system comprising the steps of: determining a power level angle; determining a propeller blade angle; and looking up a Propeller Control Mode cell from a Propeller Control Mode map in response to the power level angle and the propeller blade angle; transitioning from a forward governing range to a reverse governing range on the propeller control mode map in response to the propeller blade angle reaching a minimum forward blade angle or transitioning from the reverse governing range to the forward governing range on the propeller control mode map in response to the propeller blade angle reaching a maximum reverse blade angle; passing through a speed governors disabled mode cell on the Propeller Control Mode map while transitioning during which propeller speed is not controlled; resuming propeller speed governing in either the forward speed governing range or the reverse speed governing range on the Propeller Control Mode map after passing through the speed governors disabled mode cell; looking up a propeller min power request from the propeller control mode map; and communicating the propeller min power request to an engine control logic system.