AIRPLANE PROPELLERS—HAMILTON HYDROMATIC—THEORY AND OPERATIONS

Produced by the US Army air forces. "Shows the assembly of a Hamilton Hydromatic propeller. Opens with a description of feathering and the advantages of feathering through the utilization of a variable pitch propeller." "Models, diagrams, and actual views are combined to show the construction of a variable pitch propeller. The mechanism to provide the variable pitch of the blades is shown with a discussion of constant speed operation."