Schematic wiring diagram for Turnbull Variable Pitch Propeller No. 2, c. 1925 (1995.25.107.16.3 New Brunswick Museum) The problem Turnbull faced was how to adjust a spinning propeller blade in flight?

In order to decrease both the weight and the size of submarine, the variable vector propeller (i.e., VVP) has been applied on it. In this paper we will study the horizontal motion control for ...

In addition, the use of wide range of propeller pitch angle is discussed in order to produce enough drag to eliminate mechanical air brakes. The effectiveness of the proposed method is verified by ...