Accession Number : AD0895053

Title :   Hendy Boat Automatic Control Circuit.

Descriptive Note : Technical memo.,

Corporate Author : HYDROFOIL CORP ANNAPOLIS MD

Personal Author(s) : Miller, Robert L.

Report Date : 31 AUG 1951

Pagination or Media Count : 7

Abstract : In order to obtain automatic control for the hydrofoil boat, it is necessary to obtain information as to the position of the hydrofoil struts in the water, and to utilize this information to control the angle of attack of the various hydrofoils to maintain stable and level flight. In the Hendy boat, the information as to strut position is obtained from a set of eight pitot tubes on each forward strut. Each individual pitot connects to a bellows operated contact such that each submerged pitot closes its associated bellows contact. This information is then utilized in automatic circuits to stabilize the boat.

Descriptors :   *CONTROL SYSTEMS), (*HYDROFOIL CRAFT, (*CIRCUITS, STABILIZATION SYSTEMS), AUTOMATIC, CONTROL, ANGLE OF ATTACK, PITOT TUBES, SERVOMECHANISMS, STABILITY, LEVEL FLIGHT, ROLL.

Subject Categories : Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE