Accession Number : ADD001164

Title :   Dynamic Braking of a Gas Turbine Powered Ship Propulsion System Utilizing a D. C. Electric Drive.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Johnson,Roy D ; Rubis,Casimer Joseph

Report Date : 21 May 1974

Pagination or Media Count : 6

Abstract : The patent relates to a system whereby dynamic braking of a ship's propeller powered by a turboelectric drive system is achieved by dissipating the rotational energy of the propeller through the windage loss of the gas turbine rotor. Braking torque on the propeller is maximized by controlling the generator field current according to a predetermined profile so as to maximize armature braking current without exceeding rated armature current or rated rotor speed.

Descriptors :   *Propellers(Marine), *Braking, *Patents, Marine propulsion, Gas turbines, Electric propulsion

Subject Categories : Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE