THE HYDRODYNAMICS AND STABILITY + CONTROL TANDEM PROPELLER SUBMARINE. PHASE II.
Abstract
Hydrodynamic and stability and control character istics are investigated for a novel submarine configuration employing tandem, large hub-to-tip diameter ratio propellers, the blades of which can be pitched both collectively and cyclicly. Earlier analyses, using combined blade element and momentum theory to describe the forces and moments produced by the propellers, are refined and extended to include the effect of cyclic pitch on propeller-induced inflow. A preliminary analysis of shrouded propeller hydrodynamics is included. Stability and control is investigated for Tandem Propeller Submarine (TPS) operation over the forward speed range from 0 to 40 ft/sec with both propellers thrusting. Low-speed oper ation is also investigated with one propeller thrusting and one counter-thrusting. Automatic control techniques for improving the stability and control characteristics of the TPS are pre sented. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1963
- Accession Number
- AD0426929
Entities
People
- E. Schroeder
- W. Wilson
Organizations
- Calspan