Hydrodynamic Stability and Control Analysis of GTOPS Vehicle.
Abstract
In response to a request for a dynamic analysis of an underwater vehicle design, NCSL conducted an investigation of the Gibson's Towed Profiling System (GTOPS) vehicle. The vehicle consisted of two like bodies joined by a wing and tail appendages. The configuration of the bodies was set, but the size and configuration of the appendages were subject to change. The vehicle was sized and analyzed to determine longitudinal and lateral stability. The analysis included the effects of geometric changes, tow cable considerations, twin fuselage interference drag, the effects of depth-keeping tethers, horizontal tail actuator sizing, and time domain dynamic vehicle response. Geometric variations of the twin-hulled hydrodynamic vehicle which were investigated included: the effects of wing position, horizontal and vertical tail size and shape, vehicle center of gravity and center of buoyancy separation, body-body separation distance, body shape, and speed variations from 2 to 12 knots. Root locus diagrams are presented for selected geometric variations, and time history trajectories are included for various tether tensions and control surface inputs.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1978
- Accession Number
- ADA054962
Entities
People
- D. C. Summey
- D. E. Humphreys
- K. W. Watkinson
- N. S. Smith