..., and variations in trailing edge shape due to manufacturing problems. The analysis included detailed trailing edge measurements, an open water test. and panel method computations. united states government geometry coefficient thrust trailing edge inspection north america government propeller 5370...

... An experimental study to measure developed thrust from a rigid foil subjected to unsteady oscillatory motion was conducted in the towing tank at Memorial University of Newfoundland. The foil tested had a rectangular planform, NACA0019 section, span of 400 mm, and aspect ratio 6...

... horsepower contribution risk and uncertainty assessment full-scale prediction prediction-uncertainty uspeed utorque correlation allowance thrust propeller uthrust GLOBAL UNCERTAINTY ANALYSIS OF FULL-SCALE SUBMARINE PROPULSION PREDICTIONS USING TOW-TANK MODEL TESTS M.R. Pfeifer, J.R. Lee, F...

... theoretically that net steady thrust, or drag, can result from nonlinear filtering in the products of unsteady body surface displacement and pressure distributions involved in the force itegrals. The efficiency of such propulsion is necessarily 100 percent since no losses occur in an inviscid fluid. Further...

... figure 1 model and full-scale waterjet propulsor multiphase pump npsh inlet efficiency cavitate diameter thrust inlet cavitation tunnel semi-flush inlet geometry stricker CAVITATION IN MODEL AND FULL-SCALE WATERJET PROPULSORS by John L. Allison, Band, Lavis & Associates, Inc. John G...

... The model to full scale correlation in resistance and powering between two scale model USMC waterjet propelled high speed amphibious vehicles is shown. The estimated required thrust for a 0.295 scale model of the High Water Speed Technology Demonstrator and a 0.245 scale model of the Propulsion...

... An advanced high performance waterjet propulsor was developed as part of the Marine Corps Surface Mobility technology development effort. Design optimization, performance estimating, and hydrodynamic design procedures are described for a propulsion unit required to meet specified thrust, power...

... and effective inflows. It is shown that most features of the interaction can be explained as a direct consequence of the propeller loading resulting from its operation with a three-dimensional nonuniform inflow. inflow experiment thrust propeller loading interaction hull propeller slipstream...

... with theoretical results from a linearised mathematical model. High propulsive efficiencies around 0.7 were obtained with this model propeller. In the zero speed condition, the propulsive thrust coefficient (CTb) decreases as the oscillating frequency increases. Investigations were made into the speed of advance...

... and analysis evaluating the validity of the claims. computer based training figure arrangement rotation coefficient propeller thrust shaft thrust performance assessment cap fin type device slipstream swirl shaft torque pbcf type device educational technology efficiency type device axis...

.../outboard torque ratio. Possible explanations for this phenomenon are given. prediction slipstream experiment extrapolation propeller slipstream ship correlation allowance discrepancy correlation experiment coefficient propeller torque outboard shaft revolution thrust arc constraint...