Model Test of a Waterjet Propulsion System for High Speed Amphibians

Abstract

A simple, bottom-inlet, waterjet was designed for evaluation in a fifteen-foot, manned testcraft. To aid in the planning of the experiments to be conducted with this craft, a 1/4.828 scale model was built and tank tested. The impeller was a stock 4-bladed marine model propeller housed in a cylindrical duct. Model resistance and trim were measured over a range of speeds. Waterjet velocity; propeller thrust, torque and rpm; and static pressures in the inlet casing were measured at several speeds bracketing the drag hump. Model waterjet performance was compared to design predictions.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1983
Accession Number
ADA140352

Entities

People

  • F. T. Korsmeyer

Organizations

  • Stevens Institute of Technology

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Boundary Layer
  • Computer Programs
  • Control Surfaces
  • Data Analysis
  • Digital Information
  • Dynamic Pressure
  • Equations
  • Flow Rate
  • Free Stream
  • Measurement
  • Model Tests
  • Pressure Distribution
  • Pressure Measurement
  • Propulsion Systems
  • Self Propelled
  • Static Pressure
  • Trim Angle

Readers

  • Aerodynamics.
  • Marine Hydrodynamics