Preliminary Propulsion and Lift-Power Tradeoff for a Large Surface Effect Vehicle

Abstract

To determine the desirable speed and cushion pressure operating region of large surface effect vehicles, a propulsion and lift-power tradeoff study has been made for both overland and overwater operation. In addition, range has been examined as it is related to the associated fuel fraction and cargo-carrying capacity. The power tradeoff study examines the effect of the various drag components and efficiencies at the minimum power. The cargo- carrying study considers the effect of the available payload area and payload weight as a function of cushion pressure. The thrust margin study examines the impact on power requirement for the low-speed wave drag hump. The results generally indicate that cargo-carrying considerations restrict the maximum cushion pressure due to space and the maximum velocity due to cost consideration, while the overwater thrust margin study restricts the vehicle to low cushion pressure and high maximum velocity capability.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1973
Accession Number
AD0913413

Entities

People

  • David W Taylor
  • Rolf K. Muench

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aerodynamic Drag
  • Air Force
  • Differential Equations
  • Equations
  • Froude Number
  • Ground Effect Machines
  • Landing Craft
  • Lift Fans
  • Maryland
  • Numbers
  • Payload
  • Propulsion Systems
  • Shrouded Propellers
  • Surface Effect Ships
  • Surface Effect Vehicles
  • Test And Evaluation
  • Turbines

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Logistics and Supply Chain Management.
  • Systems Analysis and Design

Technology Areas

  • Space
  • Space - Hall-Effect Thruster