AMPHIBIOUS VEHICLE STUDIES.

Abstract

The report describes theoretical work aimed at increasing the speed of amphibious vehicles in the water, by decreasing resistance and (if grousers are used for propulsion) improving the flow to the grousers. Alternate mathematical models of the flow were examined and it was concluded that a simple block singularity model gave the best fit to measured resistance data. Although the fit is not very good, and although the mathematical model does not represent the vehicle shape very accurately, it was decided that the model was good enough to serve as a basis for the design of hull modifications intended to reduce drag (and improve the flow to the grouser region). A bulb-like singularity modification was designed mathematically and showed a substantial calculated resistance reduction. Due to lack of funds it was not possible to examine the corresponding modified hull shape, nor to conduct any model tests, but the theoretical results suggest that further work in this direction would be profitable.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1966
Accession Number
AD0647085

Entities

People

  • Jack Kotik

Organizations

  • Control Data Corporation

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amphibious Vehicles
  • Aspect Ratio
  • Box Beams
  • Classification
  • Contracts
  • Corporations
  • Froude Number
  • Governments
  • Mathematical Models
  • Military Research
  • Model Tests
  • Models
  • Resistance
  • Security
  • Stagnation Point
  • United States Government
  • Vehicles

Readers

  • Computational Modeling and Simulation
  • Fluid Dynamics.
  • Logistics and Supply Chain Management.