WIND-TUNNEL TESTS OF A 1/20-SCALE AIRSHIP MODEL WITH STERN PROPELLERS

Abstract

An investigation was conducted on a 1/20-scale airship model to determine the characteristics and effects of sternmounted propellers. The investigation included tests of two different propellers, measurements of propeller thrust and power characteristics, airship force and moment characteristics, hull pressure distributions, and hull boundary-layer and wake characteristics. The tests were conducted for several propellerblade angles and rotational speeds for test velocities of about 94 and 139 ft/sec. The stern-mounted propeller gave a much higher propulsive efficiency than did a conventionalmounted or a fin-mounted-propeller. Sternpropeller operation had very small effects on the model aerodynamic characteristics.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1962
Accession Number
AD0270084

Entities

People

  • H. Clyde Mclemore

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Artificial Intelligence
  • Boundary Layer
  • Dynamic Pressure
  • Free Stream
  • Gages
  • Government Procurement
  • Layers
  • Measurement
  • Molecular Dynamics
  • Plastic Explosives
  • Pressure Distribution
  • Propellers
  • Static Pressure
  • Strain Gages
  • Wind Tunnel Tests
  • Wind Tunnels

Readers

  • Aerodynamics.
  • Marine Hydrodynamics