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Wind tunnel

  • US 4,073,188 A
  • Filed: 12/27/1976
  • Issued: 02/14/1978
  • Est. Priority Date: 12/30/1975
  • Status: Expired due to Term
First Claim
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1. A wind tunnel for testing a transport vehicle comprising:

  • a base;

    a system of channels for an air stream mounted on said base;

    a working chamber of said system to accommodate the transport vehicle under test;

    a means for creating the air stream in said system;

    rotary drums, for studying the power characteristics of the transport vehicle under test, mounted on said base so that their bearing surfaces are located in said working chamber and are essentially level with the floor of said working chamber;

    means for measuring the power characteristics of the transport vehicle mechanically linked with said rotary drums;

    a wind tunnel balance mounted on said base in the zone of said rotary drums to measure the aerodynamic forces and moments acting on the transport vehicle, said balance including a frame, which is arranged on the outer sides of said rotary drums so that said drums are inside said frame, said frame being located somewhat below the bearing surfaces of said rotary drums, at least three horizontal links connected to said frame, and vertical links having one end articulated with the ends of said horizontal links and the other end articulated with said base, said vertical links connecting each of said horizontal links with said base, one of said vertical links being directed up and the other being directed down;

    a supporting platform, on which the transport vehicle under test is placed, located in said working chamber and installed on said frame so that it can turn around the vertical axis in the course of tests of the transport vehicle on said wind tunnel balance, said supporting platform being installed on said frame so that it can be removed for testing the transport vehicle on said rotary drums;

    means for turning said supporting platform; and

    dynamometers secured on said base and linked mechanically with said frame.

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