VIBRATION DEVICE FOR TESTING WIND TUNNEL

Japanese Patent JP3684389

B

PROBLEM TO BE SOLVED: To achieve pseudo sinusoidal wave vibration without using any advanced control rules and at the same time automatically change the average elevation of a wing model, the vibration amplitude, and the frequency by controlling three motors with a personal computer.
SOLUTION: After the average elevation and vibration amplitude of a wind model connected to a hollow shaft 1 are initially set, an elevation-setting motor 11 is rotated. Then, a rotary pulley 10 and a rotary base 9 are rotated via a ball screw 14 and a slide plate 13, and an amplitude-setting motor 8 is rotated with the same rotary center as an amplitude-setting pulley 7 and the pulley 10. At this time, when the rotation of a vibration motor 6 and the amplitude- setting motor 8 is locked, a slide rod 3 is locked and a vibration pulley 2 is rotated, and the elevation of the wind model can be set via a hollow shaft 1. Also, when the rotary shaft of a rotary inclined plate 5 is inclined, the vibration motor 6 is rotated, the slide rod 3 is subjected to linear or rotary movement via the movement of a connecting rod 4, linear movement being taken out by connecting fitment 12 is converted into rocking movement via a steel belt, is transmitted from a hollow shaft 1 to a wing mode type, thus drawing a pseudo sinusoidal wave trace.

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Kikuchi, Takao

JP1999000166158

June 10, 2005

June 14, 1999

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JAPAN SCIENCE & TECHNOLOGY CORP
Natl, Aerospace Lab

G01M9/04; G01M7/02; G01M9/00; G01M7/00; (IPC1-7): G01M9/04; G01M7/02

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