Abstract

This paper presents the design and installation of measuring vibration system in wind tunnel area 1m x 1m. The theoretical analysis of the spring structure in this model help we possible to design a system for wind tunnel by yourself with suitable area, wind speed as well as survey wing model to obtain results desire. This system helps us to observe the oscillation of wing survey by eyes, but to know exactly how wing fluctuates, also the pitching angle of wing, we use ultrasonic sensors to measure the distance variation, will be presented in more detail in the text. At the same time, the article also shows how to make a simple and durable wing model with NACA 0015 airfoil - wing model will be surveyed ranged in system above. The aerodynamic phenomena affect to the vibration of the wing are also mentioned and overcome in the design of the wing. Finally we process the data after measured to see the similarities between the experiment and the theoretical dynamics of aviation.

Highlights

  • Aerodynamic elastic phenomena are phenomena involving simultaneous of three forces: aerodynamic forces, elastic force and inertia force

  • - Flutter phenomenon is phenomenon of vibration, bending wings. The nature of this phenomenon is the harmonic oscillations of a self-stimulate certain structural components while at the same time the participation of the three forces

  • If the cruises speed much more than critical speed, the structure will be destroyed

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Summary

Introduction

Aerodynamic elastic phenomena are phenomena involving simultaneous of three forces: aerodynamic forces, elastic force and inertia force. General characteristic of these phenomena is oscillation. - Flutter phenomenon is phenomenon of vibration, bending wings The nature of this phenomenon is the harmonic oscillations of a self-stimulate certain structural components while at the same time the participation of the three forces (elastic forces, aerodynamic and inertia). Increasing the cruising speed, increasing force of maintain oscillations, to catch critical speed, oscillation structure will has constant amplitude. If the cruises speed much more than critical speed, the structure will be destroyed. Introduction to structural dynamics and aeroelasticity (2nd edition).

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