GYROSCOPE

GYROSCOPE

GYROSCOPE

Abstract

A gyroscope is a dynamic device for measuring or maintaining orientation, based on the principles of conservation of angular momentum. The device is a spinning wheel or disk whose axle is free to take any orientation. This orientation changes much less in response to a given external torque than it would without the large angular momentum associated with the gyroscope's high rate of spin. Since external torque is minimized by mounting the device in gimbals, its orientation remains nearly fixed, regardless of any motion of the platform on which it is mounted.

Introduction

Gyroscopes can be very perplexing objects because they move in peculiar ways and even seem to defy gravity. These special properties make ­gyroscopes extremely important in everything from your bicycle to the advanced navigation system on the space shuttle. A typical airplane uses about a dozen gyroscopes in everything from its compass to its autopilot. The Russian Mir space station used 11 gyroscopes to keep its orientation to the sun, and the Hubble Space Telescope has a batch of navigational gyros as well.

Aim of the study

Gyroscopic force occurs on a spinning object (disk, wheel, whatever) when you try to alter the direction of the axis of spin. The main aim of the study is to analyze the

To determine the axes and directions of rotation of gyroscopic action.

To calculate the value of I of rotating rotor and disc by Bifilar Suspension?

To compare this value of I with the value of I in the equation T= I.W.W.p

Methods

Gyroscopic Action

Before the gyroscopic effects of the propeller can be understood, it is necessary to understand the basic principle of a gyroscope. All practical applications of the gyroscope are based upon two fundamental properties of gyroscopic action: rigidity in space and precession. The one of interest for this discussion is precession. Precession is the resultant action, or deflection, of a spinning rotor when a deflecting force is applied to its rim. As can be seen in figure 3-32, when a force is applied, the resulting force takes effect 90° ahead of and in the direction of rotation.

If you have ever played with toy gyroscopes, you know that they can perform all sorts of interesting tricks. They can balance on string or a finger; they can resist motion about the spin axis in very odd ways; but the most interesting effect is called precession. This is the gravity-defying part of a ...