WORKING PRINCIPLE OF GYROSCOPE

 WHAT IS GYROSCOPE?

A gyroscope is a mechanical or electronic device that utilizes the principle of angular momentum to maintain its orientation relative to the Earth's axis or resist changes in its orientation.

   One of the wonders of Gyroscope that is in the space revolving earth more than

that is International Space Station (ISS). For its stabilisation and orbital lift gyro wheels are used, that reduces the fuel cost and man power.

TYPES OF GYROSCOPES:

1. Mechanical gyroscope
2. Ring laser gyroscopes
3. Fibre optic gyroscope
4. Coriolis vibratory gyroscope 

these are the major types of gyros.

Mechanical gyroscope:

The main working principle of this gyroscope is balancing in a particular axis using centrifugal force. n the case of a gyroscope with two gimbals, the outer gimbal, which is the gyroscope frame, is mounted so as to pivot about an axis in its own plane determined by the support. This outer gimbal possesses one degree of rotational freedom and its axis possesses none. The second gimbal, inner gimbal, is mounted in the gyroscope frame (outer gimbal) so as to pivot about an axis in its own plane that is always perpendicular to the pivotal axis of the gyroscope frame (outer gimbal). This inner gimbal has two degrees of rotational freedom.

Fibre optic gyroscope:

The main working principle of tis gyros is SAGNAC EFFECT, which explains that In the context of the Sagnac effect, an interferometer is a device that splits a beam of light into two parts, sends them along different paths in opposite directions, and then recombines them. The interference pattern produced when the beams recombine can be used for various purposes, such as measuring rotations or detecting small changes in distance.

Ring laser gyroscope:

A ring laser gyroscope (RLG) consists of a ring laser having two independent counter-propagating resonant modes over the same path; the difference in phase is used to detect rotation. It operates on the principle of the  sagnac effect which shifts the nulls of the internal standing wave pattern in response to angular rotation. Interference between the counter-propagating beams, observed externally, results in motion of the standing wave pattern, and thus indicates rotation.

Coriolis vibratory gyroscope:

A vibrating structure gyroscope (VSG), as a Coriolis vibratory gyroscope (CVG), is a gyroscope that uses a vibrating structure to determine the rate of rotation. A vibrating structure gyroscope functions much like the halteries of flies.

The underlying physical principle is that a vibrating object tends to continue vibrating in the same plane even if its support rotates. The coriolis effect causes the object to exert a force on its support, and by measuring this force the rate of rotation can be determined.