ByGokul LakshmananGyrocompass Introduction.Objective.Working principle.Purpose.Cost of production.Conclusion.Reference.
ContentsGyrocompass is a type of non-magnetic compass.
One important component of a gyrocompass is a gyroscope, but these are not the same devices.IntroductionTo construct a Gyrocompass.
ObjectiveGyrocompass consist of a spinning wheel mounted on gimbal so that the wheel's axis is free to orient itself in any way.When it is spun with its axis pointing in some direction, such a wheel will maintain its axis of rotation.A gimbal is constructed in such a way that no external torque acts on the axis of rotation of gyro.
Gyrocompass- working principle
a) For Navigation
b) To Stabilize Airplane and Ship
Purpose Of GyrocompassFor assisting navigation the axis of rotation of gyro is aligned to point towards the geographical north.
Since no external torque acts on the axis of rotation the gyro will always point towards geographical north irrespective of the motion of ship
a) Gyrocompass for navigation.
A marine gyrocompassA Gyrocompass is mounted on Airplane or Ship.
Variation in alignment of gimbal frame w.r.t axis of rotation of gyro is used judge the amount of pitch, roll and yaw experienced by Airplane or ship.
The degree of pitch , yaw or roll experienced by the ship is measured and converted into electrical signal by a transducer which is then send to the pilot or captain of the ship.b) Gyrocompass for stabilization
Seeks geographic (true) north instead of magnetic.
Gimbal lock occur when two axis align parallel to each other.Can be used near the earths magnetic poles, where magnetic compass is useless.
Requires a constant source of electrical power and is sensitive to power fluctuations.
Unaffected by surrounding metals.Requires periodic maintenance by qualified technicians.
Advantages & disadvantagesCOMPONENTSPECIFICATIONSDISCDIAMETER = 178.8 mm.MASS = 1.5 kg.
BALL BEARINGDIAMETER = 19.5 mm.Nos. = 6
PIPE (G I)DIAMETER = 19.5 mm.LENGTH = 6 m.
Components and specificationsMake a 3 axis gimbal and provide necessary joints to mount the gyro.Attach the gyro to the gimbal and provide sufficient rpmAlign the gyro axis pointing a specific direction, say North.Test the instrument by providing torque on frames of gimbal.Steps of construction
Equations Guiding Gyrocompass18Cost of productionComponentSpecificationCost (Rupees)Bearing
1100G I Pipe
6meters440Nuts and Bolts
3 Bottles278TOTAL1348A 3-axis Gimbal gyrocompass is constructed and is tested for accuracy.ConclusionGyrocompass - Wikipedia, the free encyclopedia
Gimbal - Wikipedia, the free encyclopedia
YOUTUBE: MIT Open Course Ware Lec. 24 | 8.01 Physics I: Classical Mechanics, Fall 1999