91633007 Gyroscopic Effects

7/27/2019 91633007 Gyroscopic Effects

1/12

Gyroscopic torque and its effects


2/12

Gyroscopic torque If the axis of spinning or rotating body is given an angular

velocity about an axis perpendicular to the axis of spin, which

results in the angular acceleration about the third perpendicular

axis.

The torque that is required to produce this effect is called gyroscopictorque.

.


3/12

Cont.

acts similar to the centripetal and centrifugal forces on rotating

body.

And the effect produced by this reactive couple is called

gyroscopic effect.

Aeroplanes,ships,automobiles etc. having rotating parts as

wheels or rotors experience this effect

acts similar to the centripetal and centrifugal forces on rotating

body.

And the effect produced by this reactive couple is called

gyroscopic effect.

And Gyroscope , is a spinning body is which is free to move inother directions under the action of external forces


4/12

Gyroscopic effects are on..Any system having rotating parts as wheels or rotors

will experience this effect

a few areAero planes

Ships

Automobiles


5/12

Gyroscopic effect in cars Most of the gyroscopes mass should be as far away from the center as

possible. This often results in a disc with a large heavy rim. When thegyroscope isn't rotating it behaves like any other object, however whenthe gyroscope is spun on its axis at high speed it resists movements incertain directions.


6/12

Gyroscopic Precession

When the gyroscope is spinning it can contain largeamounts of stored energy.

Because of the forces when the gyroscope is spinning,if it is moved the gyroscope will try to 'compensate' for

this movement. .


7/12

Bicycle wheel


8/12

Gyroscopic effect on naval ships


9/12

Terms used in wef naval ships motion

(a) Bow is the fore or the front end.

(b) Stern or aft is the rear end.

(c) Starboard is the right-hand side when looking from thestern.

(d) Port is the left-hand side when looking from the stern.

(e) Steering is turning on the side when viewing from the top.

(f) Pitching is limited angular motion of the ship about thetransverse axis.

(g) Rolling is limited angular motion of the ship about thelongitudinal axis.


10/12

Stability of an automobile

If the gyroscope/engine is spinning at a fairly high speed ina clockwise direction, as seen from the back of the car andas shown in the diagram above.

When the car is turned to the right (clockwise from above)the car forcing the front end of the car down and the backend up. If the car is turned to the left then the front end ofthe car is forced up and the back end forced down. If thegyroscope is spinning in the opposite direction then thereverse will happen.

However if the car was moved directly upwards,downwards, forwards, back-wards or side-to-side the

gyroscope would not apply any extra forces. The gyroscopeonly applies extra forces when the car is moved at an angle(turning left/right or when the front/back of the car ismoved up/down). This effect is known as gyroscopicprecession


11/12

uses1.The Hubble Space Telescope is steadily orientated to view thestars using gyroscopes,Hubble actually uses three gyroscopes to orientate itself.because the simple reason is rockets emits pollution which hindersthe telescopes observations.

2.a gyroscope reacts to conserve momentum is manipulated tostabilize ships. A gyroscope is kept constantly spinning using air

jets.When the ship tilts due to ocean waves, the angle by which

the ship has been displaced can accurately be measured usingmagnetic induction.Using this information the ships stabilisers then alter theorientation of the ship.


12/12

Uses of gyroscope

Science demonstrations

Computer pointing devices

Racing cars

Motor bikes

Spinning toys

Gyrocompasses

Virtual reality

Monorail trains

Ship stabilisers etc.

Documents

91633007 Gyroscopic Effects