Sprag clutch - aircraft engine, Other Engineering

Sprag Clutch :

Sprag clutches are used to provide the disconnect mechanism between the starter motor and the engine. The clutch will transmit drive from the starter motor, but will disconnect the drive when the engine speed exceeds the starter. The clutch consists of two smooth concentric drive faces and between them a cage containing many elongated figure of eight shaped cams called "sprags". All the surfaces are hardened to reduce wear, and are lubricated by oil. The sprag are spring loaded in contact with the starter drive so that when the shaft starts to rotate the sprags stand up and contact the engine drive due to the cam action of their shape. See Figure 13.6. As engine RPM accelerates its drive will be faster than the starter motor and the clutch will automatically dis-engage as sprags get pushed back to their minimum height position.

Sprag clutches are used on most types of starter motor or in drives where one way drive is required such as helicopter gearboxes.

2318_Sprag Clutch.png

Posted Date: 9/12/2012 4:10:23 AM | Location : United States

Related Discussions:- Sprag clutch - aircraft engine, Assignment Help, Ask Question on Sprag clutch - aircraft engine, Get Answer, Expert's Help, Sprag clutch - aircraft engine Discussions

Write discussion on Sprag clutch - aircraft engine
Your posts are moderated
Related Questions

Direct probe,isolation probe,high impedence probe,active probe,current probe

Liquidity Ratios: The liquidity ratios of the company help in determining the ability of the company to convert its current or liquid assets readily into cash. Higher the ratios be

Does the accelerated slipstream create more lift on part of a wing behind the propeller of a multa-engine aircraft? If so, about how much % for an Air King b200? Also the V-22 O

Means of escape - place of safety: The means of escape in a building are often supplemented by a fire warning system that may or may not include automatic detection, depending

Agricultural engineering does not easily mean only fruits and vegetables formed from the fields. Agriculture has come up with a dissimilar  look now. When you open a paouch of chip

what is the effect of temperature on pn junction diode of component

Q.  Define the polymorphism. Ans. POLYMORPHISM: It is defined as the change in atomic structure which occurs at a definite transformation temperature. The cooling diagram of

i want to make a project which is based on video transmission via laser ..please help me