Sprag clutch - aircraft engine, Other Engineering

Assignment Help:

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


Related Discussions:- Sprag clutch - aircraft engine

Blade twist - aircraft engine, BLADE TWIST: Rotational velocity and its...

BLADE TWIST: Rotational velocity and its effect on the Angle of Attack depends on the radius of the blade element in question. A blade element near the blade root (hub) will h

Bjt, why we use h for bjt

why we use h for bjt

Heisenberg''s uncertainty principle , According to this it is impossible to...

According to this it is impossible to specify precisely and simultaneously two physical quantities those are canonically conjugate to each other and the product of the uncertainty

Time motion study, how to create a chart of time motion study

how to create a chart of time motion study

Output characteristics , OUTPUT CHARACTERISTICS: Figure shows a "Common...

OUTPUT CHARACTERISTICS: Figure shows a "Common Emitter" amplifier stage. Common Emitter Amplifier Stage With no base/emitter bias applied, there will be no collector

Water treatment plant , i need to design a water treatment plant with raw w...

i need to design a water treatment plant with raw water entering ph of 10 and needs to have a ph of 7 when leaving the treatment process the rate of flow 260lt/sec

Engine lubrication systems - air craft engine , Engine lubrication systems ...

Engine lubrication systems There are basically two types of lubrication system at present in use in gas turbine engines:- a) Recirculatory. In this system, oil is distribut

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd