Which among the following cam follower is extensively used in an aircraft engine?

Knife-edge follower: In this, the cam is in direct touch with a sharp knife edge. The rapid rate of wear at the knife edge means that this sort of follower is rarely used in actual applications, But it works with the cam of any form cam.

Roller follower: A roller is secured to the follower assembly by a pin in a roller follower. Due to its low rate of wear and ideal rolling contact with the cam, this type of follower is employed frequently in practice. Both oil and gasoline engines employ roller followers.

Flat follower: In this, the cam is in contact with the absolutely flat face. There will be sliding motion among the contacting surfaces in this follower, however the wear will be significantly decreased by offsetting the follower’s axis. High surface tensions are produced by this style of follower.

Spherical Follower: A spherical follower has a spherical surface that comes into touch with the cam. A spherical form with a surface having a large sphere radius is supplied to the flat end in order to reduce the surface stress created in the flat follower.

Summary:

Which among the following cam follower is extensively used in an aircraft engine? (A) Spherical follower (B) Roller follower (C) Flat faced follower (D) Knife edge follower

An aeroplane engine makes heavy use of roller followers. A pin in a roller follower holds a roller to the follower assembly. Because of their little wear at a high peripheral velocity of the cam and they are also utilized in aviation engines.