Precision in every rotation.

This is the main Rotor system for the Sikorsky helicopter. Not every helicopter pals can make the "lead-lag" movement, it is the part called elastomeric bearing that provides this.

Cool!🤣🤣🤣

a little bit of explanation about Jesus' Nut, I beg

All those components subject to wear, maintenance and failure risk

@Japan_GSDF ..

To me, it's a serious, giant lawnmower with thousands of parts waiting to suffer metal fatigue and hydraulic leaks.

My wallet says 'no' but my brain says 'tell me more about the flap feather lead lag lifestyle' 😂

Fascinating

挥舞铰、摆振铰和变距铰

Great work!

To much complicated, to much dangereous. Find a better way!

Engineering at its finest ❤