A pilot relief valve is presented for valve-controlled semi-active damper, its working process is analyzed in detail, and its method of controlling oil flow is pointed out. Faced with the situation ...

US investigators have attributed a Red Air Boeing MD-82's main landing-gear collapse and runway excursion to ineffective shimmy dampening during roll-out, after the jet touched down in Miami.

Regarding to the phenomenon that the throttle valve plate was impacted and failed during the test of the damping valve, the reason was analyzed through the water hammer theory, and the physical model ...