Patent ID: 6575405
Filing Date: 2003-06-10
Classification: B64C,F15B

Abstract:
A control method for controlling a tiltable truck of a main landing gear of an aircraft so that the main landing gear can function as a semi-levered gear during certain prescribed conditions, the control method comprising:providing a fluid-operated auxiliary strut connected between a bogie beam of the truck and a main strut of the landing gear, a lower end of the main strut being pivotally connected to the bogie beam at a main pivot and the auxiliary strut being connected to the bogie beam at a location spaced along the bogie beam from the main pivot, the auxiliary strut being operable to lock up upon receipt of a lock-up command signal such that a length of the auxiliary strut is fixed at a predetermined length; detecting when the aircraft is in a takeoff roll; and if the aircraft is detected as being in a takeoff roll, issuing a lock-up command signal to the auxiliary strut so as to lock up the strut at the predetermined length and cause the main landing gear to function as a semi-levered gear.