Human feet and toes provide a mechanism for changing the gear ratio of the ankle extensor muscles during a running step. A variable gear ratio could enhance muscle performance during constant-speed running by applying a more effective prestretch during landing, while maintaining the muscles near the high-efficiency or high-power portion of the force-velocity curve during takeoff. Furthermore, d...

Formal specifications are widely used in the development of safety critical systems, as the Sensor Voting Module of the Landing Gear System. However, the conformance relationship between the formal specification and the concrete implementation must be checked. In this paper, we show a technique to formally link a Java class with its Abstract State Machine formal specification, and two approache...

A hybrid approach is used to investigate the noise generated by a simplified landing gear without small scale parts such as hydraulic lines and fasteners. The Ffowcs Williams and Hawkings equation is used to predict the noise at far-field observer locations from flow data provided by an unsteady computational fluid dynamics calculation. A simulation with 13 million grid points has been complete...

The landing gear of an aircraft serves to mitigate the vibration and impact forces transmitted from ground fuselage. This paper addresses magneto-rheological (MR) damper gear, which provides high shock absorption efficiency excellent stability in various conditions by adjusting damping force using external magnetic field intensity. performance MR was verified through numerical simulations drop ...

guidance and control of aircraft in the landing phase imposes extra pilot work loads, hence application of automatic landing control systems is of great importance. in this study automatic landing control systems are introduced and an optimal landing control system is designed. the control system performance criteria are based on minimum control effort. the designed system is simulated for a tr...

Weight-on-Wheels (WoW) systems are aimed at indicating if the aircraft weight is loading onto landing gear and its wheels, even partially. These an integral part of actuation system for safety-critical applications shall provide reliable information on actual operational status LG. That reveals vehicle in flight or ground. In this way, several kinds accidents may be prevented, relating instance...