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 ...

One of the weaknesses multi-rotor unmanned aerial vehicles (UAVs) or vertical take-off and landing aircraft is that they need a flat surface to make safe landing. In order reduce impact this weakness, it inevitable add systems will give UAV some additional capabilities related capability. study, four-arm adaptive gear designed kinematically analyzed for UAV. The adaptability feature achieved by...

This research explains airplane model with two vertical vibrations for airframe and landing gear system. The purpose of this work is to advance vibrational model for study of adjustable vibration absorber and to plan Proportional-Integration-Derivative approach for adapting semi active control force. The coefficients of this method are modified as stated by Bee multiobjective optimization using...

The NASA goal of reducing external aircraft noise by 10 dB in the near-term presents the acoustics community with an enormous challenge. This report identifies technologies with the greatest potential to reduce airframe noise. Acoustic and aerodynamic effects will be discussed, along with the likelihood of industry accepting and implementing the different technologies. We investigate the lower ...