DroneGear: A Novel Robotic Landing Gear With Embedded Optical Torque Sensors for Safe Multicopter Landing on an Uneven Surface.

One of the most serious disadvantages of the vertical takeoff and landing flying robots including multicopters is the necessity of the flat stable area for safe landing. The ability to land and takeoff from uneven surfaces and moving basements would help the rotorcrafts in many important applications. The special landing gears are used to provide rotorcrafts this ability. This letter explores mult...