Unmanned aerial vehicle, flight control mechanism for unmanned aerial vehicle, and method for using unmanned aerial vehicle and mechanism for unmanned aerial vehicle

An unmanned aerial vehicle comprising two or more flight control mechanisms, each flight control mechanism comprising:

• a first preceding impactor;
• a second preceding impactor;
• and
• a holder which holds the first and the second preceding impactors with a distance above a vehicle body of the unmanned aerial vehicle, wherein the holder can be inclined with respect to the vehicle body by rotating toward the lateral side of the vehicle body around a predetermined position in the vehicle body or on the vehicle body, and the holder rotates responsive to one of the first and the second preceding impactors colliding with a boundary surface, wherein the first and the second preceding impactors are positioned on one said holder and on a line apart from each other in a direction of a width of the vehicle body, where the holder is configured to rotate by an acting force from the boundary surface responsive to one of the first and the second preceding impactors colliding with the boundary surface and both of the first and the second preceding impactors touch the boundary surface according to ascension of the vehicle body,
• wherein the two or more flight control mechanisms are apart from each other in front and behind in a direction different from a direction of a rotation toward the lateral side of the vehicle body at the holder;
• wherein the vehicle body comprises fixed shaft sections for the holders each of which are separately from each other and corresponds to each of the holders in the two or more flight control mechanisms;
• wherein each of the holders are rotatably attached to the vehicle body with the corresponding shaft section for the holder used as a rotation axis so that each of the holders can rotate independently of each other;
• wherein the unmanned aerial vehicle is configured to fly along the boundary surface by flying with the first and the second preceding impactors of the respective flight control mechanisms touching the boundary surface.