Abstract: The purpose of the present invention is to provide a flight control mechanism for controlling flight of an unmanned aerial vehicle by controlling collision between the vehicle and a boundary surface, an unmanned aerial vehicle equipped with the mechanism, and a method for using the mechanism and the vehicle. Provided is a flight control mechanism for an unmanned aerial vehicle including: a first initial collision member; a second initial collision member; and a holding member that holds the first and second initial collision members with a space therebetween above the body of the unmanned aerial vehicle, is tiltable with respect to the vehicle body by rotating about a predetermined position inside or above the vehicle body toward the side of the vehicle body, and rotates in response to collision between the first or second initial collision member and a boundary surface.

Abstract: Provided is an unmanned aircraft which is capable of stably taking off. In one example, the unmanned aircraft has an aircraft body which includes an information acquisition device, a plurality of rotary wings, and a protective member disposed around the rotary wings. Each of the rotary wings has a rotation axis which is tilted with respect to a vertical direction by a given angle, such that the rotary wings generate a forward thrust force. The aircraft body has a lower edge which includes a middle lower edge and a forward lower edge, wherein the protective member has a lower edge including the forward lower edge. The forward lower edge is located above the middle lower edge, and the forward lower edge has a rear end located backward of a rear end of the rotary wing.

Abstract: [Problem to be Solved] The object is to provide a device, a method and the like which, when a fault occurs, particularly when a fault occurs in an operation of some of rotary wings, can control a flight depending on the fault, or which can be at least used for control when a fault occurs, or which can detect the fault.

Abstract: Provided are a device configuration, method, etc. for performing imaging investigation in an investigation space using an unmanned aerial vehicle. A system includes: a flight start platform; the vehicle which is connected to a line-type member and equipped with an investigation camera, a travel-direction imaging camera, and a vehicle-side communication unit; an external control device which is equipped with a display unit and an external control device-side communication unit, and which receives the travel-direction image data through the external control device-side communication unit, receives an input of control commands for the vehicle while having a video or still image obtained from the travel-direction image data displayed on the display unit, and transmits a signal indicating the control commands from the external control device-side communication unit; and an attraction device which is connected to the line-type member and attracts the vehicle.