Multi -rotor aircraft

The utility model provides a multi -rotor aircraft, wherein, multi -rotor aircraft includes: inject the casing of cavity, a plurality of power arms, a plurality of flexible components, every flexible component is configured as and is coupled casing and a power arm are and allow the power arm removes between position and the release position accomodating accomodate the position, the power arm is held at least in part in the casing, and release position, the power arm is shifted out by at least part the casing, wherein, every flexible component includes: fixed pipe, it is fixed in the casing, and movable pipe, movable pipe matches each other with fixed pipe that ground is nested to make together movable pipe can be followed the axial displacement of fixed pipe, the one end of movable pipe is coupled in a power arm regularly, thereby drives the power arm is in accomodate the position with remove between the release position. The application provides a multi -rotor aircraft performance is excellent. 本申请提供种多旋翼飞行器，