FUSELAGE, VEHICLE ARM, ROTOR ASSEMBLY, AIRFRAME, AND MULTI-ROTOR UNMANNED AERIAL VEHICLE

An airframe, comprising: a fuselage (10), a flight control system, a quick disassembly mechanism (30), and multiple vehicle arms (20). The fuselage (10) has multiple mounting portions (101); the flight control system is mounted in the fuselage (10); the multiple vehicle arms (20) are radially provided around the fuselage (10), and at least part of the vehicle arms (20) is detachably connected to the mounting portion (101) of the fuselage (10) by means of the quick disassembly mechanism (30); when the vehicle arm (20) is connected to the fuselage (10), the vehicle arm (20) is further electrically connected to the flight control system; the flight control system controls, according to the number of vehicle arms connected to the fuselage (10), the flight control system to output a corresponding preset power mode. The airframe can adapt to different application scenarios by increasing or decreasing the number of vehicle arms connected to the fuselage, and the flight control system can match a corresponding power