The invention provides a modularization fast-disassembly type unmanned helicopter, which comprises a
fuselage module, an undercarriage module, a
tail transmission module and a connecting mechanism. The
fuselage module comprises a
fuselage shell, a main rotor, an engine, a main transmission and an
oil tank; the undercarriage module comprises a slide and supporting legs; the
tail transmission modulecomprises a
tail shell, a middle transmission, a direction steering engine, a tail transmission and a
tail rotor; the fuselage module, the undercarriage module and the tail transmission module are connected through the connecting mechanism; the connecting mechanism comprises a fuselage side plate, a tail side plate, a fast-
assembly pin and a fast-
assembly lock; the fuselage module is connected with the undercarriage module through the fast-
assembly pin; the fuselage module is connected with the tail transmission module through the fast-assembly lock. According to the modularization fast-disassembly type unmanned helicopter provided by the invention, the functional structures are modularly decomposed and adopt standardized module connecting interfaces, so that the maintenance cost and theoverhaul difficulty for the use of the unmanned helicopter are reduced, the modules are broken into parts so as to be convenient to
package, transport and store, the installation can be carried out conveniently, the working efficiency is improved, and the cost is reduced.