Coaxial twin rotor thrust vector unmanned aerial vehicle

Abstract

The invention discloses a coaxial double-rotor thrust vector unmanned aerial vehicle, which comprises an upper fuselage and a lower fuselage. The upper fuselage is provided with a coaxial motor and atwo-axis universal joint; The output shaft of the coaxial motor protrudes out of the top of the upper fuselage, and the output shaft is provided with a coaxial double rotor; The two-axis universal joint comprises a fixed frame and a movable frame, wherein the movable frame is hinged on the fixed frame, a first power mechanism for controlling the motion of the movable frame is arranged in the fixedframe, a coaxial motor is hinged on the movable frame, a second power mechanism for controlling the motion of the coaxial motor is arranged in the movable frame, and the two-axis universal joint is assembled in the upper fuselage through the fixed frame; The lower fuselage is coaxially connected to the bottom of the upper fuselage. The pitch and roll control torques are generated by changing thethrust vector direction of the coaxial motor through the two-axis universal joint. A two-axis universal joint is used to replace the period commonly used in traditional coaxial rotor aircraft. The high-speed rotating parts such as the tilting disk are omitted by using the integrated variable-distance structure, which reduces the structural complexity and improves the reliability.

Description

technical field [0001] The invention belongs to the technical field of aviation, and in particular relates to a coaxial double-rotor thrust vector unmanned aerial vehicle. Background technique [0002] Unmanned aircraft, referred to as UAV, is an unmanned aircraft controlled by radio remote control equipment and its own program control device. It was mostly used in military affairs at first. However, with the progress of society and the development of economy, unmanned aerial vehicles are also widely used in civilian use. With the gradual development of the industry, people have developed a variety of drones. The traditional rotor UAV technology is relatively mature, and it can also be realized in the same way. However, in order to balance the torque, the design of the tail rotor drive needs to be complicated and heavy, which increases the unloaded mass. Although the coaxial dual-rotor UAV has got rid of the requirement for the tail rotor, it needs to set up a cycle-collec...

AI Technical Summary

Problems solved by technology

The traditional rotor UAV technology is relatively mature, and it can also be realized by using it. However, in order to balance the torque, the design of the tail rotor drive needs to be complicated and heavy, which increases the unloaded mass.

Although the coaxial dual-rotor UAV has got rid of the requirement for the tail rotor, it needs to set up a cycle-collective variable pitch (CCPM) structure, and needs to use high-speed rotating components such as swashplates. The internal structure is complex and the reliability is poor.

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