Hanging type coaxial contrarotating rotor wing testing device

Abstract

The invention relates to the technical field of helicopter comprehensive tests, and discloses a hanging type coaxial contrarotating rotor wing testing device. The hanging type coaxial contrarotating rotor wing testing device comprises a lifting platform, a lower base, an upper base, a motor, an upper rotor wing speed changer, a lower rotor wing speed changer, an upper rotor wing unit, a lower rotor wing unit, an upper rotor wing measuring unit and a lower rotor wing measuring unit, wherein the lifting platform is arranged on a bracket in a mode of being capable of sliding up and down, the lower base is arranged on the lifting platform, the upper base is connected with the bracket and located above the lower base, the motor is arranged on the lower base, the upper rotor ring speed changer and the upper rotor wing speed changer are connected with the motor, the upper rotor wing unit and the lower rotor wing unit are coaxially arranged. Both the upper rotor wing unit and the lower rotor wing unit comprise a rotor wing shaft, a rotor wing arranged in the rotor wing shaft and a rotor wing manipulating assembly connected with the rotor wing. Both the upper rotor wing measuring unit and the lower rotor wing measuring unit comprise a torque balance which is connected with the speed changer and the rotor wing shaft and a rotor wing balance which is connected with the rotor wing manipulating assembly. According to the invention, the upper rotor wing and the lower rotor wing are separated and respectively equipped with the measuring unit, a force, the bending moment and the torque of each rotor wing can be measured independently, and the space between the upper rotor wing and the lower rotor wing can be adjusted, thereby being capable of effectively evaluating the performance of each rotor wing and studying aerodynamic characteristics of each rotor wing.

Description

technical field [0001] The invention relates to the technical field of helicopter comprehensive tests, in particular to a hanging type coaxial reversing double-rotor test device. Background technique [0002] The working principle of the coaxial dual-rotor helicopter is to rely on the coaxial rotation of the upper and lower rotors to provide lift and balance the anti-torque. Compared with the helicopter with a single rotor and a tail rotor, its advantage is that the tail rotor is omitted, the power consumption is reduced, and the structure It is compact, has high safety, and can provide greater lift, with greater pitch and roll control moment, and stronger maneuverability. Therefore, coaxial twin-rotor helicopters are widely used in shipboard helicopters and high-speed helicopters. [0003] Since the upper and lower rotors of the coaxial dual-rotor helicopter are coaxially reversed, the flow field is unsteady no matter in the state of hovering or forward flight, and because...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the problem of how to separately measure and evaluate the performance of the two rotors of the coaxial dual-rotor helicopter

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