Automatic variable control surface speed reducing mechanism with feedback for pneumatic test

Abstract

The invention discloses an automatic control surface changing speed reducing mechanism with feedback for a pneumatic test. Two cover plates in the mechanism respectively form a mounting cavity which is through up and down on the front and rear surfaces of the left and right supports; a shifting fork is mounted in the cavity through a rotating shaft; the upper end of the shifting fork is matched with a nut on a screw rod; the tail end of the shifting fork is matched with a ball socket of a spherical push rod through a ball head, the lower end of the spherical push rod is connected with a control surface mounting base through a movable shaft, the control surface mounting base is movably connected to the lower ends of the left support and the right support through a fixed shaft, and the center of the ball head is located between the center of the movable shaft and the center of the fixed shaft. A motor drives the screw rod to rotate forwardly and reversely, the nut linearly moves along the screw rod and drives the shifting fork to rotate forwardly and reversely around the rotating shaft, the lower end of the shifting fork drives the spherical push rod to push and pull the control surface mounting base, and the control surface mounting base angularly deflects around the fixed shaft. According to the invention, the conversion from high rotating speed and low torque to low rotating speed and high torque of the motor in a variable-control-surface steering engine can be realized in a limited space.

Description

technical field [0001] The invention relates to an automatic variable rudder surface deceleration mechanism with feedback for aerodynamic tests, which belongs to the technical field of aerospace aerodynamics. Background technique [0002] The wind tunnel test is based on the principle of relativity of motion. The model or object of the aircraft is fixed in the artificial environment on the ground, and the air flow is artificially created to simulate various complex flight states in the air to obtain test data. [0003] During the wind tunnel test, the model wing needs to stay at different angles for a certain period of time according to the set procedure to carry out the blowing test. Most of the existing pneumatic test rooms are manually operated by workers, and the efficiency is low. Some aerodynamic tests are carried out in a sealed cabin. Every time an angle is changed, workers need to release the pressure before entering the test cabin to operate the wing angle. After ...

AI Technical Summary

Problems solved by technology

Some aerodynamic tests are carried out in a sealed cabin. Every time an angle is changed, workers need to release the pressure before entering the test cabin to operate the wing angle. After adjustment, they need to re-press. The process is very resource-intensive and time-consuming, so it is urgent An automatic variable rudder mechanism is needed to automatically adjust the wing angle, and the automatic variable rudder mechanism realizes the conversion of the high speed and low torque of the motor in the variable rudder steering gear to the low speed and high torque within the limited space of wing thickness. Difficulties that urgently need to be overcome

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