A Method for Measuring Rotation Clearance of Tilting Rudder
A technology of inclined direction and rotation gap, which is applied in the direction of measuring devices, instruments, etc., can solve the problems of difficult to achieve high-precision angle measurement, high cost of integrated manufacturing of measuring equipment, and inconvenient installation. It can achieve fast reading, strong anti-interference ability, The effect of reducing labor intensity
Active Publication Date: 2017-11-21
CHENGDU AIRCRAFT DESIGN INST OF AVIATION IND CORP OF CHINA
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Problems solved by technology
The advantage of the three-axis inclinometer based on the gyro principle is that the angle can be obtained directly, and the installation position of the sensor on the rudder surface is not limited. However, due to the inherent drift of the gyro, it is difficult to achieve high-precision angle measurement, and the integrated manufacturing cost of the measurement equipment is high. ; It is inconvenient to install using a linear displacement sensor, and there are high requirements for the sensor installation position and installation reference
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[0057] Taking the measurement of the rotation clearance of a tilted rudder of an aircraft as an example by using the present invention, the measurement operation steps are:
[0058] a. Adjust the level of the aircraft so that the wings 6 are located in the horizontal plane, and the tilt rudder 8 is locked in the neutral position;
[0059] b. Paste the dual-axis inclination sensor 1 on the outer surface of the tilt rudder 8, and make the x measurement axis of the dual-axis tilt sensor 1 parallel to the fuselage axis, and the y measurement axis in the chord plane of the tilt rudder 8, and place the x measurement axis Set the measurement channel to zero;
[0060] c. See attached figure 1 , use the first wire rope 41, the second wire rope 42 to connect the rudder surface clamping plate 2, the rudder surface loading device 3 and the load cell 5, so that the loading direction is kept perpendicular to the chord plane of the inclined vertical tail 7;
[0061] d. Adjust the rudder s...
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The invention belongs to the field of aircraft ground tests, and particularly relates to a method for measuring the rotating clearance of an inclined rudder. The method comprises the steps of fixing an inclination sensor on a rudder located at a neutral maintaining position, enabling one of the measurement axes to be located in a horizontal plane and parallel to an axis of an aircraft body, carrying out positive loading and negative loading on the rudder by using a control surface loading device, solving a rotation angle of a measurement point relative to a rotating shaft of the control surface according to an output result of the corresponding measurement axis of the sensor, drawing a rotation angle-load curve of the positive and negative loading, carrying out fitting on linear segments of the curve, and fitting intercept difference of extension lines of the curve on the vertical coordinate, wherein the intercept difference is the rotation clearance of the rudder. According to the invention, measurement with low cost and high precision for the rotation clearance of the inclined rudder can be realized, and the labor intensity in measurement for the rotation clearance of the rudder can be greatly reduced.
Description
technical field [0001] The invention belongs to the field of measuring the rotation gap of an aircraft rudder surface, and in particular relates to a method for measuring the rotation gap of an inclined rudder. Background technique [0002] Due to the errors in the manufacturing and assembly of aircraft parts, there will be rotation gaps on the rudder surface after accumulation. When the rotation gap exceeds the standard, it will not only affect the control accuracy and flight quality of the aircraft, but also induce flutter and cause disasters in severe cases. Therefore, the rotation clearance of the rudder surface must be strictly controlled during the aircraft development process. According to the requirements of the national military standard, the rotation clearance of the aircraft's outer aileron and full-motion vertical tail (or canard) should not exceed 0.13° and 0.034° respectively. The measurement accuracy of the rotation clearance of the tail (or canard) should re...
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IPC IPC(8): G01B21/16
CPCG01B21/16
Inventor 赵同钢房元鹏王垚欧政梁向民魏太水
Owner CHENGDU AIRCRAFT DESIGN INST OF AVIATION IND CORP OF CHINA