Method for generating aircraft operating characteristic curve

Abstract

The invention discloses a method for generating an aircraft operating characteristic curve, and belongs to the technical field of aeronautical engineering testing. The method comprises a first step ofperforming data smoothing or digital filtering processing on an original recorded time series operating force data set and a corresponding operating displacement measurement data set; a second step of extracting slope varied data segment points in the measurement data series; a third step of segmenting measurement data according to the data segment points extracted in the second step, fitting themeasurement data of each segment by using a least-squares method to obtain the slope kj and intercept bj of the segment of straight line, and using Lj(Kj,bj) for denoting the j-th straight line; anda fourth step of calculating a point of intersection Rj(xj,fj) of the adjacent two straight lines Lj(kj,bj) and Lj-1(kj-1,bj-1) until the calculation of the points of intersection of all the straightlines is completed and the points of intersection of all the straight lines are obtained, and connecting the points of intersection of the straight lines in sequence to obtain an operating characteristic curve composed of the plurality of straight lines. The method of the invention is not subject to the subjective will of the test personnel, and the fitting effect is good.

Description

technical field [0001] The invention belongs to the technical field of aeronautical engineering testing, and in particular relates to a method for generating an aircraft handling characteristic curve. Background technique [0002] In the design, development, production or maintenance of aircraft, it is often necessary to measure the handling characteristics of the aircraft and generate graphic curves, such as measuring the stick force-stick displacement characteristics of the fighter controlled by the control stick, generating the stick force-stick displacement characteristic curve, measuring the foot Pedal force-pedal displacement characteristic, generate pedal force-pedal displacement characteristic curve; and for the transport aircraft operated by steering wheel (column), measure its disc force-disk displacement characteristic, generate disc force-disk displacement characteristic curve, or Measure its column force-column displacement characteristic to generate a column fo...

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Problems solved by technology

The above evaluation is affected by the subjective will of the test personnel such as engineering experience and theoretical level, resulting in large random differences in the evaluation, and different test personnel often come to different conclusions

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