Flutter data processing framework based on flight test

Abstract

The invention belongs to the technical field of aviation test flight, and particularly relates to a flutter data processing framework based on a flight test. The flutter data processing framework based on the flight test comprises a platform management system, a basic function module, an auxiliary function module and a bottom layer supporting module; the platform management system is used for resource dispatch and operational process management of a platform, the basic function module is used for processing data of a general flutter flight test, the auxiliary function module is used for analyzing flutter test flight data which are specific or are not provided with a currently established clear data processing technology system, the bottom layer supporting module is used for providing a basic environment supporting normal operation of the platform and basic software shared by each function module of the platform. The flutter flight test data processing platform concept and a top layer design framework are primarily raised, a plurality of layers such as a flight test mode, an incentive mode, the observation signal property, a processing mode, a processing task, a processing method and the like are projected in one unified framework, and therefore tradition, modernization, existence and development are coordinated in a higher level.

Description

technical field [0001] The invention belongs to the technical field of aviation test flight, and in particular relates to a flutter data processing framework based on flight test. Background technique [0002] Flutter is a self-excited vibration of an elastic structure under the interaction of aerodynamic, inertial, and elastic forces. Due to the interdisciplinary characteristics of flutter and the incompleteness of current related theories, related experiments and data analysis techniques have become the ultimate means to define the quality of aircraft flutter. Generally speaking, new aircraft or aircraft with improved structure (configuration) need to carry out corresponding flutter tests. It is an internationally recognized category I risk test flight subject due to its long-term characteristics. [0003] Data processing is one of the key links in aircraft flutter test technology and an important technical means to obtain test conclusions. It plays a very important role...

AI Technical Summary

Problems solved by technology

In view of the non-repeatability of the excitation, testing, telemetry, recording and flight conditions during the flutter flight test, almost strict requirements are put forward for the corresponding data processing method and implementation technology, which will affect the accuracy of the test conclusion

[0004] Flutter flight test has the characteristics of high risk, long period and high economic cost

Due to problems such as insufficient excitation force, limited measurement points, complex test conditions, and harsh test conditions in this type of test, the quality of the actual measured test data is low, often resulting in low signal-to-noise ratio, short effective samples, and structural modal problems. Poor stability and other phenomena, thus greatly increasing the technical difficulty of flutter flight test data processing

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