Novel full aircraft high-strength irradiation test method

Abstract

The invention discloses a completely new full aircraft high-strength irradiation HIRF test method. Based on an electromagnetic effect produced to an aircraft by an external electromagnetic environment and response of functional performance of the aircraft to electromagnetic stress, the invention provides a method for determining equivalent effect and response produced by the aircraft to different external electromagnetic stresses; a plurality of wires surrounding the surface of the aircraft are used as a sensor to actually measure induction current of the current on the surface of a shell of the aircraft in a loop under a low-level irradiation field; then the induction current corresponding to a high-level irradiation field is extrapolated by using linear relation between high level and low level; an equivalent amount of the induction current obtained by the extrapolation is injected into the loop to produce the same surface induction current distribution as the irradiation field on the aircraft shell; and the aircraft is kept under the equivalent electromagnetic stress to finish high-strength irradiation test. In the method, the field is substituted by a path, and an electromagnetic irradiation coupling mode is substituted by an injection current coupling mode, so that the test efficiency is obviously increased, and the test expense is reduced.

Description

technical field [0001] The invention belongs to the field of electromagnetic compatibility test, and in particular relates to a new method for high-intensity irradiation test of the whole aircraft, that is, the loop current injection technology on the surface of the aircraft. Background technique [0002] In the predetermined external electromagnetic environment, the aircraft must be able to work normally with full performance. Therefore, it is required to carry out high-intensity electromagnetic radiation tests on the whole aircraft during the process of aircraft development and finalization to verify its compliance. But the current actual situation is that there are no engineering facilities that can fully carry out such tests. [0003] In the high-intensity irradiation test of the whole aircraft, the traditional test method is to uniformly irradiate the aircraft with the RF energy output by the broadband high-power amplifier HPA through the antenna in the form of free-sp...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the technical, economic and safety problems that are difficult to overcome in the high-intensity irradiation test of the existing aircraft, such as high cost of test stress, limited operation of the test piece, poor test result repeatability, and low cost-effectiveness ratio of the test , the purpose of the present invention is to provide a new type of high-intensity irradiation test method for the whole aircraft with strong operability, so that the test can be carried out in engineering, and the test efficiency can be improved and the cost can be reduced.