An aircraft electrostatic discharger radio frequency discharge noise test device and method

Abstract

The invention relates to a radio frequency discharge noise test device and method of an aircraft electrostatic discharger. The device and method for the radio frequency discharge noise test of an aircraft electrostatic discharger include a bracket, a DC program-controlled high-voltage power supply arranged on the bracket, a structure capacitor, a high-voltage cable, a fixed specimen bottom plate, a direct-reading microammeter, an equivalent load, and a Shaft cable, radio frequency noise true and effective measurement controller, optical fiber, grounding bus bar and base, telescopic mechanism connected to the base, adjustment mechanism in the telescopic mechanism, bracket connected to the top of the telescopic mechanism, connected to the bracket The noise receiving electrode and the high voltage electrode, the specimen electrode connected to the fixed specimen bottom plate, and several universal wheels connected to the bottom of the support; the present invention adopts the method of remote control, equivalent load, and broadband gain amplification to effectively realize the The reliable and stable discharge of aircraft electrostatic discharger meets the requirements of high-frequency communication systems and instruments for accurate signal power detection of radio frequency discharge.

Description

technical field [0001] The invention belongs to the technical field of aircraft electrostatic protection, and in particular relates to an aircraft electrostatic discharger radio frequency discharge noise test device and method. Background technique [0002] During the flight of the aircraft, the surface of the aircraft collides with particles of dust, ice crystals, rain, and other substances. Continuous collisions will cause electric charges to be separated from the particles and transferred to the aircraft, resulting in a large potential at the tip of the aircraft. Electrostatic discharge occurs when the tip accumulates more than a certain amount of charge, creating an excessive potential difference with the charged cloud in the surrounding air. In addition, when the plane is refueling in the air, since the two planes are charged separately, the potential difference between the two planes due to static electricity may reach 300kV. The wide-spectrum electromagnetic fields g...

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Problems solved by technology

Relevant standards stipulate that when the aircraft electrostatic discharger is discharged with a current of 50 microamperes, the total radio frequency noise voltage (root mean square (rms) value) generated and coupled by the discharger should be at least 40dB (trailing edge type) or 30dB (wing type). Point type) attenuation. In the traditional measurement method, multiple measuring instruments and equipment combinations are used for testing, which requires high skill level of testers and strict requirements for shielding test sites. The operation is cumbersome, time-consuming and labor-intensive, and it is easy to cause measurement errors. In addition, the high-voltage electrodes and noise receiving electrodes in the measuring instruments mostly use hemispherical copper shells with a diameter of 250mm and hemispherical copper shells with a diameter of 500mm. Adjustment with support, not only the workload is heavy, the accuracy is poor, and if there is residual electricity in the electrode, it is easy to cause damage to the staff, and the safety is also poor

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