Effects of Laboratory Simulated Precipitation Static Electricity and Swept Stroke Lightning on Aircraft Windshield Subsystems.

摘要

Candidate outer ply materials for aircraft windshields subjected to laboratory simulated static electric charging and swept stroke lightning tests are evaluated. Very high values of static charge can accumulate on the outer insulating surface of a windshield. Electrical discharging can occur, usually in the form of surface flashing. The discharge generates electrical transients which might cause electromagnetic interference and damage to electrical components, depending on the system and component design. Methods of generating the electrostatic charge for test purposes and the control and evaluation of the discharges are covered. Potential damage to aircraft windshields from swept stroke lightning is evaluated by subjecting test specimens to man-made lightning. Recommendations are included which should enable the design of windshield systems that are more immune to the effects of precipitation static charging and swept stroke lightning. A study of the effects of nuclear electromagnetic pulse (EMP) in windshield design was added to the contract, with the results included in an appendix to this report. (Author)