jsajpf
Joined: 21 Feb 2019
Posts: 8
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 Posted: Wed Feb 27, 2019 8:21 pm Post subject: Static Wicks - Bonding of Flight Controls |
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Bob (et al),
Looking for insight into legacy Type Certificated airplane design rationale for installing static wicks and bonding jumpers between fixed structure and movable flight control surfaces.
Several E/AB designs do not specify installation of static wicks nor bonding jumpers for flight control surfaces. The particular design I plan to build is among this group and reports from those with years flying the design are (albeit a limited number of respondents): no issues with P-static and the like.
I cannot attest to the types of operations, nor how frequent the exposure to conditions conducive to P-Static interference, for the respondents to my query.
Looking for input from TC house folks (Bob) regarding rules of thumb, design standards, etc. regarding incorporation of static wicks and bonding??
My experience with the subject matter is as a maintainer, troubleshooting reports of symptoms of P-Static while in visible moisture, required inspections after a lightning strike, routine verification (inspections) of electrode-to-surface bonding values, etc. Correction of broken or degraded control surface bonding cured the majority of reported faults. Some degraded antenna bonds are among the mix as well. Design standards applicable to mitigating P-Static trouble are not clear to me and my understanding of design criteria/recommendations is admittedly academic (at best).
What say ye, the sage?!
John
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