---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Thu 02/28/19: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:29 AM - Grounding to tube frame structures (John Hulls) 2. 07:18 AM - Re: Grounding to tube frame structures (Robert L. Nuckolls, III) 3. 08:46 AM - Re: Static Wicks - Bonding of Flight Controls (Robert L. Nuckolls, III) 4. 04:34 PM - Re: Static Wicks - Bonding of Flight Controls (jsajpf) ________________________________ Message 1 _____________________________________ Time: 06:29:38 AM PST US From: John Hulls Subject: AeroElectric-List: Grounding to tube frame structures What is the best method to ground a battery located behind the baggage compartment to a frame tube in a fabric covered aircraft? ________________________________ Message 2 _____________________________________ Time: 07:18:39 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Grounding to tube frame structures At 08:28 AM 2/28/2019, you wrote: > >What is the best method to ground a battery located behind the >baggage compartment to a frame tube in a fabric covered aircraft? You would like to have a gas-tight connection to structure . . . ideally a welded bolt- tab to accept the battery(-) lead. Is the airplane already covered? If not, adding the tab should be a relatively simple task. Bob . . . ________________________________ Message 3 _____________________________________ Time: 08:46:36 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Static Wicks - Bonding of Flight Controls At 10:21 PM 2/27/2019, you wrote: > > >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. Selecting style, number and placement of static wicks on a TC aircraft is an arduous task made possible by a survey of the ship's natural streamer locations . . . which may or may NOT be in the same locations for similar aircraft. We used to bolt static wicks to some models at Cessna . . . as I recall it was a kit that a customer could order. But I'm 99% sure there were no electro-static survey tools used to optimize the location of wicks much less confirm their efficacy. >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. Then I wouldn't worry about it. P-static issues are rare in the OBAM aircraft world. We just don't spend much time cruising at 300 knots through rain, snow or ice crystals. >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?! I wouldn't bolt any hardware to the airplane until experience suggests it might fix a demonstrated difficulty. Bob . . . ________________________________ Message 4 _____________________________________ Time: 04:34:39 PM PST US Subject: AeroElectric-List: Re: Static Wicks - Bonding of Flight Controls From: "jsajpf" Sounds like wisdom to me Bob. Thanks for the response! John Read this topic online here: http://forums.matronics.com/viewtopic.php?p=487869#487869 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.