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</head><body>Scott, my experience with flying stabs has been with gliders and an Old Timer (a V-Tail Swallow) rather than a Pattern application, but I've been surprised at how much throw it takes.<br>Can't quote degrees, but in every case the trailing edge needs to go up about the same distance, in inches, as a conventional elevator would.<br>For example, if the needed elevator throw was 1/2", then the trailing edge of the stab would need to move 1/2" for the same effect.<br>Looks like a lot, but seems to work.<br><br>Scott McNickle<br><br>
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On September 26, 2019 at 12:29 PM Scott McHarg via NSRCA-discussion <nsrca-discussion@lists.nsrca.org> wrote:
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Howdy,
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I'm looking for a little advice on a full flying stab. I'm teaching an Aerospace Senior Capstone Design class at Texas A&M and one of my students' teams is scratch building a plane based on a supersonic business jet in sub-scale utilizing an EDF. That part isn't really part of the equation but wanted you to understand what they're doing.
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The team has figured out the design and mechanical connections which I have approved but we are needing an idea of how much travel the stab needs. I understand that there are many variables including size of the stab, CG, AC, etc. but I'm looking to give them a place to start. I was thinking of the Bi-Side and wondering if someone could give me, in degrees, the amount of travel for the stab so that we have a starting point. I'm sure I'll have fun with the maiden but, hopefully, we will be in the ballpark.
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Thanks!
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Scott
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<b style="color: rgb(153,153,230);"><font style="font-family: comic sans ms,sans-serif;" size="4">Scott A. McHarg</font></b>
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Takeoff is optional. Landing is mandatory!
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