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<p class="MsoNormal">I agree on a pattern airplane (I have two BiSides with flying stabs—anybody want one?) as you have the advantage of forced airflow over the stab, but on an F4 twin 70 EDF, I run out of elevator on low rate at around 20 with flaps and slats
on landing. Maybe run 10-13 on low, but have some significant reserve on high, like 25+ and maybe 14-22 mid range for maneuvering speeds. Sounds like a fun project!</p>
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<p class="MsoNormal">Richard Strickland</p>
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<p class="MsoNormal">Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> NSRCA-discussion <nsrca-discussion-bounces@lists.nsrca.org> on behalf of John Decker via NSRCA-discussion <nsrca-discussion@lists.nsrca.org><br>
<b>Sent:</b> Thursday, September 26, 2019 11:49:19 AM<br>
<b>To:</b> General pattern discussion <nsrca-discussion@lists.nsrca.org>; Scott McHarg <scmcharg@gmail.com><br>
<b>Subject:</b> Re: [NSRCA-discussion] Flying stab travel</font>
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<div dir="ltr" data-setdir="false">Scott, </div>
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<div dir="ltr" data-setdir="false">Normally, I set elevators at 10 degrees to 12 degrees for maiden. When I had a Nuance with a full flying stab it was so responsive I had it dialed down to 8 degrees by the time I had it trimmed out. And I found the radii could
get sharp pretty fast so I had about 20% more expo programmed as well. Definitely more surface area makes a big difference. The nice thing is that once initial incidence is set, you adjust using elevator trim rather than incidence adjusters.</div>
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<div dir="ltr" data-setdir="false">Hope that helps,</div>
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<div dir="ltr" data-setdir="false">John</div>
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<div>On Thursday, September 26, 2019, 11:29:40 AM CDT, Scott McHarg via NSRCA-discussion <nsrca-discussion@lists.nsrca.org> wrote:
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<div class="ydp7f9f35f4yiv2418237503gmail_default" style="font-family:georgia, serif;color:rgb(153,153,230);">
Howdy,</div>
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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.</div>
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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.</div>
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Thanks!</div>
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Scott</div>
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<div dir="ltr"><b style="color:rgb(153,153,230);"><font style="font-family:comic sans ms, sans-serif;" size="4">Scott A. McHarg</font></b></div>
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<div>Takeoff is optional. Landing is mandatory!</div>
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