the spoilerons decrease the apparent AOA of the wing, in essence giving the wings "washout" effect. If I remember correctly, at the same speed there is actually less flow separation with the spoilerons activated, despite the decrease in total lift. The effective wing loading increases (relative to the amount of lift generated), but the wing is simultaneously resistant to tipstalling and the plane's ability to penetrate increases. Perhaps the decrease in chordwise flow separation precludes the vortices which create spanwise flow? I am just speculating at this point.
<br><br>Back when I flew slope soarers some of my lighter planes would not land without spoilerons deflected. The rotor would just toss them about with devastating results. With the spoilerons up the plane would punch right through and was much less likely to tipstall.
<br><br>I also had little luck creating an elevator mix. I haven't tried the spoilerons on a pattern plane for many years now, but I remember some planes pitched up while others pitched down, and the rate and magnitude of pitch change was speed-sensitive.
<br><br><div><span class="gmail_quote">On 5/13/06, <b class="gmail_sendername">Ed Deaver</b> <<a href="mailto:divesplat@yahoo.com">divesplat@yahoo.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div><div>I use the "spoilers" as we call them a little different than has been mentioned. </div> <div> </div> <div>Use 10-25% up ailerons but I don't mix in any Elevator. My reasons are simple, don't need it for landing. As I am flying the downwind leg and activate the spoilers the plane pitches up, and actually have used them for spins on very calm days, but as soon as the plane slows down a bit it flies level. For me to add the mix in destroys the glide path I like.
</div> <div> </div> <div>The spoilers do have a very noticeable effect on cross wind landings suprisingly, eliminating a lot of the choppy effect but I don't understand why.</div> <div> </div> <div>Have done this method on 3 different style planes all with the same result.
</div> <div> </div> <div>ed</div><div><span class="e" id="q_10b3028fce4e24ee_1"><br><br><b><i>John Pavlick <<a href="mailto:jpavlick@idseng.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
jpavlick@idseng.com</a>></i></b> wrote:</span></div><div></div></div><div><span class="e" id="q_10b3028fce4e24ee_3"> <blockquote style="border-left: 2px solid rgb(16, 16, 255); padding-left: 5px; margin-left: 5px;">Bill,
<br>What plane are you trying this on? I have my both my Focii set up with this<br>and I like it. I use ailerons up and down elevator. In Futaba land I have<br>+30% Flaps (ailerons up) [= ~ 5 degrees] and -20% elevator (down) but you'll
<br>need to experiment. On some planes I use very little down elevator in the<br>mix, I just do it manually when I land. I found that using the "airbrakes"<br>helps me to be able to transition into a nearly flared condition very early
<br>on final without worrying about any tip stalling. You basically head<br>downwind, chop the power, hit the airbrakes and point the nose down. When<br>you get close, start to raise the nose and bleed off speed. You can then
<br>drag the plane to the mark with a little power if you need to. Try it at a<br>field where you have some room. You may find that you undershoot the first<br>few landings until you get used to how the plane comes down with the
<br>airbrakes on.<br><br>John
Pavlick<br><a href="http://www.idseng.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">http://www.idseng.com</a><br><br><br>> -----Original Message-----<br>> From: <a href="mailto:nsrca-discussion-bounces@lists.nsrca.org" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
nsrca-discussion-bounces@lists.nsrca.org</a><br>> [mailto:<a href="mailto:nsrca-discussion-bounces@lists.nsrca.org" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">nsrca-discussion-bounces@lists.nsrca.org
</a>]On Behalf Of<br>> Bill Markovitz<br>> Sent: Saturday, May 13, 2006 10:00 AM<br>> To: <a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">nsrca-discussion@lists.nsrca.org
</a><br>> Subject: [NSRCA-discussion] Air Breaks<br>><br>><br>> I'm interested in using the air brake function for<br>> slower and more controlled landings. Any suggestions<br>> for a starting point on the aileron and elevator
<br>> throws would be appreciated. Is it better to have the<br>> ailerons up and the elevator down or the ailerons down<br>> and the elevator up?<br>><br>> Thanks, Bill :)<br>><br>> __________________________________________________
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