Dwain Dibley. Posted March 22, 2021 Share Posted March 22, 2021 (edited) In the BMFA News, page 10. C(stability factor) = (d/k) X (Os/Ov) Where :- d = distance wing to tailplane cord - the moment arm k = main wing cord Os = surface area of tail plane Ov = surface area of the wing. I can follow the calculation, and get a result, but what figure are we aiming for as a satisfactory Stability factor. ? D.D. Edited March 22, 2021 by Dwain Dibley. Quote Link to comment Share on other sites More sharing options...
cymaz Posted March 22, 2021 Share Posted March 22, 2021 The same formula appears here. ......I think Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted March 22, 2021 Share Posted March 22, 2021 There's an online calculator I use here and it includes some recommendations for different types of models. Quote Link to comment Share on other sites More sharing options...
Dwain Dibley. Posted March 22, 2021 Author Share Posted March 22, 2021 Thanks Chaps... So it depends on the aircraft, and a figure to aim for was what was missing from the article. Cheers D.D. Quote Link to comment Share on other sites More sharing options...
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