>Currently I have a 2" spoiler drawn in with the leading edge >at 45% which I believe is the beginning of the 1st flat facet. >Will that be ok? I'll go ahead and lengthen it to 2.5".
OK. >Your comment about the elevator is interesting. Although I would like to >locate it just off the boom per the Allegro Lite, I had assumed it best to >locate the elevator higher up, perhaps a T-tail, to get it out of the >turbulence caused by the spoiler. Would you care to comment? The stab sees two things from the spoiler... turbulence (maybe), and upwash. The turbulence is fairly compact vertically -- some fraction of the wing chord. But I've never seen any adverse effect of this turbulence on the controllability, at least on the Allegro-Lite. I don't think it's a problem in general. The upwash extends vertically over a greater distance -- some fraction of the spoiler's span. So mounting the stab higher up on a T-tail is almost futile. You won't reduce the upwash it sees by all that much. I would do the mechanically simplest stab mount, just above the boom, and use spoiler->elevator mixing to deal with it. - Mark RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
