- Feb 13, 2010
- Fort Walton Beach, Florida, USA
A 7' center section with, say, 5' outer panels works perfectly for Mignet-style upward-folding wings *if* you are talking about a two-axis machine with pitch by variable front wing incidence, in other words a true Pou-du-Ciel. It could also work well on a two-axis machine with a fixed incidence front wing and a large elevator on only the front wing center section, perhaps even extending beyond the normal trailing edge to get more area for control, sort of a hybrid between a Pou-du-Ciel and an Lacroix Autoplan. Ditto if you move the pitch control to the rear wing with either variable incidence or a center section elevator. Once you introduce ailerons or any other control surfaces outboard of the hinges, however, things get more complicated.
That works if you have a long narrow storage space and/or a long trailer but you run into problems if you are limited to a specific length like a 20' container or a single-car garage (typically 12/14/16' wide and 22/24' long in the USA).If you could keep the span of both wings slightly less than 16’ by increasing the chord, you could use the Mignet folding wing hinge which would make rigging a simple one man job. Using the same chord and airfoil on both wings is a ‘no brainer’
I like the idea of the fore wing having a central mast that can rotate, so you can unhook the side struts and turn the wing 90 degrees for storage.