The HM-293, like most recent Fleas, uses a NACA 23112. If you look at the moment coefficient, it doesn't change much except at extremes of AOA. It's what I'm using on mine. Of course, if you do the moving rear wing, that's probably less important, as you'll have plenty of pitch authority — maybe more than you want! Is that still your plan?Question: What is the currently preferred airfoil for Fleas?
The current plan (given my decision to configure the FleaBike as a bog-standard Flea) is to make the rear wing incidence ground-adjustable so that the pilot can experiment, and then choose for himself what incidence he prefers.<snip> Of course, if you do the moving rear wing, that's probably less important, as you'll have plenty of pitch authority — maybe more than you want! Is that still your plan?
Hi Victor Bravo. Great idea, but not cheap. 2m lengths of 20mm CF tubes go for about $140.Duncan, look into using a carbon fiber tube as your leading edge, underneath the plywood.
Here’s the HM380 at the Lane Motor Museum without the fairings shown on the plans. I assume the point was either streamlining or to use up a spool of wire Mignet had kicking around because yikes that seems needlessly complicated.A question for all you Flea-bitten,
Does anyone know what the hell is going on inside the red circle of this pic (taken from the HM360 manual)?