Finally does the airfoil of the Monarch compensate for the lack of camber changing as in the Wizard or Climmax PF?

From : Don Stackhouse

I think I'd turn that around, "does the camber changing of the Wizard or Climmax PF compensate for the lower weight and different airfoil of the 'D'?". I don't have a great deal of flight experience with the Climmax PF, but from what I know of low Reynolds number aerodynamics, airfoils like the PF's and narrow chord flaps, I would say definitely not for the PF. We've tried similar arrangements on similar airfoils at various times in Monarch history, and they don't seem to do much good for performance, only for de-thermallizing and for control authority. The Wizard with its wide chord flaps does much better, but on a really light-air day the 'D-lite' will do better. Induced drag is primarily a function of wingspan (NOT aspect ratio!) and weight. Since the wingspan is limited by the HLG rules, weight becomes one of the biggest factors in light air performance. The flapped airplanes have to carry around 3 or 4 servos on the same wingspan that the 'D' only has to carry two. The 'D' is also optimized for slightly lower airspeeds, which helps its turning radius, getting it closer to the core of any available thermals.

Still air times of the 'D-lite' are the highest of any HLG we've tested. Period.

Don Stackhouse @ DJ Aerotech