Malades Private Airmodeling Club

Malades Private Airmodeling Club
clik at the photo

Δευτέρα, 19 Σεπτεμβρίου 2011

Swept-forward wing Aerobatic RC canard model glider

This is a radio control aerobatic glider designed by Greg in 1986 with all symmetrical laminar flow wing sections and fuselage based on the NACA 66 series laminar flow airfoils. (similar to tuna fish and dolphin proportions, the fattest point is 66% back along the airfoil, more than halfway back unlike a traditional teardrop)
Veneered Foam wings with soarfilm covering.
The extreme low drag helps penetrate through strong headwinds such as this 30knot day at a south facing cliff at Sydney's Long Reef.
The front all flying canard elevator is mechanically linked to inboard elevators on rear canard wing. Outboard ailerons. No rudder control fitted or necessary.
Centre of gravity is approx 1cm forward of root of rear wing.
Inverted (upsidedown) performance identical to right way up.
It is nearly impossible to stall at landing speed and it is possible to pull full up elevator to slow it down for a vertical spot landing and still maintain roll control.

Interestingly, even though the fuselage was only made from styrene rather than tougher ABS the monocote form was very resistant to hard landings and collisions