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G3X Upgrade

...could leave well enough alone. Nope! When I originally ordered my avionics from SteinAir, Inc. in 2013, I chose two Garmin GDU 370 portrait displays. The 7-inch portrait display planform...

Wind Tunnel

...the elevators to increase the amount of opposing hinge moment caused by elevator deflection. There are several ways to do this. Elevator Planform and Tail Aspect Ratio The hinge moment...

Design Process: Stall and Roll Damping

...its airfoil stalls. This affects how sudden the onset of a stall is, but unless the wing planform has a significant amount of sweepback, the wing’s contribution to pitching moment...

Design Process: Cantilever Wings

...changes in wing planform, wing sweep or airfoil shape to move the position of the spar at the wing root forward or aft relative to the aerodynamic center of the...

Wind Tunnel

...conventional surface with the same planform. It’s important to be aware that an improperly designed all-moving tail surface with the hinge line too far forward can have so much floating...

Alternative Energies

...craft easily managed by the average pilot. The planform for the Alternair Amp. Power Supply Surprisingly, the aircraft will achieve this LSA performance with a mere 20-pound, 30 kW (40.2...

Bearhawk LSA

...the same wing (airfoil, planform, and size) as the Super Cub, and the design goals were similar to those of the Cub variants, as well as the Bearhawk LSA. In...

Design Process: Airfoils

Once the size and planform of the wing have been determined, it’s time to choose (or design) the airfoil. The airfoil must provide the right aerodynamic characteristics to give the...

Backcountry Cruzer

...and the Sonex weighed 600 pounds with its 80 hp AeroVee engine. The mass was pretty close, but the wing planform was not.” The Cruzer’s high-wing design provides good ground...

Tech-Built Skyotë

...years ago in the December 1976 issue of Sport Aviation. The Skyotë uses a biplane planform, with a swept wing that will remind you of a B cker B 133...

In Case You Missed it

Leters

Wag-A-BondRay Hill has built one beautiful airplane . However, the author, Dan Horton seems...

Rear Cockpit

Droning like bagpipes.

Design Process: Stall and Roll Damping

Last time we took a look at the effect of twisting the wing. Wing...

Tapping Heads

The tapping head has a lot to commend it for the home machinist who is trying to add efficiency and consistency to tapping tasks.