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Sail By Wire
...that Boermans has shared a design with someone else,” says Iscold. “He also changed the wing planform. I was going to implement a continuous change of chord [i.e., an elliptical...
Wind Tunnel
...of the wing MAC can be achieved by changing the wing planform and introducing a modest amount of wing sweep. One example of this approach is the swept-back upper wings...
Rapid Prototyping and Experimental Design
...span) that give us planform area and thus lift, which is the job of a wing. In a world where wet wing fuel capacity is your primary interest though, you...
Wind Tunnel
...here) to determine that for any given planform and airfoil: Optimum lift coefficient is given by: CLopt=sqrt(π e AR Cd0) Wing Size Once we have chosen the planform and airfoil...
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...
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...
Fixed Pitch vs. Constant Speed
...pitch of the blades, it can’t adjust the blade twist or planform. Why Constant Speed? Looking at Figure 1, we can see the primary reason to choose a constant-speed prop....
A Bit About Blades
...over the length of the blade and makes the optimum planform somewhat less tapered. Practical Considerations The theoretically optimum planform for a propeller blade is often not practically buildable. Particularly...
Wind Tunnel
...the desired level. Both the size and planform of the spade affect how it changes hinge moment over the full range of control surface deflection. Modifying spades is one of...
In Case You Missed It
Assistance for Resistance
This month’s home shop project was suggested by Matt Burch. Matt sent a couple...
A Tale of Two Antennas
With the recent rush to ADS-B, there has been a significant interest in GPS...
The Home Machinist
Phillips? Flat head? Double blade? Bob Fritz clears up questions you didn't even know you had about screwdrivers. When you're building a plane, the right tool for the right job (and right space) really does matter.