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Blast From the Past
...The only known surviving Dreidecker prop was scanned to replicate the original planform and airfoil, then this duplicate prop was carved for Chris’ Dr.I. The Prop The propeller is just...
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...
SX Appeal
...offset 2° to the right and 1.5° down to account for P-factor. The wing is small, no two ways about it. Reminiscent of the Metroliner, the high-aspect-ratio planform is best...
Design Process: Span and Aspect Ratio
...turn our attention to details of the planform. The most fundamental design decision at this point is the choice of span and aspect ratio. These two parameters are mathematically linked...
Hiperbipe
...that it is a straightforward, easy-to-fly airframe. The flat sides, while making a dramatic and unusual planform, separate the air into two planes rather than introducing the complex airflow of...
Design Process: Vertical Tail Spin Considerations
...2: Different combinations of tail position and fin planform will affect how much of the vertical tail remains effective in a spin. Figure 2 shows how some combinations of tail...
September 2022
On the cover: Tricycle gear and taildragger versions of Sling’s new High Wing fly in formation near Johannesburg, South Africa. Photographed by Bruce Perkins. Table of contents Sling High Wing…...
Stick to the Plans
...seals. Stahr Painter With the VAF scheme set before he finished construction, Kirk had time to puzzle out the airplane’s planform paint. The emblem’s lightning-bolt transition from red reality on...
Design Process: Tail Surfaces
...move with loading condition and fuel state, the more stabilization the tail will need to provide. The stabilizing effectiveness of the tail is affected by its area and planform as...
Design Process: End Plates and Winglets
...of the tip causes the air to wrap up into a vortex that sheds aft of the tip of the wing. Last month we saw how tip planform and shaping...
In Case You Missed it
Homebuilt Aircraft Directory 2022
Here we are again with our annual “directory” of homebuilt aircraft that are available...
Buzz Words: Understanding Dihedral Effect
While certified airplanes have to meet Part 23 requirements for positive dihedral, amateur-built airplanes are exempt. Ed Kolano looks into the details of dihedral, and how you can use it to your airborne advantage.