Wind Tunnel

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Today, monoplanes dominate, but biplanes came first. They had their advantages—and for some of today’s missions, they still do.

The Case for Strakes

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These small additions to your aircraft can make a significant improvement in its pitch response and authority at high angles of attack. Barnaby Wainfan gives you the strake story.
rv-14 aileron

Design Process: Roll Control

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The primary function of the wing is to generate lift, but it must also incorporate control surfaces to control the airplane in roll.

Wind Tunnel

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Seemingly inconsequential alterations—even mounting an inflight camera on the airframe—can result in big changes to an aircraft’s handling and performance.

Design Process: V-Tails

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A V-tail is a configuration where the horizontal stabilizer and vertical fin are replaced by a pair of surfaces mounted at a high dihedral...

Wind Tunnel

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Design process, part 5-airports.

Wind Tunnel

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Pitch non-linearities.

Wind Tunnel

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Trikes.

Wind Tunnel

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Reducing drag is the best way improve the performance of an airplane.

Wind Tunnel

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Yaw rarely occurs without rolling, and roll rarely occurs without yawing. This month Barnaby Wainfan discusses coupled motion, including adverse yaw, the spiral mode and Dutch roll.

In Case You Missed it

Wind Tunnel

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The Flying Flea.

Vortex M912 Gyroplane

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Low and slow, even in the wind. By Karl Storjohann.

Rounding a Hole

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Cut large holes in thin material freehand.

Lithium vs. Lead-Acid

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Lithium vs. Lead-Acid—the bench tests.