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Rapid Prototyping and Experimental Design

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...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

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...while the governor can change the pitch of the blades, it cant adjust the blade twist or planform.Why Constant Speed?See Figure 1 to appreciate the primary reason to choose a...

Remember When: The BD-5 Micro

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...same tight radius, watching his tiny gray planform growing rapidly in my sights. We executed a classic scissors and yo-yo, and then circled once before I latched on to his...

Letters

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...force due to a small difference of the blades in pitch, planform or both. If a two-blade propeller is mounted to a 6-inch flange with as little as 0.01-inch (ten-thousandths...

Tail Surfaces and Aerodynamic Effects

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...arm. Tail Design Considerations The airplane designer must choose the right combination of tail arm, tail area and tail planform to provide the desired characteristics. The most fundamental trade-off is...

Sensenich Goes Composite, Introduces New Ground-Adjustable Prop

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...internal-pressure-molded system. According to the company, this production process yields a durable, low-inertia propeller. The propeller is designed with a swept-blade planform for maximum efficiency. The EZ-pitch hub features a...

Wind Tunnel

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...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...
Tom Aberle said he looked at Phantom daily for a couple of years trying to decide if it was ugly or beautiful, and while its combination of angles and curves is unique, its 12 championships make it beautiful in our eyes.

Biplane Gold

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...the late spring of 2003. Robbie Grove says Phantom’s wings are basic, “hot wire, blue foam” constructions. Robbie started with airfoils and planforms specified by the Phantom team, then calculated...

In Case You Missed it

Engine Beat

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As Lycoming and Continental vie for market share, the two power players are updating and improving long-existing engine designs and introducing new products to meet demand. By Steve Ells.

PS Engineering PMA9000EX

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After a quick and easy installation, PS Engineerings new PMA9000EX audio panel is test-flown by Editor-in-Chief Marc Cook in his Glastar Sportsman.

All About Avionics

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Having worked with a variety of products from various manufacturers, author Stein Bruch has a lot of wisdom on the ins and outs of electronic flight instrument systems (EFISes) for homebuilts. He dispenses those smarts here, and offers tips on what to consider when making this important avionics decision, including such items as compatibility, reliability, value and ease of installation.

Editor’s Log

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Editor Mary Bernard addresses readers’ concerns about legibility in the magazine and offers a correction about pricing of the Safari kit helicopter.