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Barnaby Wainfan

Barnaby Wainfan
206 POSTS 1 COMMENTS
Barnaby is a Technical Fellow for Northrop Grumman’s Advanced Design organization. A private pilot with single-engine and glider ratings, Barnaby has been involved in the design of unconventional airplanes including canards, joined wings, flying wings and some too strange to fall into any known category.

A Bit About Blades

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Like a wing, a propeller blade is characterized by its area, planform, and airfoil cross section.

Blade Inflow Angle

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As the propeller moves through the air, each point on the blade follows a helical path.

Prop Blade Mach

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Prop blade Mach.

Prop Momentum Theory

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Proper selection and design of the propeller is one of the keys to airplane performance.

Wind Tunnel

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Last month we took a look at using hinge-line offset to aerodynamically balance control surfaces. Offset hinge balances are effective, but they were not...

Wind Tunnel: Offset hinge lines

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Offset hinge lines.

Wind Tunnel

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Stiffness.

Wind Tunnel

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Beefing it up.

Wind Tunnel

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Getting it wrong.

All-moving Tails

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All-moving tails.

In Case You Missed It

Ask the DAR

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RV-7A converted to RV-7, importing a Canadian ultralight to the U.S. and registering as an LSA.

Completions

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Builders share their successes.

For Evie

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Early in my build project, I found the absolute perfect number.

Letters

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Air/Fuel Ratio Display Great article on air/fuel ratio monitoring in the March 2019 issue. Is...