Build, Test, Refine and Fix—Part 1: Ground Tests

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At some point, a configuration of the airplane is frozen, a prototype is built and testing begins.

Iterate, Modify and Fix

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Wind tunnel.

Magic Configurations

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Designers are continually trying to create new and better machines that will outperform and outsell what is currently available.

Marketability

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The manufacturer must be able to sell enough airplanes to stay in business and make some money.

Manufacturing Considerations

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The designer must consider all three factors: Mission, Manufacturing and Marketing.

Choosing the Configuration

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Most of our recent discussions on the process of designing an airplane were based on the assumption that the airplane has a generally conventional...

Design Innovation

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A designer must make a large number of decisions in the process of designing an airplane. These range from top-level decisions, like the overall...

Secondary Flows

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Cooling within the engine compartment—oil and accessories.

Variable Geometry Cooling System

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The way to reduce or eliminate excess cooling drag in cruise is to use a variable-geometry cooling system that can change shape to control the amount of air flowing through the cowling.

Cooling Outlet Design

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The design must focus on sufficiently cooling the engine while minimizing drag.

In Case You Missed It

Ask the DAR

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NX numbers on older designs, logbook records, proving compliance with the 51% rule.

Engine Beat

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Removing your oil filter is not nearly as easy as putting it on. Steve Ells shows you how to take it off without turning your workshop into a Hazmat site.

Alternative Energies

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The greenest flight of all. By Dean Sigler.

Going Glass in a Glasair

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Lessons learned while installing a Dynon SkyView system in a Glasair Super II apply to all types of experimentals. By Gary Jones.