ANN's Daily Aero-Term (02.05.08): Unfeather | Aero-News Network
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Tue, Feb 05, 2008

ANN's Daily Aero-Term (02.05.08): Unfeather

Aero-Terms!

Aero-Terms are designed to be a daily reminder of the terms, names, acronyms and explanations of the unique language that populates the aviation world. Aerospace, sport aviation, fixed wing, helo, you name it... it's all fair game.

Aero-Terms should serve as a quick but intriguing reminder of the terms you may use every day, or an introduction to an aspects of the Aero-World you may not yet be familiar with. ANN also encourages readers to go beyond the FMI link, and further research any intriguing terms.

Suggestions for future Aero-Terms are ALWAYS welcome, as are additions or discussion of the explanations given for each Aero-Term.

Unfeather

To change the blade pitch of a propeller from the feathered high pitch, which prevents airloads from causing it to windmill, to a lower pitch. When a propeller is unfeathered in flights, aerodynamic forces produced by air flowing over the blades case the propeller to turn the engine.

FMI: www.theaviatornetwork.com/pdf/GTM-07-050130-Propeller.pdf

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