ANN's Daily Aero-Term (02.17.09): Inertia Coupling | Aero-News Network
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Tue, Feb 17, 2009

ANN's Daily Aero-Term (02.17.09): Inertia Coupling

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.

Inertia Coupling

A potentially lethal phenomenon of high-speed flight in which the inertia of the heavier fuselage overpowers the aerodynamic stabilizing forces of the wing and empennage. The problem became apparent as single-engine jet fighter aircraft were developed with narrow wing spans that had relatively low roll inertia, relative to the pitch and yaw inertia dominated by the long slender high-density fuselage.

FMI: www.ascho.wpafb.af.mil/Genesis/chap5.htm

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