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Aeronautical engineering.
Member rating: No Rating | Words: | Submitted: Mon Jun 19 2006
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MECHANICS; THE TRIFILAR SUSPENSION By: BILAL GHALY B.ENG AERONAUTICAL ENGINEERING GROUP B1 Introduction The periodic time, T of the oscillations and hence the moment of inertia of the body on the platform can be calculated using the following formula: T = 2? * L * (Io + I) r2g * (Mo + M) Where; L = Length of the suspension wires r = Radius from the centre of the platform to the attachment points of the suspension wires. Io = Moment of inertia of platform Mo = Mass of platform I = Moment of inertia of body M = Mass of body g = Acceleration due to gravity The moment of inertia of the platform, Io can be calculated measuring the timing of the oscillations of the platform when it is unloaded; hence I and M will be zero when calculating. In the case of the rectangular bar; since it is of a regular shape, a value of the moment of inertia (Iyy) through the axis yy through G, can be calculated...
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