938. Mass Properties History of Eccentric Insulation on a Despun Vehicle
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Paper
Abstract
The insulation weight of a high-performance vehicle is noticeably reduced when insulation is applied eccentrically instead of concentrically to conic structures. This confines the need for maximum thickness to the windward (hot) side of the vehicle and ensures that the leeward (cold) side of the vehicle is not over-insulated.
This paper presents preflight and in-flight exact equations that will yield the insulation mass-properties history of weight, center-of-gravity coordinates, moments of inertia, and products of inertia. The use of these equations provides critical data on in-flight insulation loss and associated mass-property changes required for accurate flight mechanics analyses.
A weight savings and associated mass properties are noted for a comparative example problem.
