The computation of airplane-level inertia data is discussed. Inertia envelopes are developed that show maxima and minima and typical values as a function of airplane weight. These envelopes along with gross weight versus CG envelopes are used in the flight simulator. They provide boundaries for calculated mass properties data. An interior arrangement is shown of the typical 787 used in the plots. Airlines may request operational empty weight mass properties data reflecting their unique interior layouts for their flight simulators. Some general comments about inertia data are made. It will be shown that generating airplane-level inertia data is an important part of airplane design, simulation and operation.
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