This SAE Aerospace Recommended Practice will serve as a practical resource that offers guidance to both the machine operator and process engineer for isolating the source(s) of non-repeatability in measured unbalance data. The content of this standard addresses:
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Machine capability to achieve the specified unbalance tolerances and repeat within those tolerances.
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Tooling capability to repeat within the specified unbalance tolerances.
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Rotor characteristics that may preclude repeating within the required unbalance tolerances.