Proposed measurement grouping for fixed wing aircraft noise measurements. Page 4, from Vertiflite (AHS Newsletter) Oct 1968.
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Proposed measurement grouping for fixed wing aircraft noise measurements

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Proposed measurement grouping for fixed wing aircraft noise measurements.

Page 4, from Vertiflite (AHS Newsletter) Oct 1968.

 

Added to Historical Records - Vert... and categorized in — 6 years ago

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