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AIR902 - Determination of Minimum Distance from Ground Observer to Aircraft for Acoustic Tests

Details
Document Number: AIR902
Revision Number:
Title
Determination of Minimum Distance from Ground Observer to Aircraft for Acoustic Tests
Scope
A photographic technique is described for determining minimum observer-to-aircraft distances during acoustic "fly-over" tests. Possible sources of error are discussed, and it is shown that with ordinary care results are sufficiently accurate to require no correction.
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