1970-02-01

Noise Implications for VTOL Development 700286

Noise from the aircraft may prevent the establishment of VTOL ports near population centers-the locations which can provide a significant contribution to mass transportation. To determine how annoying these aircraft may be, a total community annoyance measure (TCAM) has been developed. The TCAM can indicate flight trajectories which minimize the annoyance of the aircraft and the type of aircraft which are acoustically acceptable for operations from a V/STOL port. Low disc loading rotors seem best for operation near terminals while low tip speed propellers are best for cruise.

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