Acoustical signatures of various types of V/STOL aircraft sized for 60 passengers and 500 mi range were analytically predicted, and tape recordings synthesizing these sounds prepared; perceived noise levels were calculated, and levels which produced equal annoyance to jet airplane were determined; results indicate that several V/STOL aircraft configurations exhibit subjectively better acoustical characteristics that others depending on flight configuration and inherent differences in propulsion systems; feasibility of synthesizing subjectively acceptable aircraft noises and usefulness of paired comparison testing have been demonstrated. (09536)
Subjective response to synthesized flight noise signatures of several types of V/STOL aircraft
NASA CR
NASA Contractor Reports ; n 1118
1968
92 pages
Report
Englisch
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A subjective evaluation of synthesized STOL airplane noises
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|Flight directors for STOl aircraft
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