Helicopter noise measurements data report. volume I. helicopter models: Hughes 300-C. Hughes 500-C, Bell 47-G. Bell 206L

True, H.C.; Rickley, E. J.; Letty, R.M.; United States. Department of Transportation. Federal Aviation Administration; John A. Volpe National Transportation Systems Center (U.S.)

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Helicopter noise measurements data report. volume I. helicopter models: Hughes 300-C. Hughes 500-C, Bell 47-G. Bell 206L

1977-04-01
By True, H.C. ; Rickley, E. J. ; Letty, R.M.

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English

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Details:

Creators:

True, H.C. ; Rickley, E. J. ; Letty, R.M.

True, H.C. ; Rickley, E. J. ; Letty, R.M. Less -
Corporate Creators:

United States. Department of Transportation. Federal Aviation Administration ; John A. Volpe National Transportation Systems Center (U.S.)

United States. Department of Transportation. Federal Aviation Administration ; John A. Volpe National Transportation Systems Center (U.S.) Less -
Subject/TRT Terms:

[+]

Acoustic Measuring Instruments Aircraft Noise Approach Databases Effective Sound Pressure Glide Path Systems Glide Slope Ground Effect Helicopter Noise Levels Helicopters Hover Level Flyover Sound Level Time Histories
Publication/ Report Number:

FAA-RD-77-57, 1
Resource Type:

Tech Report
Geographical Coverage:

Virginia
Corporate Publisher:

United States. Department of Transportation. Federal Aviation Administration
Abstract:

This data report contains the measured noise levels obtained from an FAA Helicopter Noise Test Program. The purpose of this test program was to provide a data base for a possible helicopter noise certification rule. The noise data presented in this two volume report is primarily intended as a means to disseminate the available information. Only the measured data is presented in this report. All FAA/DOT data analysis and comparisons will be presented in a later report which is scheduled for distribution in July, 1977. The eight helicopters tested during this Helicopter Noise Test Program constituted a wide range of gross weights and included participation from several helicopter manufacturers. The helicopter models used in this test program were the Hughes 300C, Hughes 500C, Bell 47-G, Bell 206-L, Bell 212 (UH-1N), Sikorsky S-61 (SH- 3A), Sikorsky S-64 'Skycrane' (CH-54B), and Boeing Vertol 'Chinook' Ch-47C. Volume I contains the measured noise levels obtained from the first four helicopters while Volume II contains the data from the remaining four. The test procedure for each helicopter consisted of obtaining noise data during hover, level flyover, and approach conditions. The data presented in this report consists of time histories, 1/3-octave band spectra, EPNL, PNL, dBA, dBD and OASPL noise levels.
Format:

PDF
Collection(s):

Volpe Center
Main Document Checksum:

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urn:sha256:bd4604fa56cdf43fad8d76902d48bfe52930ab8881c8d153768089c76e27ee85
Download URL:

https://rosap.ntl.bts.gov/view/dot/10026/dot_10026_DS1.pdf
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Helicopter noise measurements data report. volume I. helicopter models: Hughes 300-C. Hughes 500-C, Bell 47-G. Bell 206L

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