Re: Saturn V noise level at launch


Stephen Jones wrote:
"As loud as a Saturn V at lift off" is sometimes quoted as one of the
loudest man-made sounds. Are there any published noise measurements for
the Saturn V launch?

--
Steve
dorsetbays@xxxxxxxxxxx

I was not able to find noise data for a Saturn V launch, but here are
reports about noise generated by Saturn I launches and Saturn V ground
tests:

Predicted acoustical performance of the S-IC SOUND suppressor

Kramer, F.
NASA Center for AeroSpace Information (CASI)
NASA-TN-D-3398 , 19660501; May 1, 1966
Scale model acoustical tests for predicting performance of S-IC static
test facility sound suppressor
Accession ID: 66N23853
Document ID: 19660014564

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660014564_1966014564.pdf

=============================================================
Far-Field Noise Characteristics of Saturn Static Tests
Dorland, Wade D.
NASA Center for AeroSpace Information (CASI)
NASA-TN-D-611 , 19610801; August 1961
A far-field survey has been conducted to determine the characteristics
of the noise generated by the Saturn static firing tests. Data obtained
for the first series of eight tests indicate the noise has high power,
broad directivity, a low frequency spectrum, and low efficiency.
Initial tests were made firing two engines on the first test and four
engines on the second test. These tests produced sound power levels of
0.56 megawatt and 1.6 megawatts, respectively, with low efficiencies of
0.04% and 0.06%. The remaining six tests were made with eight engines.
They produced sound power levels ranging from 25 megawatts to 40
megawatts, with an acoustic efficiency of approximately 0.7%. Frequency
spectra peaked between 10 cps and 100 cps, with a severe dip at 250 cps
and a minor peak at 1000 cps. The effects of impingement on the the
flame deflector and the dampening of the cooling water make it very
difficult to isolate the effects of clustering the engines.
Document ID: 19990040687

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19990040687_1999055009.pdf


===========================================================
Results of acoustical survey of sa-2 launch

Dorland, W. D.; Tedrick, R. N.
NASA Center for AeroSpace Information (CASI)
NASA-TM-X-51699; MTP-TEST-62-5 , 19620820; Aug 20, 1962
Sound measurements during launch of saturn i /sa-2/ vehicle
Accession ID: 64N24000
Document ID: 19640014086

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19640014086_1964014086.pdf


============================================================
Ground testing at MSFC

NASA Center for AeroSpace Information (CASI)
NASA-TM-X-53486 , 19650101; Jan 1, 1965
Ground test research on empirical sound fields, static testing
instrumentation, and rocket engine sound suppression
Accession ID: 66N34346
Document ID: 19660025056

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660025056_1966025056.pdf


===========================================================

Interaction of structure and liquid in the sound suppressor system
Bauer, H. F.
NASA Center for AeroSpace Information (CASI)
NASA-TN-D-3178 , 19660101; Jan 1, 1966
Interaction of structure and liquid of the Saturn V sound suppressor
system
Accession ID: 66N15315
Document ID: 19660006026

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660006026_1966006026.pdf


============================================================
SATURN S-I-10 STATIC TEST VIBRATION AND ACOUSTIC DATA

NASA Center for AeroSpace Information (CASI)
NASA-TM-X-53377 , 19660111; JAN 11, 1966
VIBRATION AND SOUND INTENSITY MEASUREMENTS OF SATURN S-I-10 VEHICLE IN
STATIC TESTING
Accession ID: 66N15826
Document ID: 19660006537

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660006537_1966006537.pdf


============================================================

Rusty

.

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