NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
A Brief Historical Survey of Rocket Testing Induced Acoustic Environments at NASA SSCA survey was conducted of all the various rocket test programs that have been performed since the establishment of NASA Stennis Space Center. The relevant information from each of these programs were compiled and used to quantify the theoretical noise source levels using the NASA approved methodology for computing "acoustic loads generated by a propulsion system" (NASA SP ]8072). This methodology, which is outlined in Reference 1, has been verified as a reliable means of determining the noise source characteristics of rocket engines. This information is being provided to establish reference environments for new government/business residents to ascertain whether or not their activities will generate acoustic environments that are more "encroaching" in the NASA Fee Area. In this report, the designation of sound power level refers to the acoustic power of the rocket engine at the engine itself. This is in contrast to the sound pressure level associated with the propagation of the acoustic energy in the surrounding air. The first part of the survey documents the "at source" sound power levels and their dominant frequency bands for the range of engines tested at Stennis. The second part of the survey discusses how the acoustic energy levels will propagate non ]uniformly from the test stands. To demonstrate this, representative acoustic sound pressure mappings in the NASA Stennis Fee Area were computed for typical engine tests on the B ]1 and E ]1 test stands.
Document ID
20120003777
Document Type
Other
Authors
Allgood, Daniel C.
(NASA Stennis Space Center Stennis Space Center, MS, United States)
Date Acquired
August 25, 2013
Publication Date
February 15, 2012
Subject Category
Acoustics
Report/Patent Number
SSTI-8080-0058
EA-00294
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

NameType 20120003777.pdf STI
No Preview Available