Direct-field acoustic testing, or DFAT, is a technique used for acoustic testing of aerospace structures by subjecting them to sound waves created by an array of acoustic drivers. The method uses electro-dynamic acoustic speakers, arranged around the test article to provide a uniform, well-controlled, direct sound field at the surface of the unit under test. The system employs high capability acousti… WebThe type of testing is called a direct field acoustic test (DFAT), a method that minimizes cost and schedule because the test could be conducted in situ. The speaker array produced an overall sound pressure level (OASPL) of 142 dB. The actual flight environment for the exploration upper stage has an OASPL of approximately 155 dB, but the direct ...

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WebFeb 1, 2016 · DFAT is a relatively new aerospace acoustic testing method, first used for acoustic qualification of a spacecraft in the late 1990s. DFAT has certain advantages over the conventional reverberant field acoustic testing (RFAT) approach, in particular, reduced facilities development and maintenance costs and portability of the acoustic test … http://everyspec.com/NASA/NASA-NASA-HDBK/NASA-HDBK-7010_55260/ shared policy assumption

History - MSI-DFAT Direct Field Acoustic Test

WebMiami, Florida nightclub near condominiums. Bowling Green, Kentucky blow mold facility. New York City, New York rooftop condenser units. If you are looking for more information … Web7 days to go! Next week ATS will start. As usual, a series of seminars will precede the conference. On Monday 4 Oct Wes Mayne III, Alan Merrick and I will be… WebQualification and DFAT. Measurement of structural responses to the acoustic environment that will be applied to a system is important in verifying that the system will survive the … pool time clock parts