Engine Noise Testing in an Economical “Semi” Anechoic Room 780171

A “semi” anechoic room design has been proposed and constructed from readily available, inexpensive construction materials. To demonstrate its feasibility, noise testing was conducted using a rotary engine as the noise source.The results of the testing indicated that the design is functional since free field conditions exist. This condition was proven to exist for at least one angular position measured relative to the exhaust pipe and in the horizontal plane of the exhaust pipe. Other information is provided concerning engine behaviour and type of noise radiated.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 43% off list price.
Login to see discount.
Special Offer: Purchase more aerospace standards and aerospace material specifications and save! AeroPaks off a customized subscription plan that lets you pay for just the documents that you need, when you need them.