Discovery

There are probably more than a million fume hoods operated in laboratories throughout the United States. Most of these fume hoods still run under more or less continuous conditions and thus consume an enormous amount of energy per year. There seems to be a significant savings potential if the total exhausted volumes could be reduced while all safety requirements are met. 

Existing knowledge of the effect of sonic booms on communities was based primarily on field experiments conducted during the 1960s. It was concluded that high-amplitude sonic booms, such as those from the Concorde, were unacceptable to a large segment of the population, and overland supersonic flights were prohibited.