Earplug Study Case

We were approached by a customer to perform a leak study on earplugs and determine leak rate dependability on pressure differential exposure. The ideal earplug would present a lower depressurization rate to reduce passengers' unpleasant experience during landing instead of plug which would act as a blocker maintaining the pressure differential and passengers' discomfort.

The following data shows a comparative study on earplug performance for different altitudes between two different companies:

Company A

Company B

As shown above, company A presents the best performance in terms of differentiating leak rate as function of altitude. Otherwise, company B Shows minimum response to altitude dependency on leak rate.