swiss boutique

case studies → reduce helicopter noise

We recently concluded a project for a large Aerospace international company, as their customers were sick of wearing active noise control headsets during their passenger flights. The task at hand was to replicate the headset’s performance in a setup fully hidden to the eye and body of the passenger.

Challenge accepted.

As part of this project we had several aspects influencing the system design, yet not directly contributing to the system performance.

First, it was not very convenient to place sensors anywhere within the aircraft. Due to aviation certification requirements, any placement in an already certified area would have a (cost) impact to re-certify such areas rendering such a system expensive. Hence we focussed our work on the cabin only – and unlike other implementations on the market – concentrated our active noise control system design in and around the passenger seat.

Out of an ‘acoustic camera’ measurement with a 3D laser scan model as reference, we did as part of the project.

Second, we had to be very specific in what, how and when we tested our setup. Why? Flying is darn expensive. In particular if you fly with those larger, neater, smoother aircraft. In light of this, we came up with a lean process to eliminate risk as quickly as possible, keep overall (aircraft) cost down and move quickly. Due to this, we were able to go from idea to proof-of-concept within less than three months. During this process we built several at-scale mockups and made use of simulations, thanks to our interdisciplinary team capable of shuffling a broad range of tasks.

Do you face a similar challenge? Get in touch with us and let us help.

Read more about our work in our other case studies.