ZAL_YB-2017

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ZAL GMBH ACHIEVEMENTSACOUSTICS LABACOUSTICS LAB –ACOUSTIC FLIGHT TESTSON THE GROUND62 — 63OUT OF THE BOXDr. Kay Kochan and his team are workingon applied acoustics solutions
»THE MOST UNPLEASANT NOISE OCCURS IN THE TAKE-OFF PHASE, IMPACTING THE GENERALCOMFORT OF PASSENGERS. ESSENTIALLY, IT IS PRECISELY THIS CABIN NOISE THAT WE ARESIMULATING AND INVESTIGATING IN OUR ACOUSTICS AND VIBRATION TESTS, WITH THE AIMOF ACHIEVING MORE ACOUSTIC CABIN COMFORT IN THE FUTURE. THIS INCLUDES INSULAT-ING AGAINST BACKGROUND NOISE AS WELL AS QUALITATIVE IMPROVEMENT TO CABIN AUDIOSYSTEMS.« DR. KAY KOCHAN— On 1 March 2015, Dr. Kay Kochan entered theAcoustics Lab for the very first time – in Wellingtonboots and with a safety helmet on his head. Thefirst concrete walls for the research facility hadjust been erected. Since the completion of ZAL,Kay Kochan has been working together with hiscolleagues, Benjamin Becker and Matthias Weber,on optimizing cabin acoustics and conductingacoustic tests. What makes acoustics researchat ZAL so special is the so-called Acoustic Flight-LAB Demonstrator, a generic aircraft rumpfuselage with the dimensions of an A320. This,together with an array of loudspeakers for noisegeneration, serves as a test stand that enablesresearchers to conduct acoustics and vibrationtests on the ground. This is a revolutionary opportunityto replace the laborious and very expensiveairborne flight tests. The ingenious constructionof the Acoustics Lab, with its acoustic free field,the demonstrator, and its vibration-free mountingon stilts, combined with the flexible sound systemto generate noise in the fuselage, facilitates laboratorytests in conditions that are almost identicalto reality.DR. KAY KOCHANAcoustics expert, ZAL GmbHRESEARCH & TECHNOLOGY
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ZAL YEARBOOK2017
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ZALYEARBOOK 2017CONTENTS4 — 5INTR
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6 — 7INTRODUCTION
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10 — 11ROLAND GERHARDSCEO ZAL Gmb
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