Desire is to reduce cabin noise resulting from fuselage vibration generated by engine rotor unbalance disturbances; simplified analytical model is used in combination with experimental impedance data to investigate effectiveness of several schemes applied to engine/airframe interface; airframe vibration absorbers are found to be most effective; qualitative correlation is achieved with results of installation of absorbers on Douglas DC-9 aircraft; more comprehensive analytical model is generated to account for three-dimensional effects; data acquisition for this model is discussed.
Mechanical impedance approach to engine vibration transmission into aircraft fuselage
SAE -- Paper
SAE Meeting ; 1967 Noise
1967
9 pages
Conference paper
English
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Mechanical Impedance Approach to Engine Vibration Transmission Into an Aircraft Fuselage
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