Mechanical Impedance Approach to Engine Vibration Transmission Into an Aircraft Fuselage 670873
The paper demonstrates a mechanical impedance approach to an aircraft vibration problem. The desire is to reduce cabin noise resulting from fuselage vibration generated by engine rotor unbalance disturbances. A simplified analytical model is used in combination with experimental impedance data to investigate the effectiveness of several schemes applied to the engine/airframe interface. Airframe vibration absorbers are found to be the most effective. Qualitative correlation is achieved with the results of the installation of absorbers on the Douglas DC-9 aircraft. A more comprehensive analytical model is generated to account for three-dimensional effects; data acquistion for this model is discussed.
Citation: Rubin, S. and Biehl, F., "Mechanical Impedance Approach to Engine Vibration Transmission Into an Aircraft Fuselage," SAE Technical Paper 670873, 1967, https://doi.org/10.4271/670873. Download Citation
Author(s):
S. Rubin, F. A. Biehl
Pages: 9
Event:
Aeronautic and Space Engineering and Manufacturing Meeting
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1967 Transactions-V76-A
Related Topics:
Aircraft
Airframes
Vibration
Fuselages
Propellers and rotors
Transmissions
Noise
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