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Flight Investigation of Cabin Noise Control Treatments for a Light Turboprop Aircraft
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Abstract
The in-flight evaluation of noise control treatments for a light, twin-engined turboprop aircraft presents several problems associated with data analysis and interpretation. These problems include data repeatability, propeller synchronization, spatial distributions of the exterior pressure field and acoustic treatment, and the presence of flanking paths. They are discussed here with regard to a specific aeroplane configuration. Measurements were made in an untreated cabin and in a cabin fitted with an experimental sidewall treatment. Results are presented in terms of the insertion loss provided by the treatment and comparison made with predictions based on laboratory measurements.
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Citation
Wilby, J., O’Neal, R., and Mixson, J., "Flight Investigation of Cabin Noise Control Treatments for a Light Turboprop Aircraft," SAE Technical Paper 850876, 1985, https://doi.org/10.4271/850876.Also In
References
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