Aeroacoustics instrumentation and noise measurements Part II: Propeller noise measurements

Venkatakrishnan, L and Verma, SB (2006) Aeroacoustics instrumentation and noise measurements Part II: Propeller noise measurements. Project Report. National Aerospace Laboratories, Bangalore.

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    Abstract

    Measurements were carried out on the Saras engine and propeller operating at full torque on the test bench setup of C-CADD. Near field measurements were carried out from 0deg to 110 degs in the forward quadrant. The data show the expected trends and noise spectra associated with the Blade Passing Frequency. This exercise has shown the OASPLs reach a high of about 123 dB in the near field of the Saras propeller without forward motion. Further studies are needed to ascertain the sound field in the far-field with the additive effect of geometry of fuselage and the stabilizer.

    Item Type: Proj.Doc/Technical Report (Project Report)
    Uncontrolled Keywords: Propeller noise, Aeroacoustic instrumentation
    Subjects: AERONAUTICS > Aerodynamics
    Division/Department: Experimental Aerodynamics Division, Experimental Aerodynamics Division
    Depositing User: Smt Bhagya Rekha KA
    Date Deposited: 06 Sep 2011 16:29
    Last Modified: 06 Sep 2011 16:29
    URI: http://nal-ir.nal.res.in/id/eprint/9958

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