RCAIDE.Library.Methods.Noise.Frequency_Domain_Buildup.Rotor.TIP_broadband_noise

TIP_broadband_noise

TIP_broadband_noise(alpha_tip, M, c, c_0, f, Dbar_h, r_e)

This computes the tip noise compoment of broadband noise using the method outlined by the Brooks, Pope and Marcolini (BPM) Model

Assumptions:

BPM models assumes a naca 0012 airfol

Source:

BPM Model: Brooks, Thomas F., D. Stuart Pope, and Michael A. Marcolini. Airfoil self-noise and prediction. No. L-16528. 1989.

Inputs:

alpha_TIP - angle of attack of tip section [deg] M - Mach number [-] c - airfoil section chord [m] c_0 - speed of sound [m/s] f - frequency spectrum [Hz] Dbar_h - high frequency directivity term [-] r_e - distance from noise source to observer [m]

Outputs

SPL_TIP - Sound pressure level of tip [dB]

Properties Used:

N/A