RCAIDE.Library.Methods.Aeroacoustics.Semi_Empirical.Airframe.trailing_edge_flap_noise

trailing_edge_flap_noise#

trailing_edge_flap_noise(Sf, cf, deltaf, slots, velocity, M, phi, theta, distance, frequency)[source]#

This calculates the noise from the flap trailing edge as a 1/3 octave band sound pressure level.

Parameters:

Sf (float) – Flap area [sq.ft].
cf (float) – Flap chord [ft].
deltaf (float) – Flap deflection [rad].
slots (int) – Number of slots (Flap type).
velocity (float) – Aircraft speed [kts].
M (float) – Mach number [Unitless].
phi (float) – Azimuthal angle [rad].
theta (float) – Polar angle [rad].
distance (float) – Distance from airplane to observer, evaluated at retarded time [ft].
frequency (array_like) – Frequency array [Hz].

Returns:

SPL – One Third Octave Band Sound Pressure Level [dB].

Return type:

array_like

Notes

The function uses correlation-based methods to compute the noise levels from the trailing edge flap.

Definitions

References

None