Technical data

DOC-01-TELAS-CRG-4 ASTi ACE Studio Components Reference Guide Rev.M
122 Copyright © 2014 Advanced Simulation Technology inc.
Control Inputs
Qfactor
Type Default Value
float32 1.0
Description: Quality factor for the air noise filter. If the Q factor
connection is blank then the Q scale factor is used as the Q value, or
the Q is the scale factor times the output result of the control object.
Audio Input
InSignal
Type Default Value
audio
Description: Audio stream input links. All of the incoming audio is
mixed in this component. The audio stream is used as an input to the
filter. The input signal comes from another component in the model.
Audio Output
OutputSig-
nal
Type Default Value
audio true
Description: Audio output stream from the PropRotor component.
Internal Parameters
Filter-
FreqScale
Type Default Value
float32 4.0
Description: Scale factor for noise filter roll-off frequency.
FilterType
Type Default Value
filter_type2 BandPassQ
Description: Selects a two pole filter type from: Lowpass, Band-
pass, Highpass, LowpassQ, BandpassQ, and HighpassQ. The latter
three are amplitude adjusted such that the filter has unity gain at the
roll-off frequency, and maintains this gain as the quality factor is
increased. The bandpass filters have the lowpass and highpass poles
at the same roll-off frequency.
Machlimit
Type Default Value
float32 .950
Description: A limit for the calculated tip mach speed. This keeps
the maximum mach speed to a predetermined maximum. Usually
between 0.95 and 0.99, depending how dominant the thickness noise
is required. The sound model is not accurate above 0.99 since super-
sonic effects start to dominate the sound spectrum.
Numberof-
Blades
Type Default Value
uint8 6
Description: Number of blades on the shaft.