I have issues calling Simulink in function. the function variable is called in Simulink file in a switch since switch compares a constant value there are errors running.

function Sg = distance(value) %kts
%clc; clear all; close all
%sealevel
vrot = 0;
vrot = value;
Hwind=0.0;
Patm=101325 %Pa
Tatm=273;  %K
Sref=11.9 %m2
b=8.85 %m
AR=6.57 
mass=1120 %kg
n=1.0
WTO=mass*9.8  %N
CLa=4.4;
CD0=0.065
K100=1/pi/AR;
K0=1/CLa; 
bhp=260   %hp
S=0.3;  %suction factor
% K=S*K100+(1-S)*K0;  %where S is a function of CL
K=0.11
mu =0.03

de=-10/57.3
CLde=0.18
CL0 = 0.5+CLde*de      %  flaps down0.5, flaps up 0.2
CLmax=CL0+CLa*12/57.3 % alpha max =16 for amber extinction; =12 for illumination of red
CLmin=CLa*4/57.3        % corresponding to alpha min of -4 deg
%vrot=10 %kts
Mach=[0  0.05 0.1 0.2 0.3]
Th0=400
Hm=1000/3.28
[den,a,Tatm,Patm,nu]=stdatmo(Hm,[]);
Th_at=Th0*(den/1.225-(1-den/1.225)/7.55)
Thrust=[1 0.95 0.9 0.85 0.8]*Th_at*9.8 % N

[Benjamin Thompson]

I do not see a call to Simulink here. Where is the error occurring in your code and what is the error message?

Answer 1

[Walter Roberson]

The function is defined as returning the value of Sg, but Sg is not assigned to in the function.