just before the start of the first for loop, define an empty matrix, this will be the storage for all the valid step-values. Replace the return statement with a statement that updates your storage matrix.
m = [];
for k = 17.12:0.001:17.13
for c0 = 0.1:0.1:0.5
for c1 = 1:1:5
for ac = 0.1:0.1:0.5
for mc = 0.2:0.1:0.7
for a = 0:0.1:0.2
for m = 0:0.1:1
propellerdesign;
%This is the main script which runs as it should
if T_req<= T && T <= 1.001*T_req && cav_points == 0
m = [m T_req]; % This causes your matrix to expand as necessary
end
end
end
end
end
end
end
end
