INDEX EXCEEDS ARRAY BOUNDS

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Kumar Shreyansh
Kumar Shreyansh 2018-7-18
回答： Aquatris 2018-7-18
I am plotting NACA airfoil based on the equations. this is the code excerpt where error occurred:
gridPts = 500;
xu = ones(gridPts,1);
yu = ones(gridPts,1);
for i = 1:1:gridPts
xu(i) = x(i) - yt(i)*sin(theta(i));
yu(i) = yc(i) + yt(i)*cos(theta(i));
end
Please advise. this is for my class project. I am using 2018a.
  1 个评论
Geoff Hayes
Geoff Hayes 2018-7-18
编辑：Geoff Hayes 2018-7-18
Kumar - what is the full error message? The problem may be with yt since I don't see anywhere in the code where this variable is intialized. The others appear to be initialized with gridPts so should have the correct dimensions...

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回答（1 个）

Aquatris
Aquatris 2018-7-18
In your code you have slight mistake, where you forgot to assign to an index but instead overwrite the variable ("(i)" is the fix);
%Thickness distribution
yt = ones(gridPts,1);
for i = 1:1:gridPts
yt(i) = 5*T*(a0*sqrt(x(i)) + a1*x(i) + a2*x(i)^2 + a3*x(i)^3 + a4*x(i)^4);
end

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