MathGroup Archive 1998

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Newton-Raphson Method


I would like some help in writing a program for a flight simulation.  I
have to 
enter a control matrix and from this I must obtain graphs with a
function of 
time.  However, I am stuck with finding the equilibrium state.  I must
use the 
Newton-Raphson method on the first order differential state space
equation form.

ie x'=Ax+Bc where x is state variables

c is the control matrix

to gain the trimmed state varibles in other words I have to obtain the
controls 
and states for equilibrium steady level flight


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