OK, after a bit more thinking I believe the Jacobian should actually be J = [F(P,K)/dK1; F(P,K)/dK2; ...; F(P,K)/dK22] where F(P,K) is the fit function I have written in MATLAB, P are the input parameters for spool speed, temperature and pressure. It was confusing me how to take the derivative...
Hi,
I am trying to write a MATLAB script to estimate the damage to a turbofan engine component based on key engine parameters; spool speed (NH), high pressure compressor inlet pressure (P30) and high pressure compressor inlet temperature (T30). I have an empirical formula to base the fit on...
