## A proposed Kalman filter algorithm for estimation of unmeasured output variables for an F100 turbofan engineNational Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, 1990 - Mathematics - 29 pages |

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adaptive trim control afterburner inlet total aircraft Aircraft engine performance algorithm Ames Research Center auxiliary output variables behavior as biases bias estimates bleed air burner static pressure CDF formulation CIVV compressor inlet total compressor stall control system control theory Core rotor speed covariance matrix DEEC degraded engine Dryden Flight Research effects of off-nominal engine control engine model engine parameter estimates engine performance engine simulation parameter estimation algorithm F-15 airplane F100 engine simulation Fan rotor speed flight data Flight Research Facility Gilyard gine performance increased from 37 inlet total temperature Kalman Filter Concepts Kalman filter structure linear low turbine inlet NASA nominal engine nozzle throat total obtained off-nominal behavior off-nominal engine behavior Optimal Control output estimates performance seeking control PLA increased proposed algorithm Proposed Kalman Filter propulsion system Riccati equation rpm N2 SOAPP simulation stall margin timate turbine metal temperature Turbofan unmeasured output variables variable model vector