This report addresses development of a rotor state/trim modeling capability for noise modeling of decelerating rotorcraft approaches. The resulting technique employs discretization of the descent trajectory as multiple steady state segments for input to CAMRAD.Mod 1 to predict rotor states for acoustic analysis. Deceleration is included by modifying the CAMRAD.Mod 1 free flight trim options to allow trim to the specified acceleration/deceleration components.Murty, Hema and Berezin, Charles R.Langley Research CenterNOISE REDUCTION; FLIGHT PATHS; APPLICATIONS PROGRAMS (COMPUTERS); MATHEMATICAL MODELS; SIKORSKY WHIRLWIND HELICOPTER; FLIGHT TESTS; STEADY STATE; ACOUSTIC MEASUREMENT; DESCENT TRAJECTORIES; DECELERATION...