Computational analysis of longitudinal dynamic stability for very light airplane

A linearized analytic model of general longitudinal movement of airplane is discussed. Linearized deviation equations of motion, derived in stability axes system, are applied to the parametric analysis of airplane's longitudinal dynamic stability under arbitrary symmetric flight conditions. The analytic model is generated in the form of inter-active software package PODYST_ALFA. This is used to show the influence of some constructional and mass parameters on the longitudinal airplane motions after encountering disturbance for a chosen steady level flight.