AcSim: Aircraft Simulation Program with Application to Flight Profile Generation.

摘要

Program AcSim was designed to be used in conjunction with a flight profile generator program (FPG2) which is used with an Inertial Navigation System simulator. Both AcSim and FPG2 were written in FORTRAN-77 on an ELXSI System 6400. AcSim is implemented as a subroutine of FPG2 and is called if the user selects a dynamic maneuver segment to be performed. AcSim calculates the dynamic state of an aircraft for a sequence of user specified control surface deflections. The aircrafts linear accelerations and angular velocities are sent back to FPG2 for subsequent processing. A six-degree-of-freedom model is used to simulate the user-defined aircraft. AcSim implements a State Vector approach to solve the non-linear equations of motion simultaneously using a 4th order Runge-Kutta scheme. An optional Eigen Analysis can be performed which provides the user with the longitudinal and lateral characteristic equation, their roots (eigen values), transfer functions and unit impulse response functions for the given flight condition. Australia. (JES)