An Integrated, Modular Simulation System for Education ... - Cal Poly

The model assumes a trim alpha angle and balanced initial moments. Theprogram will require changes to include the trim alpha and initial moments to determinethe trim elevator position.The point mass model can model-fixed wing aircraft, spacecraft, and basicdynamics of rotorcraft (without the rotor dynamics). The atmosphere model extends highenough to allow aircraft that require reaction controls to be tested.The input for the model is a ASCII text file in the format of the Standard AircraftData SAD file. The filename is set by double clicking on the 6-DOF block and changingthe name in the parameter block for the function. The block was initially tested outputtingonly the position and orientation states. After working with the model it was found that itis desirable to output all the states available and to separate some of the inputs to separatefunctions (Figure 18.). The density of the atmosphere was sent in as a input from aseparate function to allow more simple or more complex models of the atmosphere to beadded. Additional forces and moment inputs (Figure 18) have been added to allow formore complex components to be added such as landing gear. The additional force andmoment inputs allow for turbulence, transonic and supersonic aerodynamics, non rigidbody dynamics as well as rotorcraft blade element dynamics to be included.57