The Utilization of High Fidelity Simulation in the Support of UAV Launch Phase Design: Three Case Studies

Improvement of the launch phase of a jet powered Unmanned Aerial Vehicle (UAV) with Jet Assisted Take Off (JATO), has been the subject of attention in the UAV industry. Use of flight simulation tools reduces the risk and required some amount offlight testing for complex aerospace systems. In this research, full nonlinear equations of motion are used to study and simulate this maneuver and three case studies of their application to UAV launch phase problems are presented. Attempt is also made to explain some aspects that were not definite in the test by simulation. The result of the examination is satisfactory. The second and third examples involve the flight test of the UAV. These two applications are typical of launch phase problems. The second example demonstrates a good applicability of this technique to improve and increase the stability ofthe UAVduring launch. In the third example, the UAV in the presence of headwind shows that the simulation and real test have a good coincidence.