The Air Force uses the TGP program as its primary tool for predicting store trajectories on the basis of wind tunnel grid data. The US Navy uses NAVSEP, which is based on an earlier version of the TGP code. Both codes are based on the AEDC Multi-Dimensional Interpolation Trajectory Generation Program, and have undergone numerous improvement/modifications during the past 15 years. The U.S. Navy and Air Force have also recently acquired Store Trajectory Estimation in a MATLAB Environment (STEME) code from the Australian Air Force. NAVAIR is in the process of preparing a flight clearance for the High Speed Antiradiation Demonstrator (HSAD) program. This clearance will be prepared using the conventional tool NAVSEP. The HSAD missile, however, utilizes an autopilot to move four movable control fins shortly after release as it rapidly accelerates in flight speed. It would be highly desirable to fully account for these elements in the release simulation using either NAVSEP, TGP, or STEME. NAVSEP, TGP have amassed a long lineage of wind tunnel data, flight simulation predictions, and flight test data with which to perform code validation and verification. Therefore, new developments should preserve as much backward compatibility as possible with existing TGP codes while improving and developing user interfaces and increasing functionality. In conjunction with the conventional NAVSEP approach to clear the HSAD missile, it would be desirable to test the TGP and STEME codes for the same case. It would be desirable to develop the general methodology to integrate the current 6 DOF analysis approaches with the proposed MATLAB/Simulink auto-pilot environment. The Navy is currently involved in developing the joint-service Joint Common Missile with Lockheed. Both FLIP TGP and NAVSEP codes coupled with MATLAB/Simulink will be tested for this particular missile. Recently, a Beggar approach with hard-coded autopilot has been practiced.


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