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Vehicle dynamics and control, have always been core competencies of Systems Technology.
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This led to the concept of the HLA consisting of four helicopters attached to an airship hull by a tube frame. A prototype, the Piasecki PA-97 Heliostat, was constructed to test the concept. Unfortunately the vehicle crashed ending the program. However, Systems Technology received a contract to develop a nonlinear digital simulation of the vehicle. In addition we performed extensive analysis of the dynamics and control issues of the HLA using the simulation and other analysis techniques.