The work traces a general procedure for the design of a flight simulation tool still representative of the major flight physics of\r\na parachute-payload system along decelerated trajectories. An example of limited complexity simulation models for a payload\r\ndecelerated by one or more parachutes is given, including details and implementation features usually omitted as the focus of\r\nthe research in this field is typically on the investigation of mission design issues, rather than addressing general implementation\r\nguidelines for the development of a reconfigurable simulation tool. The dynamics of the system are modeled through a simple\r\nmultibody model that represents the expected behavior of an entry vehicle during the terminal deceleration phase. The simulators\r\nare designed according to a comprehensive vision that enforces the simplification of the coupling mechanism between the payload\r\nand the parachute, with an adequate level of physical insight still available. The results presented for a realistic case study define the\r\nsensitivity of the simulation outputs to the functional complexity of the mathematical model. Far from being an absolute address\r\nfor the software designer, this paper tries to contribute to the area of interest with some technical considerations and clarifications.
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