Transactions of Nanjing University of Aeronautics & Astronautics
Modeling and Simulation for Refueling Boom and Receiver in Coupled Mode
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Abstract:
In coupled mode, the major problem of boom refueling system is undesirable nozzle loads. An automated load alleviation system (ALAS) is needed to alleviate nozzle loads. In order to simulate dynamic of the system and to validate ALAS, dynamic model is developed. Two models are established, which are the static model and the moving model, named after the two relative states between the fixed boom and the extension boom. Kane method is employed as main method considering system′s multi-body characteristics. D′Alembert′s principle is used to calculate nozzle loads. Simulation is conducted to research the effects of position disturbance and velocity disturbance on nozzle loads. Results indicate that position disturbance plays a more significant role in inducing nozzle loads. A fuzzy control law based ALAS is validated using the formulated model. It is concluded that this model can simulate system dynamic and validate ALAS.
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