Abstract
bymeansoftwobridlelineswithmovableattachmentpoints.Thispaperpresentsareductionofthissystemtoarigidbody approximation. This process is performed in two stages: a state reduction and a model identification. The state reduction decreases the large number (400) of degrees of freedom of the multibody system to the six degrees of freedom of an equivalent rigid body onthe basis of conservation of momentum. The modelidentificationdetermines the aerodynamic and structural characteristics for the rigid-body model on a parametric basis. The flexibility of the inflatable kite is taken into account using variable aerodynamic derivatives and a quasi-static structural model. The state reduction is assessed by means of an error criterion. Simulation shows that the error is negligible. The rigidbodymodelisvalidated forsymmetric flightmaneuvers, comparing themultibody-system andrigid-bodyresponses subject to small perturbations.
Published Version
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