Resarch On The Flexible Wings Flapping Wing Aircraft And Drive Mechanism

The flapping wing vehicle attracting wide attention because of it’s different flight stytles, flapping flight can not only produce lift force but also produce the thrust force. This fly stytle has good maneuverability, high flight efficiency and the feature of compact structure.In order to reveals the unsteady aerodynamics theory of flapping wing flight mode, and applicate this theory to the design of Bionic Flapping Wing flying robot, we based on the summary of the existing theory of aerodynamics in flapping flight, from the aspect of bionics, aerodynamics and mechanical to research the flapping wing flight aerodynamic mechanism, structure design, wings flutter flight trajectory description, flapping robot driving mechanism design and the wing aerodynamic characteristics in details.The wing is considered as a flexible wing, and its dynamic performance is studied to explore the response of the motor under the given excitation function. Analysis shows that the response function can be well adapted to flapping wings, but the wing distortion mutations, is not well to the stability of the structure, and also cannot provide enough lift force.In order to mimic bees flying trajectories, from simple to complex, this atritle have designed the ∞ stytle driving mechanism in plane and the ∞ stytle drive mechanism in three-dimensional space. For the ∞ stytle driving mechanism in plane, we use harmonic characteristic parameters mathematical model, by extracting four linkage coefficients in the complex range, to creat a numerical atlas of four bar linkage mechanism, and using fuzzy clustering model, to completed of the preliminary design of linkage parameters. After solving the dimension of the rod element, set up the pole piece translation matrix, the rotation matrix and the scaling matrix respectively to calculate the installation dimensions. Finally, we designed all parameter of the linkageof the flapping drive mechanism, and analysis these drive mechanism’s kinematics.For the three-dimensional space type driving mechanism, according to the characteristics of the flight trajectory in the surface of sphere, we using RRRRS spatial five bar and five pair of driving mechanism, and complete the three-dimensional design of driving mechanism. The simulation analysis shows that the trajectory of the flight is in good adapt to the ideal trajectory.To the aerodynamics of flapping flight, we focus the research on insects from the body structure, wing structure, wings flutter resistance, eliminate the energy loss, and elaborate the principle comprehensively. The research results show that compared with the fixed wing and rotary wing flight, flapping flight stytle in the save of energy is more higher, especially in low speed, low Reynolds number condition.