Resarch On The Flexible Wings Flapping Wing Aircraft And Drive Mechanism

Compared with the traditional fixed-wing aircraft and rotorcraft, the main features of bionic flapping-wing aircraft is in the flutter of wings to generate lift and thrust simultaneously, while also having a high efficiency, good mobility, low noise, no takeoff and landing characteristics specifically multiple venues. Therefore, the researchers designed and developed bionic flapping-wing aircraft has a very important scientific significance, but also has a wide range of applications, researchers developing countries in this area are very concerned about.Research summary of relevant literature at home and abroad to retrieve insects and birds flying through the mechanism, from bird wings and insect wings constructed starting their flight mechanism were analyzed, in particular generate high lift of insect flight status with several Mechanism progress through comparative analysis differences insects and birds flapping wing flight between proposed in this paper is to study the flexible wings flapping wing aircraft and drive mechanism, focusing on the basis of imitating insect flapping wing flight carried up the theory.By comparing the advantages and disadvantages of the current drive mechanism, using Solidworks modeling technology, selected by the DC motor driven crank rocker mechanism, as this paper flapping wing aircraft for the drive mechanism, select and calculate the motor to match the two cylindrical parameters gear reducer. Drive mechanism will be established in Solidworks model import Adams, the use of Adams kinematics simulation module for different programs designed kinematics simulation, and the simulation results are analyzed in order to obtain the optimal parameter solution.Learn Fluent CFD computational fluid dynamics software to use, and the use of user-defined function(UDF), conducted by the C programming language secondary development of the use of the software. By using Spalart-Allmaras model, while the enhanced wall function requirements, the use of ICEM CFD rules in the outer wall of division Exponentioal2 wings models do a special deal, get to insect wings in motion when the two-dimensional flow field grid.Fluent calculated using simulated flow field around the wings, get wings flutter in the process of lift and drag characteristics. By comparing the characteristics of lift and drag characteristics of single degree of rigidity between the wings and the flexible wings, and come in with the same initial conditions and exercise, compared with rigid wings, flexible wings lift in even somewhat under the decline, the horizontal direction by the resistance force into a thrust in the process of improving the efficiency of this conclusion wings flutter.