Abstract
Half-rotating wing (HRW) is a kind of similar-flapping wing system based on half-rotating mechanism which could perform rotating-type flapping instead of oscillating-type flapping. Contralateral-type half-rotating wing (CHRW) could run more steadily and smoothly than previous HRW by newly layout of local constraint that mainly consists of moving sheet, circular stator and straight stator. The work principle of CHRW were firstly given in this paper. The design method of key parts local constraint in CHRW was proposed. The contact force model and smooth running condition of moving sheet were especially derived from contact model between moving sheet and circular stator and geometric relation model between moving sheet and straight stator. On the other hand, compared result between theoretical calculation and simulation verified the correctness of contact force model. After optimizing the parameters of some parts of local constraint, the value of contact force was greatly reduced to improve operation stability of CHRW. The research results mentioned above could provide theoretical guidance for design structure of CHRW.
Highlights
Flapping-wing air vehicle has been a topic of considerable interest due to its excellent maneuverability and hovering ability [1]
The "MFI" flapping wing aircraft [5] was from University of California at Berkeley, and a controllable flight flapping-wing machine has successfully developed by Nanjing University of Aeronautics and Astronautics [6]
The constralateral-type half-rotating mechanism (CHRM) was shown in Figure 2, which was composed of moving sheet, straight stator and circular stator
Summary
Flapping-wing air vehicle has been a topic of considerable interest due to its excellent maneuverability and hovering ability [1]. The "Micro Bat" [2,3] was developed by California Institute of Technology, and the "DELFLY" [4], a micro flapping wing aircraft, was manufactured by Delft University of the Netherlands. Driving mechanism is the core component of air vehicle, while excellent driving mechanism is benefit for the stability of aircraft and the reduction of energy consumption. At present, it is difficult for the flapping-wing driving mechanism to get the component simplicity and driving symmetry, which affect the stability of movement and the development of large scale.
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