Structural layout method of rice-shaped anti-torque rudder
A technology of structural layout and anti-torque, applied in aircraft parts, ground installations, transportation and packaging, etc., can solve the problem that the anti-torque rudder of ducted UAV is not unified, and the influence of aerodynamic characteristics has no clear analysis results. It is impossible to fully improve the aerodynamic characteristics and stability of the UAV to achieve the effect of improving the aerodynamic efficiency and meeting the demand for anti-torque
Active Publication Date: 2014-10-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
[0004] At present, the layout of the ducted UAV anti-torque rudder has not yet formed a unified scheme and overall design ideas. Most of the research teams at home and abroad have not conducted detailed analysis and demonstration on the uniform distribution of anti-torque rudders. The influence of parameters such as the number of directional arrays and the included angle of rudder blades on its overall aerodynamic characteristics has not yet been clearly analyzed.
As a result, most of the current layouts of ducted UAV anti-torque rudders cannot make full use of their aerodynamic characteristics, and cannot fully improve the overall aerodynamic characteristics and stability of UAVs.
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[0028] see figure 1 , a kind of rice-shaped anti-torque rudder structural layout method, it is based on a kind of rice-shaped anti-torque rudder, the rice-shaped anti-torque rudder includes a plurality of anti-torque rudders; The central axis of the body is the center of the circle, and the radial radiation is arranged outward; the high-strength carbon tube for fixing the anti-torque rudder passes through the 1 / 4 chord length of the rudder blade near the leading edge, and both ends of the carbon tube are connected by bearings; one side is fixed to the culvert The beam on the road wall is driven by the steering gear, and the other end is fixed on the central axis of the UAV fuselage;
[0029] The structural layout method of the rice-shaped anti-torque rudder includes the following steps:
[0030] In the first step, the airfoil of the anti-torque rudder is selected to obtain the torque τ of the anti-torque rudder;
[0031] In the second step, the engine torque Q is obtained by...
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The invention belongs to the field of aircraft structure design, and in particular relates to a structural layout method of an anti-torque rudder. The present invention provides a layout method of an anti-torque rudder, which can be applied to a small ducted unmanned aerial vehicle; it is based on a rice-shaped anti-torque rudder, and is characterized by: The required number n of anti-torque rudders, the steps of analyzing and determining the arrangement of anti-torque rudders, determining the distance between anti-torque rudders and paddle disks, determining the installation method of anti-torque rudders, and designing anti-torque rudders; through theoretical and experimental demonstration, Using this method, the anti-torque rudder with reasonable structure and practical application can be designed more conveniently.
Description
technical field [0001] The invention belongs to the field of aircraft structure design, and in particular relates to a structural layout method of an anti-torque rudder. Background technique [0002] The thrust provided by the engine of the small single-blade ducted UAV realizes flight actions such as vertical take-off and hovering. At the same time, the rotation of the rotor also generates a torque around the central axis of the vertical aircraft, which will seriously affect the stability of the UAV. and reliability. [0003] Single-propeller fixed-wing aircraft overcome the influence of propeller spin by shifting the center of gravity or adjusting the thrust line of the engine, and single-rotor helicopters use the tail rotor to balance the torque generated by the main propeller. Due to its own structural characteristics, small single-blade ducted UAVs usually use a set of anti-torque rudders to achieve torque balance. Deflection in the same direction, under the action of...
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IPC IPC(8): B64F5/00
Inventor 张威吴炎烜刘志军徐旻李陈
Owner BEIJING INSTITUTE OF TECHNOLOGYGY