Demonstration experiment device for hosting wings with same wing types and different incidence angles by lifting force
An experimental device and angle of attack technology, which is applied in the fields of hydraulics and engineering fluid mechanics, can solve the problems of immobile wings, high power consumption of wind tunnels, and large volume, and achieve low cost, good visibility, and small volume. Effect
Inactive Publication Date: 2011-03-09
HOHAI UNIV
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Problems solved by technology
The wind tunnel of the existing experimental device consumes a lot of power, is noisy, has many accessories, and the lift force on the wing cannot be quantified, and the wing cannot move in the direction of the lift force
This kind of experimental device with immobile wings, poor visibility, high noise, high cost, and large volume is difficult to promote in hydraulic and fluid laboratories, hydraulic and fluid research institutes in colleges and universities, and science palaces for popular science education.
Method used
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[0011] Control attached figure 1 , the water pump 2 is located in the water storage tank 1, the water outlet of the water pump 2 is connected with the negative pressure water inlet pipe 3, the negative pressure water inlet pipe 3 is provided with an air intake control valve 4, and the front end of the first-stage diverter plate 5 is arranged on In the negative pressure water inlet pipe 3, the second splitter plate 6 is set between the first splitter plate 5 and the third splitter plate 7, and the third splitter plate 7 is arranged on the same type wing 9 with the first angle of attack on the left side and the right wing. On the symmetry line between the same-type wings 13 with the second angle of attack, the angle of attack of the same-type wing 9 with the first angle of attack is one degree, two degrees or three degrees, etc., and the same-type wing 13 with the second angle of attack For seven degrees, eight degrees or other arbitrary angles, in the present embodiment, the an...
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The invention discloses a demonstration experiment device for hosting wings with the same wing types and different incidence angles by a lifting force, which comprises wings, wing sliding rails, a wing support, a sliding pulley, a draw bar, a compression bar, a dynamometer, a water storage tank, a negative pressure water inflow pipe, an air inflow control valve, a first-level splitter plate, a second-level splitter plate, a third-level splitter plate, a fourth-level guide plate and a back pressure energy dissipation plate. Compared with the traditional technique, the invention has the advantages that the device can dynamically compare turbulence change and pressure change of the upper surface of the wings with different incidence angles and visually embody the movement process of the wings, and has no noise pollution, low cost and small volume; and the device is suitable to be popularized in hydraulic power and fluid experiments of colleges and universities, hydraulic power and fluid scientific research institutions and science palaces for science popularization education.
Description
technical field [0001] The present invention is a demonstration experimental device designed for lifting the wing at different angles of attack of the same airfoil, and under the condition of no wind tunnel test bench, the demonstration experiment of lifting the wing at different angles of attack of the same airfoil can be carried out by using the device of the present invention . It belongs to the technical field of hydraulics and engineering fluid mechanics. Background technique [0002] Existing demonstration experiments on lift-boosting wings with the same airfoil and different angles of attack are carried out on the wind tunnel test bench, relying on the wind tunnel to provide uniform and constant velocity flow. In the test, the wing fixed on the support backplane is at the outlet In the area of uniform constant velocity wind, observe the change of streamline when the uniform constant velocity flow bypasses the wing, and use the density between streamlines to qualita...
Claims
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IPC IPC(8): G09B23/12
Inventor 刘孝洋
Owner HOHAI UNIV