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Airplane lift demonstration instrument for physics teaching

A demonstration instrument and aircraft technology, applied in the field of experimental instruments, can solve the problems of simplicity, lack of realism and visibility, and achieve the effect of complete structure, improved visibility and intuitiveness, and clear information

Inactive Publication Date: 2011-04-20
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Make it overcome the relatively crude and lack of realism and visibility of the existing demonstration experiment device

Method used

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  • Airplane lift demonstration instrument for physics teaching
  • Airplane lift demonstration instrument for physics teaching
  • Airplane lift demonstration instrument for physics teaching

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] This embodiment is an aircraft lift demonstrator used for physics teaching. The aircraft lift demonstrator comprises: a shroud 1, a blower fan 2, a base plate 3, a streamer 5, a model aircraft 4 and a slide rail 6.

[0018] figure 1 The wing sectional view of the aircraft lift demonstrator of the present invention is shown, which expresses the principle of aircraft lift generation. Since the upper surface of the airfoil profile is curved and convex and the lower surface of the wing is smooth and flat, when the aircraft and the airflow are in relative motion, the airflow that flows over the upper surface of the airfoil profile flows at the same time. The air flow on the upper surface has a longer distance than the air flow on the lower surface, so the relative velocity of the air flow on the upper surface is greater than that on the lower surface. Airflow on the upper surface exerts less pressure on the wing than on the lower surface, thus creating lift.

[0019] Such...

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PUM

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Abstract

The invention relates to an airplane lift demonstration instrument for physics teaching, comprising a fairing, a fan, a bed plate, a slide rail and a model airplane. When the fan is started to generate an air flow at a larger speed, a relative motion is generated between the air flow and the wings of the stationary model airplane which is installed in the transparent fairing, an upward lift is generated because of the special shapes of the wings, the whole model airplane is about to rise upward and vertically along the slide rail, a streamer flaps along with the air flow behind an empennage, and thus, the generation process of airplane lift is demonstrated. By using the invention, the generation process of the airplane lift can be demonstrated visually and completely, visibility and visual ity vivacity are improved, and the instrument is particularly suitable for demonstration experiments in teaching.

Description

technical field [0001] The invention relates to an experimental instrument used for middle school physics teaching experiments, in particular to an aircraft lift demonstrator used to demonstrate the principle of aircraft lift generation. Background technique [0002] The content of aerodynamics is involved in middle school physics courses, but it is difficult for students to fully understand the relevant content through purely theoretical explanations. The aircraft lift demonstrator can visually and vividly verify these theories, and the demonstration of the demonstration instrument or demonstration device can make students deeply understand and keep these relevant knowledge in mind. An aircraft is an aircraft heavier than air, so it needs to consume its own power to obtain lift, and the lift of an aircraft comes from the action of air on its wings during flight. When the aircraft flies in the air at a speed less than the speed of sound, the density of the surrounding air d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/08
Inventor 叶军
Owner NORTHWESTERN POLYTECHNICAL UNIV
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