CN203982640U

CN203982640U - Wing model

Info

Publication number: CN203982640U
Application number: CN201420203064.7U
Authority: CN
Inventors: 夏先玉; 吴泽宇; 杨铖; 黄新; 潘雪
Original assignee: Chongqing Real Estate College
Current assignee: Chongqing Real Estate College
Priority date: 2014-04-24
Filing date: 2014-04-24
Publication date: 2014-12-03
Anticipated expiration: 2024-04-24

Abstract

A kind of wing model, it is characterized in that: described wing consists of lower wing body and top wing body two parts that can be separated, the upper surface of described lower wing body, with lower surface be burnishing surface, the upper surface of described top wing body is outwardly projecting surface, the lower surface of described top wing body is burnishing surface, and the upper surface of the lower surface of described top wing body and lower wing body is of similar shape and size, so that top wing body can overlap lower wing body above, thereby fit into complete wing flat under epirelief.Separation and stickup " top wing body ", can change the upper surface shape of wing, airplane ascensional force could be described convincingly because the shape of upper surface evagination causes flow velocity to accelerate to cause, and then get a real idea of the relation between fluid pressure and flow velocity, be conducive to cultivate the scientific exploration spirit that student's practical work is asked.

Description

Wing model

Technical field

The utility model relates to a kind of physics educational apparatus, especially for the wing model of the relation between Study of Fluid pressure and flow velocity.

Background technology

In junior physics course, in the process of the relation between Study of Fluid pressure and flow velocity, teaching difficulty is to understand the reason that airplane ascensional force produces, existing experimental provision as shown in Figure 1, on wing 5, have the through hole 6 running through up and down, in through hole 6, be plugged with guide pole 4, to limit wing 5, can only slide up and down along guide pole 4, guide pole is fixed on base 1; Power-on, the air-flow that blower fan 2 is sent blows to wing 5; Because the upper surface of wing 5 is outwardly, thus air-flow by time process distance elongated, air velocity is accelerated, pressure reduces; The lower surface of wing 5 is smooth, air-flow by time process distance short, gas flow rate is relatively slow, pressure is large; So wing 5 is subject to pressure difference upwards, Here it is, and wing is subject to the reason to raising force.

To above-mentioned physics reason without enough understanding, the understanding of airplane ascensional force also becomes the difficult point of teaching to a lot of students, always like this for many years, and applicant analyzes, and the elusive reason of students is: the wing of above-mentioned experiment is all that under epirelief, level land is unalterable; And according to the requirement of control variate method in scientific research, show that the generation of lift causes because wing shapes have changed air velocity, need to be when other condition be constant, change wing shapes, observe the variation of lift, ability is convincing, also just can overcome student's the disturbance of thought.Obviously, above-mentioned existing wing can not meet above-mentioned requirements, is unfavorable for cultivating student's scientific exploration spirit practically.

Utility model content

For addressing the above problem, the purpose of this utility model is: a kind of wing model is provided, the shape of this wing top can be changed easily between " smooth " and " evagination ", to observe when the shape of upper surface of the airfoil changes, whether whether wing also can move along bar, thereby judge lift, produce because flow velocity is different.

The technical scheme that the utility model adopts is: a kind of wing model, it is characterized in that: described wing consists of with top wing body 9 two parts lower wing body 8 that can be separated, the upper surface of described lower wing body 8, be burnishing surface with lower surface, the upper surface of described top wing body 9 is outwardly projecting surface, the lower surface of described top wing body 9 is burnishing surface, and the upper surface of the lower surface of described top wing body 9 and lower wing body 8 is of similar shape and size, so that top wing body 9 can overlap lower wing body 8 above, thereby fit into complete wing flat under epirelief.

Described lower wing body 8 is made by foamed material with top wing body 9, the lower surface of described top wing body 9, has a plastic foil with the upper surface of lower wing body 8 is all topped, and described plastic foil is provided with pastes top wing body 9 and lower wing body 8 for whole double faced adhesive tape.

Adopt after said structure, separated top wing body, only tests with lower wing body, can see wing transfixion under wind-force effect; Top wing body is sticked on lower wing body and tested, and wing moves up along guide pole at once.

The beneficial effects of the utility model are: by separated and stickup " top wing body ", can make easily the upper surface shape of wing change between " smooth " and " evagination ", and then observe different experimental phenomenas, airplane ascensional force could be described convincingly because the shape of upper surface evagination causes flow velocity to accelerate to cause, and then get a real idea of the relation between fluid pressure and flow velocity, be conducive to cultivate the scientific exploration spirit that student's practical work is asked.

Accompanying drawing explanation

Fig. 1 is the structure drawing of device of existing airplane ascensional force experiment;

Fig. 2 is structure cut-open view of the present utility model;

Fig. 3 is decomposing schematic representation of the present utility model;

In figure: 1 base, 2 blower fans, 3 air outlets, 4 guide poles, 5 wings, 6 through holes, 7 cross support arms, 8 lower wing bodies, 9 top wing bodies, 10 double faced adhesive tapes.

Embodiment

As shown in Figure 2 and Figure 3, wing 5 consists of with top wing body 9 two parts lower wing body 8 that can be separated; Upper surface and the lower surface of lower wing body 8 are burnishing surface; The upper surface of top wing body 9 is outwardly projecting surface, and lower surface is burnishing surface.

The upper surface of the lower surface of top wing body 9 and lower wing body 8 is of similar shape and size, so that top wing body 9 and lower wing body 8 can overlappingly be complete wing, the upper surface of the lower surface of top wing body 9 or lower wing body 8 is topped to be had plastic foil and is provided with double faced adhesive tape 10.

Claims

1. a wing model, it is characterized in that: described wing consists of with top wing body (9) two parts lower wing body (8) that can be separated, the upper surface of described lower wing body (8), be burnishing surface with lower surface, the upper surface of described top wing body (9) is outwardly projecting surface, the lower surface of described top wing body (9) is burnishing surface, and the upper surface of the lower surface of described top wing body (9) and lower wing body (8) is of similar shape and size, so that top wing body (9) can overlap lower wing body (8) above, thereby fit into complete wing flat under epirelief.

2. wing model as claimed in claim 1, it is characterized in that: described lower wing body (8) is made by foamed material with top wing body (9), the lower surface of described top wing body (9), have a plastic foil with the upper surface of lower wing body (8) is all topped, described plastic foil is provided with pastes top wing body (9) and lower wing body (8) for whole double faced adhesive tape.