CN201955968U

CN201955968U - Airplane taking-off principle demonstrator

Info

Publication number: CN201955968U
Application number: CN2011200306362U
Authority: CN
Inventors: 呼格吉乐
Original assignee: Huzhou University
Current assignee: Huzhou University
Priority date: 2011-01-28
Filing date: 2011-01-28
Publication date: 2011-08-31
Anticipated expiration: 2021-01-28

Abstract

The utility model belongs to a teaching apparatus, and particularly relates to an airplane taking-off principle demonstrator. The demonstrator comprises a body (1), a bracket (2) and a wind source (3). The bracket (2) and the wind source (3) are arranged on the body (1). An airplane model (3) is suspended on the bracket (2). The wind source (3) is dead against the airplane model (4). The lower aerofoil surfaces (41) of the airplane model (4) are flat, and the upper aerofoil surfaces (42) of the airplane model (4) are arched. The front aerofoil ends (43) of the airplane model (4) are blunt, and the rear aerofoil ends (44) of the airplane model (4) are sharp. The demonstrator is simply structured, convenient and easy to operate and remarkable in effect, enables students to visually see details in the taking-off of an airplane, and enriches teaching contents and teaching means.

Description

Take off principle demonstration instrument

Technical field

The utility model belongs to instruments used for education, particularly a kind of principle demonstration instrument of taking off.

Background technology

The development of aerospace industry has brought great vitality to communication.From 1877, the Dayton area in the U.S., Lai Te brother drive the mankind in history first airplane fly and successfully begin, the Heaven of space shuttle spaceship has all stayed fine one page to history till now.But, also have a lot of people not understand aircraft now and why can fly.In order to allow people, students in middle and primary schools particularly understand the principle of taking off of aircraft better, and exploitation is taken off principle demonstration instrument and had the comparison realistic meanings.

The utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of principle demonstration instrument of taking off is provided, the state that this demonstrator energy visual simulation is taken off.

To achieve these goals, the technical solution of the utility model is as follows: a kind of principle demonstration instrument of taking off, it comprises body, support, wind regime, support and wind regime are arranged on the body, hang model aircraft on the support, and wind regime is over against model aircraft, the wing lower surface of model aircraft is smooth, the upper surface of the airfoil of model aircraft arches upward, and the wing nose circle of model aircraft is blunt, and the wing rear end of model aircraft is sharp-pointed.

Because the wing lower surface of model aircraft is smooth, upper surface of the airfoil arches upward, and when air-flow oncoming flow wing, is originally that one air-flow is divided into two strands up and down, and air communication overlaps into one again after crossing wing.Because upper surface of the airfoil arches upward, make the channel narrows of that strand air-flow that is positioned at the top.Continuity principle and Bernoulli's theorem according to air-flow can be learnt, the pressure of wing top is littler than the pressure of wing below, that is to say, the wing lower surface is subjected to upwarding pressure, and to be subjected to downward pressure than upper surface of the airfoil big, like this, model aircraft just can be toward rising.Because the wing nose circle is blunt, the wing rear end is sharp-pointed, and according to same principle, model aircraft just can be towards the direction flight of wind regime.

As further technical scheme, described support comprises montant, cross bar and hanging stick, cross bar is inserted on the montant and can rotates in montant, hanging stick is set on the cross bar, the mid point of hanging stick is fixed on the cross bar, and hanging stick hangs model aircraft near an end of wind regime, and hanging stick hangs weight away from an end of wind regime, when wind regime was static, hanging stick kept horizontality.

When wind regime was static, hanging stick kept horizontality.When wind regime was blown, the model aircraft rise came, and hanging stick just tilts toward weight one end, can guarantee model aircraft stablizing when taking off with state of flight like this.

The utility model is simple in structure, operates easyly, and effect is obvious, makes the student can see details when taking off intuitively, has enriched the content of courses and teaching means.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the cut-open view of the utility model wing.

Embodiment

Embodiment 1

As Fig. 1, shown in Figure 2, a kind of principle demonstration instrument of taking off, comprise body 1, support 2, wind regime 3, support 2 is arranged on the body 1 with wind regime 3, support 2 comprises montant 5, cross bar 6 and hanging stick 7, cross bar 6 is inserted on the montant 5 and can rotates in montant 5, hanging stick 7 is set on the cross bar 6, the mid point of hanging stick 7 is fixed on the cross bar 6, and hanging stick 7 hangs model aircraft 4 near an end of wind regime 3, and hanging stick 7 hangs weight 8 away from an end of wind regime 3, when wind regime 3 is static, hanging stick 7 keeps horizontality, and wind regime 3 is over against model aircraft 4, and the wing lower surface 41 of model aircraft 4 is smooth, upper surface of the airfoil 42 arches upward, wing front end 43 circles are blunt, and wing rear end 44 is sharp-pointed, and the open and close of wind regime 3 are by switch 9 controls that are arranged on the body 1.

Claims

1. take off principle demonstration instrument for one kind, it is characterized in that: it comprises body (1), support (2), wind regime (3), support (2) is arranged on the body (1) with wind regime (3), support (2) is gone up and is hung model aircraft (4), wind regime (3) is over against model aircraft (4), the wing lower surface (41) of model aircraft (4) is smooth, the upper surface of the airfoil (42) of model aircraft (4) arches upward, wing front end (43) circle of model aircraft (4) is blunt, and the wing rear end (44) of model aircraft (4) is sharp-pointed.

2. a kind of principle demonstration instrument of taking off as claimed in claim 1, it is characterized in that: described support (2) comprises montant (5), cross bar (6) and hanging stick (7), cross bar (6) is inserted in montant (5) and goes up and can rotate in montant (5), hanging stick (7) is set on the cross bar (6), the mid point of hanging stick (7) is fixed on the cross bar (6), hanging stick (7) hangs model aircraft (4) near an end of wind regime (3), hanging stick (7) hangs weight (8) away from an end of wind regime (3), when wind regime was static, hanging stick (7) kept horizontality.