實驗目的：
1、 認識伯努利原理。
2、研究機翼迎風上升的現象。
實驗器材：
機翼模型、鼓風機。
實驗過程：
1、將鼓風機電源的插頭插入座內，將出風口對著機翼下端，按住開關吹，注意觀察。
2、握住把手，邊吹邊抬起出風口，注意觀察。
3、然后，再邊吹邊降低出風口，注意觀察。
探究問題：
1、氣流吹機翼的下部，機翼能否被吹起來？
2、氣流吹機翼的上部，機翼能否被吹起來？
3、機翼為什么做成流線型？
4、機翼獲得向上的力是從哪里來的？
5、機翼獲得向上力的大小與氣流的流速有關嗎？
實驗結論與體會：
（以下由學生總結并交流，也可由教師引導得出。）
注意事項：
應將鼓風機出風口緩慢向上抬起。一人操作，其他人員遠離儀器并注意觀察。
A demonstrator for the rising force of the airfoil
Experimental purpose:
1. Understanding the Bernoulli’s principle
2. Researching the phenomena of the airfoil rising in the wind
Experimental equipment:
The model airfoil, blower
Experimental process:
1.Insert the plug into the electrical outlet, and the wind faces the bottom of the airfoil. Turn on the switch and observe carefully.
2.Hold on the handle. Blow and lift the outlet of the wind. Observe carefully.
3.Then blow and fall the outlet of the wind.
Researching issues:
1.Whether is the airfoil blown up when the airflow blows the bottom of the airfoil?
2.Whether is it blown up when the airflow blows the upper of it?
3.What is the reason that the airfoil is streamline figure?
4.Who brings the force that promotes the airfoil upward?
5.Is there a relationship between the speed of the airflow and the force?
Experimental conclusions and the experience:
The followings can be concluded and discussed by the students, or guided to get by the teachers.
Caution:
Lift the outlet of the wind slowly for the blower. One person does practice, and the others keep away from the instrument.
