What aviation knowledge is suitable for primary school students?

Astronauts inevitably have to go to the toilet when they enter space. Shepard, the first American astronaut, wanted to go to the toilet before the launch of the space capsule, and was ordered by the commander to pee in his spacesuit.

In 1980s, Dr. Tang Xinyuan, a scientist from China, improved the spacesuit by adding super absorbent resin and one-way leakage surface coating, which solved this problem. This material is the prototype of diapers that we often use for children later.

2. Dried vegetables

Instant noodles always contain a bag of dehydrated vegetables. This technology was originally invented to let astronauts eat space food containing vegetables. After all the water in the vegetables is removed by dehydrated vegetables, the weight will be reduced by 20%, but at the same time, 98% of the nutrients can be retained.

3. Air cushion sneakers

In 2004, the 35th anniversary of Apollo landing on the moon, Nike released a pair of shoes with Apollo landing as the theme. Now, the "hollow blow molding" technology used in air-cushion sports shoes is the technology used when Apollo planned to develop moon boots. This technology can make a complete upper quickly and efficiently, and is widely used in the manufacturing process of sports shoes.

4. Inertial reference assembly IRU

It sounds mysterious and high-end It is mainly used to keep the machine stable. In daily life, IRU is installed in automobile airbag excitation device, mobile phone inclination sensor, numerical control machine tool, camera rocker arm and optical image stabilization, and the price of civilian version is also very beautiful, only a few dollars.

5. Aerospace materials

Al-Mg alloy, titanium alloy and other composite materials are the products of aerospace science. Nowadays, it is widely used in daily necessities such as suitcases and pressure cookers.