Chapter 843 Application for Building 9

1.

Compared with the familiar painting creation in spring, what made spring feel helpless at the beginning was the task of the "Rejuvenating the Country through Science and Technology" Youth Science and Technology Invention Competition.

According to the document notice of the county Youth League Committee, the works of the "Rejuvenating the Country through Science and Technology" Youth Science and Technology Invention Competition must be selected, designed, researched and made by the students themselves, and the works must also have a certain degree of scientificity, advancement or practicability. These harsh regulations did make Spring feel a little difficult, since I was a child, I had never been exposed to the knowledge of scientific and technological inventions, and I really didn't know where to start.

After leading the students to consult a large number of science and technology books in the school library, the spring slowly set their sights on the creation of model airplanes, and in the selection of materials, the spring was optimistic about the waste cans that were easy to collect and easy to fiddle with.

Since it is engaged in scientific and technological creation, the first step after the idea is of course to draw drawings, although I have not been exposed to this kind of thing before spring, but spring is to learn painting, and drawing drawings can be bypassed, so it is not difficult to draw drawings. After repeated research and revisions in the spring and four students, a production drawing of an airplane model integrating ornamentation and operability was perfectly released.

People who have drawn or have been in contact with drawings know that whether it is drawings for engineering construction, machinery and equipment or other purposes, the drawings should not only use graphics to draw the structure and shape of the object, but also mark the size of each part, and also attach a concise and clear text description, in short, drawing drawings is a very technical work, and its requirements for fineness and accuracy are very high. Fortunately, the drawings made in the spring are not for others to see, as long as the spring and the students can understand it.

In order to make the parameters of these fine parts more accurate, the spring and the students not only have to draw the airplane from different angles, but also make the parts, often a tiny part of the parts to make several times, and strive for excellence and perfection.

In the last few days, the students of the science and technology invention group were given the task of collecting used cans and other waste items that needed to be used, as well as parts to make model airplanes according to the requirements and dimensional parameters of the drawings.

After the skillful production of the students in the past few days, the parts of each part of the aircraft model have been made, and the students have made several spare parts for each part, and the remaining task is to comprehensively assemble according to the drawings.

2.

The first step in making an airplane model is to use a can to make the nose of the airplane model, you need to cut off the top of the can with scissors, and then cut the bottle body into more than a dozen thin strips from the opening of the bottle body, and then press the thin strip cut by the can's bottle body outward to be parallel to the top of the can, the thin strip should be divergent, and the end of the thin strip is bent into an arc, and finally the small motor is fixed by punching holes at the bottom of the can. At this point, the propeller nose part of the aircraft model is completed.

The second step is to make the wing from scrap iron wire, bend the skeleton of the wing according to the size of the drawing with the waste iron wire collected by the students, and the joint part should be reinforced with hot melt adhesive or welding iron, and then wrap the entire wing body with the can aluminum cut from the beverage can, and in order to make the wing appear more promoted, a layer of hard cardboard or can diaphragm is added between the wing and the plastic film.

The third step is to make the fuselage with waste glass glue tanks and make the cabin with cardboard, the tools to be used are glass glue and screws and studs and other items, and the cabin should also be reserved for two No. 5 batteries, so it takes a little effort to make.

The fourth step is to make airplane wheels from waste can caps, without two cans with a set of bottle mouths, the interface should be correct, and then wrapped along the edge of the can with adhesive tape, so that three wheels should be made.

The fifth step is the assembly of the aircraft model, there is a vital link in the assembly process, that is, the nose with propeller passes through the protruding screw on the fuselage through the small hole, and the top of the screw is used to hold the nose with solder burner after wearing; In addition, there is also the fixation of the wings, in the body of the aircraft model, the long wings are two behemoths, its fixation is very important for the stability of the aircraft model when taxiing, in this regard, the spring and the students also took a lot of effort, and finally made a few vertical fixed wire posts around the wing, the upper and lower wings are supported, and the wire posts are tied with cotton threads crossed, which is equivalent to acting as a steel cable on the wing of the aircraft. In this way, no matter how the aircraft turns, the wings will not be distorted and deformed.

After all the parts are installed, a small propeller model with novel ideas, creativity and imagination, ingenious and reasonable design is completed by handmaking from waste cans, although the aircraft model can not take off, but the propellers and wheels of the aircraft can be rotated, which is a scientific and technological invention with real beauty and artistic value.

Spring believes that as long as the students can make the ideal aircraft model according to the parameters of the drawings, then the aircraft model made by the students of Toyama Middle School will definitely shine in the exhibition at the "50th Anniversary of the National Day" Youth Science and Technology Invention Competition.