"put" rocket

On the first day of the new year, the sky is clear and the wind is beautiful. It is a good weather for rocket launches! So, my father and I took out the model rocket kit purchased online at Taobao and started to make a Long March 3 rocket model. The process of launching the rocket is really "stunning" and "risk". The shock is the parachute during the recycling process. Broken a few small holes, the danger is that the rocket almost fell to the roof of the seven-story, please listen to me slowly.

The simulation model rocket is composed of three parts: the tail section, the arrow body and the head cone.

The first step, assembly: First, install the engine casing on the tail section, then insert the folded parachute into the arrow barrel section, then attach the parachute rope to the rubber band and the head cone, and finally the rocket head cone. Insert into the arrow barrel section.

The second step, launch preparation: first install the launcher, then install the engine for the rocket, and finally assemble the recycling system.

The third step, launching the air: We came to the open space of the community square, I was responsible for supporting the launcher, the rocket was placed on the launching rod through the guiding tube, and the launch angle was adjusted, and Dad was responsible for connecting the ignition controller. At this time, the audience next to me couldn’t wait to shout: "Let’s see it! The rocket is going to launch!" When Dad connected the ignition device and handed the igniter to me, I was very excited, but I was a little worried. The launch failed to destroy the hard-working model rocket. At this time, Dad saw my thoughts and encouraged me to say: "We will succeed!", I plugged the safety pin on the igniter, the indicator light turned on, I firmly pressed the launch button, at 0.000001 seconds. After that, the rocket engine spurted out the flame and produced a thrust of 30 Nm, and the Long March 3 rocket rose from the ground, and the "嗖" sounded straight into the sky. When the rocket flew to an altitude of about 60 meters, the parachute opened successfully, and my hanging heart finally fell. While observing the direction of the rocket landing, I ran to the landing point and suddenly found that the rocket landing line fell towards the roof. The big stone in my heart was moved again. Fortunately, the rocket was high enough, the parachute floated from the roof. After that, I rushed to the landing point to catch the parachute and the rocket. In the end, the launch of this DIY rocket was a complete success.

Classmates, if you are interested in model rockets, let's play together!

Fourth grade: Huang Yongkang