working model rocket for project?

Question

my son have project in science that is working model rocket. Any body help me how to do it

Answer 1

The "Estes" company is one of the leading companies in the United States that produces small kits to build model rockets. You usually get a cardboard tube, wood tail fins, a plastic nose cone, a plastic parachute and some wooden rings that will allow you to mount a small holder for a rocket engine inside the body tube. The engine needs a small igniter that is fired by a battery powered handset connected by long wires that allow you to stand away from the rocket as you launch it. The rocket is launched from a small platform on a rail that you buy separately.

After the engine burns itself out, a small powder charge bursts, and the nose cone opens, and a small plastic recovery parachute is ejected out of the body tube so the rocket floats back down to earth.

All Estes kits come with building instructions. I don't think you need any special glues, I think plain white glue will do for most kits. I don't think you need any special tools for the electrical igniters, the wires just twist together.

The construction is quite easy, you just need time to assemble the parts, glue them in place, and let the glue dry. If you have time, you try to give the thing a killer paint job too. Of course, you want to test the rocket *before* you demonstrate it to the class.

You can search for Estes on the internet. You can buy their model rocket kits in hobby stores.

Some advanced kits from Estes have small film cameras on them, that will photograph the ground below as the rocket flies upward. Very fun, but they cost more, and will take more time to build. Start with a simple, cheap, kit.

A good scientific question to ask is, "How high did my rocket go?"

First, let your rocket fall with it's parachute open from a known height, and time the fall. Divide time by distance to get fall rate. Repeat this a couple of times to get average fall rate.

When you do your launch, watch for the parachute deployment, then time the fall.

Divide launch fall time by fall rate to get the height of your launch.

If you have time, do a couple of launches, find the *average* height of your rocket's flight.

A less expensive alternative might be to use a water rocket. It is a simple toy that uses a plastic bottle as the rocket. The bottle is filled with a small amount of water. You then pump air into the bottom of the bottle. You push a button, and the bottle is released from the pump. The compressed air then blasts the water out of the opening in the bottom where the air is injected, and this provides the thrust to launch the bottle upward.

Water rockets are sold in toy stores, and don't require any special assembly. Of course, they don't fly as high as a model rocket of the kind made by Estes.

But you can still ask the same questions I suggested above. Find the fall rate and average fall time.

You can also ask what is the best amount of water to use in the bottle for maximum height.

If you want something *really* simple, take an alka-seltzer tablet, and put it in the small plastic case for a 35mm film roll. Put water in the case, then quickly put the plastic cap on. Set the case with the cap down on the ground, and the body of the case will "pop" up a small distance when the gas pressure from the seltzer tablet builds up enough to break free of the cap. You'll have to experiment to get the right amounts of seltzer tablet and water.

Even if you don't get good results by the project due date, building model rockets is a good way for young people to learn to focus on a task and pay attention to detail, which is good for study habits.

Answer 2

At last year’s annual Cub Scout Pack 1346 rocket derby, nearly 100 rockets were launched, testing the attention span of many younger scouts. For this year’s event I wanted to build a system that would create more excitement and keep the pace of the launches moving along. This 10-pad mega-launcher is the result of that initial inspiration.
http://www.vermontgoodwood.com