Home Hobbies: A Review Guide of Model Rocketry

Welcome to Home Hobbies: A Review Guide of Model Rocketry. Dive into the exciting world of model rocketry with expert insights, tips, and safety guidelines. From choosing the right rocket kit to mastering launch techniques, we’ve got you covered.

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History of Model Rocketry

Unsurprisingly, the history and development of model rocketry are closely tied to rockets. Still, it is important to note that there are some differences between the two. One obvious difference is that model rockets are designed to reach significantly lower altitudes than conventional rockets.

13th century China: In the early part of the century, the Chinese transformed their rudimentary black powder-propelled fireworks into offensive weapons for warfare. These ‘arrows of fire’ were catapulted high towards enemy territories using a launcher.

16th century: Centuries later, Jean Beavie, a Belgian inventor, would imagine and sketch an idea for a multistage rocket. Later on, this would help the development of multi-staging, which practically solved the problem of getting rockets to escape the Earth’s gravitational pull.

Modern era: In 1954, a pair of brothers, Orville and Robert Carlisle designed the first modern model rocket. Three years after, the launch of the Sputnik would inspire civilians to build and launch their own, leading to some tragic accidents.

Realizing there might be a market for their invention, the Carlisle brothers would begin selling their rockets as a safer alternative. They would become founders, along with G. Harry Stine, of the first American company dedicated to model rockets, Model Missiles Incorporated.

Eventually, higher power motors would become available during the late 1980s to early 1990s

Resources:

• NASA: Brief history of rockets
• Museum of Flight: Inspiring rockets

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Types of Model Rockets and Components

Model rockets are usually classified into two categories depending on the kind of engine they use.

Black powder engine rockets: This type of rocket is considered to be the traditional kind since it has been in production since the boom of model rocketry in the 1950s. It still remains a popular choice. Black powder engine rockets are typically made from a paper tube and feature a black powder propellant.

Composite engine rockets: This type can be further categorized into single-use and reloadable composite subcategories. Single-use composite engine rockets are made of high-temperature plastic and are designed to be three times more powerful than black powder types. Reloadable composite engine rockets are similar to the single-use type except they are relatively less expensive.

Basic Parts and Components

Nose Cone: This conical-shaped component is the part that enables air to flow more smoothly over the body of the rocket. It is usually made from a light material like Styrofoam, plastic, or fiberglass.

Payload Section: This is the part where loads like cameras or electronic altimeters can be stored. Not all model rockets have this.

Transition Section: Made of balsa wood, plastic, or hardwood, this section serves as a connection for body tubes of different sizes.

Tube body: This connects all the pieces and keeps the transition section protected.

Resources:

• Livermore Unit National Association of Rocketry: All about rocket engines
• University of Illinois at Urbana-Champaign: Q & A: Model rocket engines
• University of New Mexico: Parts of a model rocket

Building and Launching Model Rockets

This is perhaps the most exciting part of model rocketry. However, it can also be the most difficult if you do not prepare and research for it enough.

Building

The good news is that you will not have to build a model rocket from scratch unless you really want to. There are plenty of commercial model rocket kits you can purchase from various hobby stores.

Once you have a kit, all you will need to do is follow the instructions and have these tools ready:

• Modeling knife and scissors
• Ruler
• Balsa sealer
• Masking tape and white glue
• Sandpaper
• Tube-type plastic cement

Launching

Make sure to learn and follow all safety measures and laws that may be in place in your state when it comes to launching model rockets. The launching process involves the following phases.

• 1st phase: Ignition and lift off
• 2nd phase: Engine burnout
• 3rd phase: Coasting
• 4th phase: Apogee and ejection
• 5th phase: Recovery

Resources:

• University of Washington: Model rocketry technical manual
• Astronomy Department at Cornell University: How do I build a model rocket? (intermediate)

Precautions and Safety

To avoid causing accidents and mishaps, always remember these precautions:

Only use lightweight materials for the body, fins, and nose of your model rocket. Metals may cause damage or injury.

Avoid using anything but commercially-made and certified rocket motors. Be aware that using larger engines may require you to secure a permit from your local fire department.

Always warn onlookers to keep a safe distance from the launch pad before launching a model rocket.

Never aim model rockets at airplanes or clouds.

Hobbyists are typically required to secure permission from property owners before launching.

Resources:

• Boy Scouts of America: Rocket safety
• Orange County Fire Authority: Community risk reduction informational bulletin model rocket safety
• University of California Cooperative Extension: Model rocketry safety

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Recovering your Rockets

Most model rockets are equipped with a recovery system (typically a parachute) which allows them to come down safely back to the ground. Veterans of the hobby advise other enthusiasts to dust their parachutes with talcum powder pre-launch, as this makes it easier for them to open.

Resources:

• Science Buddies: Model rocket safety guide
• Naval Postgraduate School: Miniature autonomous rocket recovery system

Model Rocket Groups and Websites

There are plenty of model rocket hobby groups currently active in the United States. Many of their websites and contact details are listed on the National Association of Rocketry site. Check the list out to see if you have a local chapter near you. There is also a model rocket competition for interested individuals.

Resources:

• National Association of Rocketry: Find a local NAR club
• Northern Virginia Association of Rocketry: About
• Tripoli Minnesota High Power Rocketry Club: Home

Additional Resources

Are you looking for more reading material to get acquainted with the science behind and practical aspects of model rocketry? The Denton Independent School District has an informative Model rocketry study guide to peruse. PBS Learning Media also has a section on Model rockets for 4^th to 6^th grade students.

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