Designing a Pressurized Cannon Launcher: From Launching to Measuring

For my engineering class, I’m designing a pressurized cannon launcher, a project that combines building a working mechanism with exploring how a projectile moves. But I wanted to take the idea further than simply launching something and watching where it lands.

My plan is to add a speed detector to measure the projectile’s launch speed and an angle measurement device to show the angle I’m launching from. These additions put measurement at the center of my design. Instead of focusing only on what the launcher does, I want to better understand its performance.

Starting With the Launcher

The pressurized cannon launcher is the foundation of my project. Designing it means thinking about how the components will work together, how I’ll operate it, and how I’ll evaluate the finished design.

I’m approaching it as more than a class assignment to assemble a device. It’s an opportunity to work through an engineering problem: define what I want the system to do, develop a design, and consider how I could improve it.

The question that pushed my idea forward was simple: What else could this launcher tell me?

Adding a Projectile Speed Detector

One innovation I’m incorporating is a speed detector for the projectile as it launches.

Watching a launch can give me a general impression of how fast the projectile is moving, but my goal is to capture an actual measurement. I want launch speed to become something I can record and compare, rather than something I describe as “fast” or “slow.”

That also gives the detector a clear purpose within the project. It isn’t just an extra feature; it’s part of my plan to evaluate the launcher and make future design decisions based on data.

Measuring the Launch Angle

The second addition is an angle measurement device so I can see what angle I’m launching from.

I want to be able to identify the launcher’s position rather than estimate it by sight. Recording that angle alongside projectile speed would give me a more detailed picture of each launch.

Together, the two measurements would let me document:

• The angle of the launcher before a launch.

• The projectile’s measured launch speed.

• The observed result of the launch.

  
  

My goal is to make each test more informative, not just more exciting to watch.

Turning an Idea Into an Engineering Investigation

What interests me most about this project is the transition from designing a launcher to designing a launcher that can help me investigate its own performance.

The original idea gives me something to build. The speed detector and angle measurement device give me a way to ask more specific questions about what I build. As I develop the project, I want to explore how to integrate those features without making the system unnecessarily complicated.

Safety is also a priority in my design goals. I intend to review the launcher and testing plan with my instructor before any pressurized testing, and to treat the measurement features as additions, not substitutes for appropriate safeguards.

What I Hope to Learn

Through this project, I want to strengthen my ability to connect mechanical design with measurement and testing. I also want to practice explaining why a feature belongs in a design and what useful information it should provide.

For me, the most exciting part is taking a basic concept and giving it a more purposeful direction. I’m not just designing a pressurized cannon launcher for my engineering class. I’m working toward a system that launches, measures, and gives me something meaningful to analyze.