Summary

Designed for Student Pilots or CFI's looking to help them or their students better understand the pitot static system, I created a fully functional airspeed indicator that uses the same core principles of one used in aircraft, This model is great for allowing students to build one themselves and see what all the different parts of the indicator does and why its important. In an attempt to make it as simple to print and put together as possible, I designed it so all you need is a balloon/latex glove, the 3d printed parts, some glue, either CA or hot glue(didn't try but don't see why not), and a straw to blow into the diaphragm. Although the needle doesn't move near as far as a normal airspeed indicator, I still believe this is a good educational tool that teaches the concept of an airspeed indicator.

Disclaimer:
While real airspeed indicators have have springs inside to return them, I wanted to keep the build as simple as possible, while still allowing for maximum understanding

Tips:
The small gear's hole is chamfered so its a friction fit so it does matter the orientation, and that is the way its oriented when it loads in from the slicer

The only item that needs supports is the case everything else is designed to print without supports

I recommend allowing each student to build one themselves and see how each piece they add benefits the system

The top plate might not fit perfectly onto the case if you want the maximum amount of motion for the needle

Demonstration and build video:
https://youtu.be/MBtiXEUZT74?si=Rdt4tpEyU4YwOgXA