Week 38


Daniel

This week i am working on establishing a real concept for the launching mechanism.
As I mentioned in the intro we saw past using actuators and pressure as propelling forces for the cannon.
We therefore as a group decided to use springs. More specifically, compression springs.
Evenly spaced, we would use between 4-6 springs inside the barrel of the cannon to equally distribute force across the launch-plate.

Schematic of the tension/compression spring. | Download Scientific Diagram
The springs will be pulled into tension via a motor, then via the formula for spring tension and kinetic force we can calculate how far the cannon will launch the current projectile.
the 4 outside circles represent the placement of the springs.
Early side view of cannon-barrel
and
potential release mechanism.

The barrel of the cannon will be controlled by several servos. One for rotation in the
X-plane and of for angle alignment.
To measure distance, our plan is to use a Lidar-laser.
This laser will sit on the side of the barrel, so that it can be pointed at the target location for an accurate measurement.





The barrel itself, will have a diameter of aprox; 25 cm, and will be either copper, aluminum or steel.
The support and push plates will likely be 3d printed to fit the barrel, this way we can make support for each spring to make sure that they do not go out of alignment after each firing of the cannon.

Isometric view for the Push-plate





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