In October sky what three changes did homer and his friends do to improve their rocket designs?

In October Sky, Homer and his friends made significant improvements to their rocket designs through three main changes:

1. Improved Nose Cone Design:

- They replaced the blunt nose cone with a sleek, pointed one. This reduced drag and allowed the rocket to travel faster and higher.

2. Upgraded Fuel Mixture:

- They experimented with different fuel mixtures, eventually finding an optimal combination that provided greater thrust and efficiency.

3. Enhanced Fin Stabilization:

- They redesigned the rocket's fins to be larger and more aerodynamic, ensuring greater stability during flight. This prevented tumbling and improved accuracy.