HPG H135 Improvment Mod

This add-on enhances the freeware Airbus H135 by Hype Performance Group, introducing refinements to flight mechanics and engine parameters. Key modifications include improved handling characteristics, increased rotor inertias, and refined engine configurations based on real-world data. The adjustments aim to create a more realistic flying experience without altering the original assets, ensuring compatibility with future updates. Users will need the original H135 installed to utilize this overlay tweak.