this discord link does not bring you to shedaniel's discord, but The Fabric Project discord.

This is https://www.curseforge.com/minecraft/mc-mods/iron-jetpacks-fabric, which is https://www.curseforge.com/minecraft/mc-mods/iron-jetpacks but ported to fabric.

This is essentially the same mod just updated for 1.16 and 1.17

This mod requires Cloth API: https://www.curseforge.com/minecraft/mc-mods/cloth-api

Iron Jetpacks is a fully customizable Energy powered jetpacks mod. All jetpacks this mod adds by default are completely configurable via JSON files.

This mod also allows for the addition of custom jetpacks!

This is done by simply copy + pasting one of the default jetpack jsons and changing the name (and all the other values if you want).
Both the name of the file and the "name" value in the JSON need to be changed.
It's also important to note that the "name" in the JSON should be all lower case with underscores for spaces.
The jetpack JSONs can be found in ../config/iron-jetpacks/jetpacks
Make sure to head to the wiki linked in the navigation bar for explanations on what the different values mean.

Iron Jetpatch Fabric