I’ve been trying my hands on something similar;
I’d basically model the ships, components ie Walls and Floors separately as Modular pieces, and bring them to Unreal where I hope to make a variation of different Ship interiors. The thing is the walls and floors will have to be modular to avoid any awkward collision issues.
After that is the Physics. I STILL haven’t found a tutorial on a proper flying Air ship, so I just tweaked the original template from the Starter Content. Just add a few more Static Mesh Components to it.
Going back to the Physics is the most difficult part to me, because there’s Angular Damping and Linear Damping, and I don’t know much but I can say they are float values and setting one around .5 to 1. or 5 makes a big difference from your ship barely moving at all, to spinning wildly out of control; be on the lookout for those two settings in the Defaults section, and the Mass Kg under Simulate Physic.
Luckily I got a basic model of my ship to work but it has no interior, and it’s one mesh so the weighting issue isn’t so much a concern here; but for a modular ship that is made up of multiple pieces to be lifted off the ground together, it may come as a challenge.