By harnessing the power of static lift, you can effectively cancel out the mass of your vehicle, making it lighter and more agile. From innovative solutions like gas bags and lift fans to cutting-edge concepts like contragravity and force repulsion, the possibilities are endless. And don't forget that some air-motive systems like helicopters, tilt-rotors, and ornithopters, already provide a significant boost of lift.

This might be the worst way to lift an aircraft known to man. But for many years, it was the only way to lift an aircraft known to man. The one advantage it has is that it is a purely static system, requiring little to no power to lift the aircraft.

To determine the size of your gas bag, start with the mass of your vehicle, in kilograms.

Hot air has the advantage of being very cheap, but its lifting power is poor. Hydrogen and helium are much more effective. Helium is more expensive, but hydrogen has a minor Hindenberg problem.

You will quickly notice that even the most efficient options will require absolutely ridiculous volumes. There is no way—none at all!—you can fit these inside a vehicle. So where do you put these?

Above the vehicle.

To find the size of your gas bag, go to the Scale table and find the Volume of your gas bag. If you are using a spherical balloon, multiply the Linear value by 1.25 to find the diameter of your balloon. If, on the other hand, you are using a zeppelin-shaped gas bag, 0.6 times your Linear value becomes the diameter of the zeppelin, but five times your Linear value becomes its length.

As to hull points…if your gas bag takes damage, it is destroyed. If you were using hydrogen as your lifting gas, assume that your vehicle becomes a fireball.