Gravity drive

Gravity drives are where 'wavetech takes a hard left away from hardtech and keeps on going. There are a large number of different gravity based drives, but as their name indicates they all work from one basic principle: The modify or make use of gravity to propel the ship they're part of.

Given hardtech's current inability to easily affect gravity by means other than shifting masses around, and large masses if they want human noticeable changes, the method by which handwavium devices can effect, generate or cancel gravity fields is even more poorly understood than a great deal of 'wavetech. There seem to be several different ways that it is done, often corresponding to the methods described in the works of fiction favoured by the the people who 'waved up the drive.

Gravity drives in general appear to be related to the artificial gravity technology many, many, Fen craft use. This surprises no-one.

Some kinds of gravity drives:

• Gravity propeller
• Dillon-Wagoner Graviton Polarity Generator aka Spindizzy drives.