Exactly how anti-gravity works in the Traveller universe isn't entirely clear in the Mongoose rules, so I'm doing my own clarifications so that I can be consistent. When I say 'works' I'm talking about the practical affect it has on ships and vehicles, not the techno-babble behind it.

Ships, space stations and micro-gravity settlements will often use gravity plates to generate a local artificial gravity field. This allows people to move around as if under 1g of acceleration. This also has the added benefit of reducing inertial effects from ship acceleration. Generally, such fields can be configured to cover anything from 0.5g to 1.25g, though more powerful fields are possible.

The plates are horizontal, and generate a mostly constant gravity field up to 2m from the surface. Every 0.5m beyond that, the field drops in intensity by about half. This can cause strange behaviour of items thrown above a height of 2m. Overlapping multiple fields has no effect as long as they are all on the same vector.

In large settlements, larger fields can be generated, often between 3m and 5m in height.

Starship manouevre drives