Gravity Brake
A type of gravity-control device which when powered can support a load against all or part of a local gravitational field.
The heart of a gravity brake is a Casimir ram creating a negative-energy region which warps space to cancel out gravity fields, preventing the brake and attached objects from following their geodesic. In layman's terms, it gets "pinned" in place and is not pulled down. A running gravity brake does not consume any energy since it does not do work, just like a chair supporting a person. By dialing down the Casimir ram, gravity can be allowed to partially regain its hold and gently lower the brake to a soft landing. Gravity brakes alone cannot be used for planetary takeoffs since they can only counteract the effects of local gravity, not provide thrust against it--for that, a vehicle will need an auxiliary system such as a rocket engine, the operation of which will be much more efficient since it does not have to constantly work against gravity. While operating, the Casimir ram inside will glow blue with Cherenkov radiation emitted from its negative-energy manipulation.
Since their invention, gravity brake technology has advanced to be used in everything from massive floating cities of the avens and other flying species, to lift devices in space shuttles and power armor.
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