David Webers Honorverse is mostly build on handwaved artificial gravity and FTL being possible. Largely it is hard take on whole thing. Though I think there is

David Webers Honorverse is mostly build on handwaved artificial gravity and FTL being possible. Largely it is hard take on whole thing. Though I think there is some other stuff as well. It does do a lot with ship to ship fleet combat and at least some implications how ships work inside the constraints.