Structural integrity field

The mechanical intergrity of the physical spaceframe is augmented by the structural integrity field (SIF) system. This system provides a network of forcefield segements that compensate for propulsive and other structural load factors that otherwise exceed the design limits of the spaceframe. The SIF applies forcefield energy directly to field conductive elements within the spaceframe and increases the load-bearing capacity of the structure.

Field generation of the SIF is provided for by specialized graviton polarity sources feeding a pair of subspace field distortion amplifiers. These flux generators feed a network of molybdenum-jacketed triphase waveguides which distributes the field throughout the spaceframe. When in operation, typical load-bearing capacity in Federation ships increases 125,000%. Secondary feeds also provide for reinforcement of the vehicle's external shell.

Flight Control conditions determine how many generators are active. During Red Alert situations, all generators not already in service go to hot standby for immediate activation. (from Star Trek: The Next Generation Technical Manual, p. 23)

Also see Inertial dampening field