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- TRACTOR BEAMS
-
- Starfleet missions sometimes require direct manipulation of relatively
- large objects in proximity to a starship. Such operations can take the form of
- towing another ship, modifying the speed or trajectory of a small asteroid, or
- holding a piece of instrumentation at a fixed position relative to the ship. The
- execution of such missions generally requires the use of tractor beam
- remote manipulators.
- Tractor emitters employ superimposed subspace/graviton force
- beams whose interference patterns are focused on a remote target,
- resulting in significant spatial stress being applied on the target. By
- controlling the focal point and interference patterns, it is possible to use this
- stress pattern to draw an object toward the ship. Conversely, it is also
- possible to invert the interference patterns and move the focal point to
- actually push an object.
-
- EMITTERS
-
- Tractor beam emitters are located at key positions on the ship╒s
- exterior hull, permitting objects at almost any relative bearing to be
- manipulated. Key among these are the two main tractor beam emitters,
- located fore and aft along the keel of the Engineering Hull as well as a third
- main emitter located on the forward surface of the interconnecting dorsal.
- Additional emitters are located near each shuttlebay for use in shuttle
- landing maneuvers. Mooring tractor beam emitters, used when the ship is in
- dock, are located at each reaction control thruster quad.
- The main tractor beam emitters are built around two variable phase
- 16 MW graviton polarity sources, each feeding two 450 millicochrane
- subspace field amplifiers. Phase accuracy is within 2.7 arc-seconds per
- millisecond, necessary for precise interference pattern control. Secondary
- tractor beam emitters have lesser performance ratings. Main tractor beam
- emitters are directly mounted to primary structural members of the ship╒s
- framework. This is because of the significant mechanical stress and inertial
- potential imbalance created by tractor beam usage. Additional structural
- reinforcement and inertial potential cancellation is provided by tying the
- tractor emitter into the structural integrity field (SIF) network by means of
- molybdenum-jacketed waveguides.
- Effective tractor beam range varies with payload mass and desired
- delta-v (change in relative velocity). Assuming a nominal 5 m/sec« delta-v,
- the primary tractor emitters can be used with a payload approaching
- 7,500,000 metric tonnes at less than 1,000 meters. Conversely, that same
- delta-v can be imparted to an object massing about one metric tonne at
- ranges approaching 20,000 kilometers. ╞
-