USS Solstice NCC-72718 Wikia
Warp nacelle.jpg

The energetic plasma created by the M/ARC, and passed along the power transfer conduits, quickly arrives at the termination point, the warp engine nacelles. This is where the actual propulsion work is done. Each nacelle consists of a number of major assemblies, including the warp field coils (WFC), plasma injection system (PIS), emergency separation system (ESS), and maintenance docking port.

The basic structure of the nacelles is similar to that of the remainder of the starship. Tritanium and duranium framing members are combined with longitudinal stiffeners, and overlaid with 2.5 meters of gamma-welded tritanium hull skinning. The addition of three inner layers of directionally strengthened cobalt cortenide provides protection against high levels of warp-induced stress, particularly at the attachment hardpoints on the support pylons.

All framing and skinning of the nacelles and the support pylons accommodates triply redundant conduits for SIF and IDF systems. Attached to the inner framing members are shock attenuation cylinders for the warp field coils, as well as thermal isolation struts for the plasma injection system.

The emergency separation system would be used in the event that a catastrophic failure occurred in the PIS, or if a nacelle damaged in combat or other situation could not be safely retained on its support pylon. Ten explosive structural latches can be fired, driving the nacelle up and away at 30 m/sec.

During starbase layovers and low-sublight travel, with the M/ARC powered down, the maintenance docking port allows any work pod or shuttle equipped with a standard docking collar to attach, permitting engineering crews and hardware rapid access to the interior of the nacelle. Normal monitoring visits from within the starship are made by single-occupant turbolift through the support pylon.