The SD-08 is a civilian star-hopper designed for in-system and short-range inter-system travel.
This procedure assumes that PROCEDURES: REACTOR START setup has been performed, the REACTOR SELF-TEST button has been depressed for five (5) seconds and the cockpit master alarm has been activated.
An active reactor with hot coils is an emergency. Further operation could result in damage to the hardware and collapse of the magnetic containment field.
The core module of the SD-08 is composed of four volumes and is a self-contained life support and power-producing vessel. It has no innate manoeuvring capability.
Its base dry mass is 6.8 tons (6800kg).
Hinged plug doors secure each module's atmosphere and can hold twenty atmospheres of pressure, far above the yield point of all modules. The door slides forward on a rail to open when unlocked. Rubber gaskets on either side ensure complete isolation.
The locking wheel engages eight bracing pins that slide into frame sockets for a firm seal. A peg deploys on either side of the door that prevents turning of the wheel in case of pressure differential, but can be overridden by depressing or withdrawing via a pullring.
The standard SDa-class cockpit of the SD-08 is equipped with:
The SD-08 is equipped with a standard SP92 two-bus system that provides a nominal 100 VDC output at up to 500 A for a total capacity of 50 KW per bus. Each individual bus runs through the skin of the vessel as paired 280-count bundles of 2mm-gauge electrum wire (total diameter 4cm + 1cm insulation).
The buses are embedded into the inner wall of the vessel and siphoned with clamping junctions that embed electrodes into the bundles. For direct bus connection to more power-intensive equipment, multi-pin junctions and bus splitters are available.
The SD-08 utilises the SP92's control-by-wire breaker system for actuation of solenoid contacts within remote breakers.
An internal battery provides power in case of primary source failure, and mechanical overrides are available for each solenoid should the breaker panel be inoperable.
The SD-08 comes standard with an SP-TOK-50 toroidal fusion reactor, capable of producing up to 45KW in optimal conditions. It is a D-T magnetic confinement reactor with a pump-squeeze-pump startup mode.
The SD-08 bears two standard SP-T08 thrust modules held to the central module by twelve cross-struts, six per side. The twin SP-T08-V closed-cycle vacuum engines mounted to each module's back end are designed for high-efficiency sustained usage at low thrust settings.
The fuel tank of the SD-08 thrust module is a cryogenic capsule of 7.25m3 volume, capable of holding 3075kg of liquid methane at 105 K. Its walls are 1cm thick.
The oxidiser tank of the SD-08 thrust module is a cryogenic capsule of 4.5m3 volume, capable of holding 5150kg of liquid oxygen at 85 K. Its walls are 1cm thick.
The thermal control system is integrated into the thrust unit within the interstitial space between the tanks. Vacuum-gap and material insulation is used to isolate the cold surfaces from equipment heat.