Freelance Traveller

designed by Richard Perks

Developed by the Shield Polity in mid-1204 to provide general orbital transfer capability using the basic TL8 and emerging TL9 technologies at the new starports opening within the polity. Its purpose was to provide a small shuttle capable of lifting 50 displacement tons into orbit, and maneuvering to a space station, whilst allowing a rapid turn around on par with the relic HEPlaR powered shuttles. The shuttle was designed to operate from the smaller ports within the Polity and be built by the newly opened smaller shipyards.

The rapid turn around provision prevented the use of solid fuel boosters. Conventional turbofans are used to provide motive power to raise the shuttle to its orbital insertion point (90%) whilst the new contra-grav system neutralized the crafts weight. At the high orbital insertion point, the shuttle’s fusion rocket could be safely ignited to boost the shuttle out of the upper reaches of the atmosphere and into orbit. The design’s flexibility allowed a significant fuel allowance to be carried to allow considerable orbital maneuvering, and even transit to nearby moons and planets. A small allowance has been provided in the fuel supply for the turbofans to allow atmospheric maneuvering.

Small staterooms are provided for all 4 crew.

The fuel supply allows both powered ascent and descent. The turbofans burn for 151.2 minutes for ascent and descent leaving 16.8 minutes spare capacity. The fusion rocket requires 16.8 minutes burn (0.14G) for orbital insertion and de-orbit burn, the remainder can be used for orbital maneuvering. The following burn times are for a type A planet, smaller worlds will provide a greater fuel reserve.

Engineering Data

Power Plant

25MW Fission , Duration 1 year

Manoeuvre Gs

0.5G on turbofans producing 500tns thrust, 0.5G on fusion rocket producing 500tns thrust, contra-gravity

G Hours

1.4 for turbofans, 12.14 for fusion rocket

Maint

84

Electronics

Computer

2 x TL9 std

Commo

Radio 30,000km; Maser com, 3,000km

Avionics

TL8 avionics and navigation aids

Sensors

Radar, 300km;

Armament

None

Accommodation

Extended life support

Crew

4 (1 engineering/maint, 2 manoeuvring, 1 elec)

Workstations

3 bridge, 1 normal, TL9 controls

Crew Accommodations

4 small staterooms

Cargo

700 cubic metres

Small craft

None

Airlocks

1

Other

2 large cargo hatches

Notes

No fuel scoops or plant. Fuel: 2.5kl radioactive, 60.7kl liquid hydrogen, 168kl hydrocarbon distillates.

With no engines firing the shuttle has a power shortfall of approximately 10MW, this is normal dealt with by turning off the contra-grav system. During orbital transfer, the shuttle has a power surplus of 0.977MW. In orbital flight with the fusion rocket operating the shuttle has a power surplus of 30.566MW.

Atmospheric speed

Top = 1100kph, Cruise = 825kph, NOE = 40kph

Combat Move

High 153, Low 6

Travel Move

High 3300, NOE 240

System Damage Table

Damage Location Table