Okay, stats for the settle class shuttle
Settler-A Class Shuttle
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 tonnes into orbit,
and manoeuvring 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 neutralised the crafts weight. At the high orbital
insertion point, the shuttle’s fusion thermal 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 manoeuvring, and
even transit to nearby moons and planets. A small allowance has been
provided in the fuel supply for the turbofans to allow atmospheric
manoeuvring.
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 thermal rocket requires 16.8 minutes burn (0.14G)
for orbital insertion and de-orbit burn, the remainder can be used for
orbital manoeuvring (1.8 minutes). The following burn times are for a
type A planet, smaller worlds will provide a greater fuel reserve.
XXXXXXXXXXXXXXXXXXXXXXXXX
Settler Class Shuttle
Displacement 100 tns; Hull Armour: 10
Length: 14m Volume: 1400m
Price: MCr 54.32814 Target Size: Small
Configuration: SL Sphere,
TL: 8 Mass (L/E): 1465.218 / 765.218
Engineering Data:
Power Plant: 25MW Fission , Duration 1 year, Batteries 11.2MWHRs
Jump Performance: 0
Manoeuvre Gs: 0.5G on turbofans producing 500tns thrust, 0.5G on fusion
thermal rocket producing 500tns thrust,
contra-gavity
G Hours: 1.4 for turbofans, 0.14 for fusion rocket + 1.8 minutes orbital
manoeuvre
Maint: 90
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: 1 small stateroom, 3 bunks
Cargo: 700 cubic metres
Small craft: None
Airlocks 1
Other: 2 large cargo hatches
Notes: No fuel scoops or plant. Fuel: 2.5kl radioactive, 86.8kl liquid
hydrogen, 168kl hydrocarbon distillates.
In sub-orbital flight the shuttle has a power surplus of 0.5385MW with
the combined power output of the power plant and the turbo fans. During
orbital transfer, the shuttle uses its batteries to make up the power
shortfall to power the fusion thermal rocket and the additional
contra-grav requirement. In orbital flight with the fusion rocket
operating, and the contra grav switched off, the FTR is powered down to
a 20MW level (0.3G).
On 08/03/2015 17:20, Todd Kes [Traveller_TNE] wrote:
> That's actually pretty darn interesting. I wonder if we could do a
> semi-timeline of orbital launch capacity. I.e. show the most
> efficient TL 7 launch platform (efficient = least $/ton into orbit),
> then TL 8, then TL 9, aso. (I.e. TL 8 means nothing over TL 8, so the
> below launch platform would count as TL 9).
>
> It would be interesting (to me) to see the cost per ton drop as the TL
> goes up.
>
> For example your launch vessel below would be:
> TL 9: MCr 54 @ 50 dtons = 1.08 MCr/dton (reusable)
>
> Adding in the resuable costs and turn-around time would be nice.
>
> Todd Kes
>
> ----------------------------------------------------------
>
Settler-A Class Shuttle
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 tonnes into orbit,
and manoeuvring 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 neutralised the crafts weight. At the high orbital
insertion point, the shuttle’s fusion thermal 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 manoeuvring, and
even transit to nearby moons and planets. A small allowance has been
provided in the fuel supply for the turbofans to allow atmospheric
manoeuvring.
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 thermal rocket requires 16.8 minutes burn (0.14G)
for orbital insertion and de-orbit burn, the remainder can be used for
orbital manoeuvring (1.8 minutes). The following burn times are for a
type A planet, smaller worlds will provide a greater fuel reserve.
XXXXXXXXXXXXXXXXXXXXXXXXX
Settler Class Shuttle
Displacement 100 tns; Hull Armour: 10
Length: 14m Volume: 1400m
Price: MCr 54.32814 Target Size: Small
Configuration: SL Sphere,
TL: 8 Mass (L/E): 1465.218 / 765.218
Engineering Data:
Power Plant: 25MW Fission , Duration 1 year, Batteries 11.2MWHRs
Jump Performance: 0
Manoeuvre Gs: 0.5G on turbofans producing 500tns thrust, 0.5G on fusion
thermal rocket producing 500tns thrust,
contra-gavity
G Hours: 1.4 for turbofans, 0.14 for fusion rocket + 1.8 minutes orbital
manoeuvre
Maint: 90
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: 1 small stateroom, 3 bunks
Cargo: 700 cubic metres
Small craft: None
Airlocks 1
Other: 2 large cargo hatches
Notes: No fuel scoops or plant. Fuel: 2.5kl radioactive, 86.8kl liquid
hydrogen, 168kl hydrocarbon distillates.
In sub-orbital flight the shuttle has a power surplus of 0.5385MW with
the combined power output of the power plant and the turbo fans. During
orbital transfer, the shuttle uses its batteries to make up the power
shortfall to power the fusion thermal rocket and the additional
contra-grav requirement. In orbital flight with the fusion rocket
operating, and the contra grav switched off, the FTR is powered down to
a 20MW level (0.3G).
On 08/03/2015 17:20, Todd Kes [Traveller_TNE] wrote:
> That's actually pretty darn interesting. I wonder if we could do a
> semi-timeline of orbital launch capacity. I.e. show the most
> efficient TL 7 launch platform (efficient = least $/ton into orbit),
> then TL 8, then TL 9, aso. (I.e. TL 8 means nothing over TL 8, so the
> below launch platform would count as TL 9).
>
> It would be interesting (to me) to see the cost per ton drop as the TL
> goes up.
>
> For example your launch vessel below would be:
> TL 9: MCr 54 @ 50 dtons = 1.08 MCr/dton (reusable)
>
> Adding in the resuable costs and turn-around time would be nice.
>
> Todd Kes
>
> ----------------------------------------------------------
>