This is a weekly posting with GURPS vehicles (and the like) to the
GURPSnet mailing list. I grant the permission for all non-commercial
redistribution of my work, but I would like to know if you put it on
a website or the like. The files at omeyer.gmxhome.de are down until
I fix the automatic PDF generation, which should be one of these
days - see sourceforge.net/projects/gurpsml
Onno Meyer, 2010-02-22
The 'double issue' of this week presents the same ship twice, once as
a Vehicles design and once with the Spaceships rules. The twin versions
are not interchangeable in the same game, but they have a similar look
and feel in both systems.
Generation Ship v1.0 (TL10)
Copyright 2010 by Onno Meyer
In settings without faster than light drives, interstellar flights are
long and tedious. Adventures might play out during critical times of the
journey, or with the arrival of a generation ship at a destination which
none of the current crew have chosen for themselves.
This design has a delta-V of 13,115 km/s, which allows her to cruise
at more than 2% of lightspeed. Acceleration and deceleration will take
many years, but they pale against the centuries spent coasting along.
The hull of the ship consists of a central cylinder housing the fusion
reactors and engines, and a flat disk spinning for 0.7 G at the rim. The
hydrogen tanks on the upper decks are converted into park areas when the
reaction mass is expended, which gives the mid-flight generations over a
million cubic meters of extra space.
Routine operations require some 200 crew, but services and the need to
raise the new generation bring the total complement closer to 2,000. Her
hydroponic recycling system was designed to operate at 99.8% efficiency,
so the supplies will last for 2,000 years with 2,000 people.
Upon arrival, the generation ship deploys miners and starts to build
an asteroid habitat. The generation ship carries 2,000 tons of payload
and 800 tons of subcraft for these tasks. Once this first habitat is
operational, the crew can either decide to colonize the system or to
refit and refuel for the return trip ...
The fusion rockets use 2,400 gallons of reaction mass per hour. A full
load of reaction mass and provisions is $78,000,000.
Subassemblies: Body +15.
Powertrain: Three 200,000-lb. optimized fusion rockets; twelve 50,000-kW
fusion reactors; 4,800 360,000-kWs rechargeable power cells.
Fuel: 600,000,000 gallons hydrogen (fire 13).
Occ: 100 bridge RCS, 800 double-occupancy cabins, 400 single-occupancy
cabins.
Cargo: 200,000 cf.
Armor F RL B T U
All: 4/450 4/150 4/450 4/150 4/150
Equipment:
Body: Spin hull (210-yard radius); four extreme-range radios; two
extreme-range, very sensitive laser communicators; four 20,000-mile, air
search radars; four 8,000-mile thermographs; four 8,000-mile
radscanners; four x2,000 astronomical LLTVs; four high-resolution
planetary survey arrays; two sets of precision navigation instruments;
two inertial navigation systems; advanced radar/laser detector; nine C8
hardened macroframes; 1,000 terminals; 100 full fire suppression
systems; twenty complete workshops; ten minifacs; five operating rooms;
100 automeds; twenty 1,000-sf restaurants, bars and conference rooms;
four 8-man airlocks; two 40,000-cf space docks; twenty 200-man total
life systems; 3,000,000 man-days of provisions. External: Radiation
shielding.
Statistics
Size: 540'x1,260'x1,260' Payload: 180,000 tons Lwt.: 300,000 tons
Volume: 120,000,000 cf Maint.: 898 man-hours Price: $35,003,432,000
HT: 6. HPs: 4,380,000 Body
sAccel: 0.001 to 0.0024 Gs sMR: 0.001
delta-V 29,345,450 mph
Design Notes
Body is 120,000,000 cf. Structure is heavy, advanced. Armor is
advanced metal. Sealed. Ultra-light tanks. Computerized controls with
quadruple maneuver controls. 17,708,435 cf of empty space. Empty weight
is 240,000,000 lbs.
The vehicle uses the design rules from Vehicles [second edition, third
printing, Jan 2007 errata], UT, VXi and VXii (including the armor volume
rule) with the text format from Vehicles Lite.
Generation Ship, Spaceships Version v1.0 (TL11)
Copyright 2010 by Onno Meyer
In settings without faster than light drives, interstellar flights are
long and tedious. Adventures might play out during critical times of the
journey, or with the arrival of a generation ship at a destination which
none of the current crew have chosen for themselves.
This design has a delta-V of 7,820 km/s, which allows her to cruise
at more than 1% of lightspeed. Acceleration and deceleration will take
many months, but they pale against the centuries spent coasting along.
The hull of the ship consists of a central cylinder housing the fusion
reactors and engines, and a flat disk spinning for 0.7 G at the rim. The
hydrogen tanks on the upper decks are converted into park areas when the
reaction mass is expended, which gives the mid-flight generations over a
million cubic meters of extra space.
Routine operations require some 360 crew, but services and the need to
raise the new generation bring the total complement closer to 2,000.
Upon arrival, the generation ship deploys miners and starts to build
an asteroid habitat. The generation ship carries 800 tons of payload
including the subcraft for these tasks. Once this first habitat is
operational, the crew can either decide to colonize the system or to
refit and refuel for the return trip ...
The generation ship has a 300,000-ton (SM+13) unstreamlined hull with
spin gravity.
Systems Table
Front Hull System
[1] Advanced Metallic Laminate Armor (dDR 100).
[2-6] Fuel Tank (15,000 tons of hydrogen providing 324 mps each).
Central Hull System
[1-4] Fuel Tank (15,000 tons of hydrogen providing 324 mps each).
[5] Habitat (250 bunkrooms with total life support, 20 automed
clinic, 400 tons cargo).*
[6] Habitat (250 bunkrooms with total life support, 2 briefing
rooms, 6 establishments, 10 minifacs, 2 offices, 400 tons
cargo).*
[core] Control Room (C10 computer, comm/sensor 12, and 30 control
stations).*
Rear Hull System
[1] Fusion Rocket (0.005 G acceleration).*
[2-6, core] Fuel Tank (15,000 tons of hydrogen providing 324 mps each).
* 30 technicians man each system.
The generation ship has 30 bridge crew and 120 technicians and service
crew per shift.
TL Spacecraft dST/HP Hnd/SR HT Move Lwt. Load SM Occ
dDR Range Cost
PILOTING/TL11 (LOW-PERFORMANCE SPACECRAFT)
11 Generation Ship 500 -6/5 13 0.005 G/4,860 mps 300,000 1,000 +13
2,000ASV 100/0/0 - $6,337M
Next Week: The miner.
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