Here is some data of the space stations designed by the three teams of SSDW IRS'99.

Each team had to design two different station configurations: during phase I, the emphasis of station utilization was on microgravity research, while for phase II the main objective was to provide an experimental space hotel.

Blue Team

Phase I Basic Concept:
Crew: 60-90 days/yr, 2 crew (1 for maintenance, 1 for experiments )
Orbit: circular, 350-450 km, inclination 30°
Flight Mode: earth-oriented (TEA)
    - IOC: impulsive reboost
    - Stage 2: continous reboost
      (Arcjet/Resistojet fed by ECLSS)
Launch:
    - assembly: Ariane 5, HM II (STS, Proton, Energia)
    - resupply: ATV (Progress)
    - crew transport: CTV (Soyuz, STS)

Phase I Space Segment:

1 FGB (modfyd. Zarya)		23.3 t / 4.2 x 12.3 m
1 lab/hab (modfyd. JEM)		19.8 t / 4.5 x 12.0 m
1 node				10.9 t / 4.5 x 6.1 m
1 CRV docking adapter	 	 1.1 t / 1.0 x 2.5 m
1 CRV				10.5 t / 4.0 x 10.4 m    

Phase I AOCS Design and Simulation:
Altitude envelope (min./max.) 350 - 450 km
Inertia tensor [10E6 m²]:

	 5.777	 0.000	-0.095
	 0.000	 5.870	 0.000
	-0.095	 0.000	 0.826

Drag incidence surface area (min./max.)		128.4 m2 / 444.4 m2
Center of mass (x/y/z) in ref. to node 1	( 0.0 / 0.0 / -2.174 ) m
Propellant needs (impuls. reboost / attitude) 	634 kg/yr  
Attitude performance 				-2.35° +/- 0.1° 
Reboost cycle period				105 days (max. 160 days)    

Green Team

Phase I Power and Thermal System:
GaAs solar panels (output power 97 kW)
NiH2 batteries : 3 sets for 10 years (1.13 t per set)
Body mounted heat pipe radiators
working fluid : H2O
thermal load to reject : 111 kW
Material of the surface : β-cloth

Phase II Configuration Model:

Phase II Guest Activities:
Private activities:
    - multimedia entertainment
    - sport (to avoid loss of muscles)
    - experiments (fluids, plants growth)
group activities:
    - lectures on astronomy and geography
      (observation and photos)
    - emergency exercises and simulations

Red Team

Phase I Basic Concept:
Orbit: 450km-430 km, inclination 30.2°
Flight mode: Earth oriented, gravity-gradient stabilized
Launch by Ariane 5 (evolution?), Space Shuttle
Resupply by Ariane 5/ATV, H II, Space Shuttle (crew transport)
Crew: 2 permanent, 1 temporarily (every second cycle)
Space segment (ca. 110 t in orbit):
    - 3 modules (370 m³ pressurized volume),
    - 1 external platform,
    - manipulator,
    - node/truss-structure
Power: 35 kW photovoltaic
AOCS:
    - Impulsive reboost every 90 days by H2/O2 thrusters,
    - CMGs, magnetic coils

Phase I Launch Sequence:

 

Phase II Space Segment Configuration:

 

Phase II Resupply/Reboost Cycles:

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