SEDSAT-2 SWOT analysis of uppt vrs magnetics
From SEDSWiki
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Contents |
Magnetic System
Determination: Magnetometers
Control: Magnetic Coils
Detailed documentation: http://www.cubesat.auc.dk/, http://www.ncube.no/
SWOT Analysis
| Strenghts | Weaknesses |
|---|---|
| > Often used by other CubeSats (well tested) > cheap > no moving parts | > interaction with magnetometers > not innovative > not free |
| Opportunities | Threats |
| > None | > None |
Micro propulsion system
µPPT
see http://en.wikipedia.org/wiki/Pulsed_plasma_thruster for general information
Design Goals for µPPT by ARC Seibersdorf (we would get fly-ready prototypes for SEDSat):
- Impulse bit: 10-20µNs, which would guarantee a pointing accuracy of <1 degree - Spec. impulse: 500-1000 s - Power: 0,5-1,5 W - Weight: < 30g
SWOT Analysis
| Strenghts | Weaknesses |
|---|---|
| > Innovative (I think the first use with CubSat) > Very Accurate (<1°) > Electr. Prop: Can almost never run out of propellant > non-toxic propellant (Teflon) > professional manufactured devices > free | > High electr. Power Consumption (maybe up to 1,5 W per Thruster) > relatively heavy (<30g) -> only 6 thruster configuration to use |
| Opportunities | Threats |
| > Could also be used for Orbit Changes (in limits), with additional thruster(s) > PR for using an innovative new technology for CubeSat | > Not available before Fall 2008 > New Technology (first ones to test) |
