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Lewis (SSTI 1)
Lewis [TRW]
Lewis was one of two missions selected under NASA's SSTI (Small Spacecraft Technology Initiative) program to demonstrate advanced spacecraft technologies (11 July 1994).
Lewis' payload consisted of:
- Earth imaging Hyperspectral Imager (HSI) with 384 bands (0.4 - 2.5 µm, 30 m pixels, 7.7 km swath, panchromatic: 0.45 - 0.75 µm, 5 m pixels, 13 km swath),
- Linear Etalon Imaging Spectral Array (LEISA), from NASA GSFC (1.0 - 2.5 µm, 256 channels, 300 m pixels, 77 km swath). and
- Ultraviolet Cosmic Background (UCB), from UC Berkely (35 - 85 nm).
After reaching orbit, the satellite spun out of control and was losing power just days after launch because an attitude-control thruster remained in the on position longer than planned, so that Lewis could not manouver to its operational orbit and decayed soon after.
| Nation: | USA |
|---|---|
| Type / Application: | Earth observation |
| Operator: | NASA |
| Contractors: | TRW |
| Equipment: | HSI, LEISA, UCB |
| Configuration: | T200B |
| Propulsion: | |
| Power: | 2 deployable solar arrays, batteries |
| Lifetime: | 3 years (required 1 year), 5 years (goal) |
| Mass: | 386 kg |
| Orbit: | 523 km × 523 km, 97.5°, (planned); 124 km × 134 km, 97.5° |
| Satellite | COSPAR | Date | LS | Launch Vehicle | Remarks | |
|---|---|---|---|---|---|---|
| Lewis (SSTI 1) | 1997-044A | 23.08.1997 | Va SLC-6 | LMLV-1 (Athena-1) |
References:
- TRW: Small Spacecraft Technology Initiative
- NSSDC Master Catalog: SSTI-LEWIS
- NASA Mission and Spacecraft Library: SSTI
Further SSTI missions:
