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DLR-Tubsat
DLR-Tubsat [TUB]
DLR-Tubsat (Deutsche Forschungsanstalt für Luft- und Raumfahrt - TechnischeUniversität Berlin Satellit) is a joint project of the DLR and the Institute ofAeronautics and Astronautics at the Technical University of Berlin. Based on theexperience gained withTUBSAT-A andTUBSAT-Ban attitude control unit of minimal dimensions has been developed for the DLR-TUBSATmicrosatellite.
The satellite has a mass of approximately 45 kg and a cubic shape of 32 cm length. It ismainly used for high resolution Earth observation tasks. This is done in a live TV modewith a three head camera system with different focal lengths, resulting in a resolution of370 meter down to six meter per pixel. The pictures can be received with a standardsatellite dish with a minimum of three meter diameter. The mission scenario implies, thatthe users transmits the coordinates of a point on the earth and the satellite computes theneeded attitude control actions to track this point during the crossing.
The S-Band antenna (white cylinder on the right) has the same direction as the optics.The antenna is a helix antenna and has an opening of 70 degrees. To receive the signal ofthe satellite the user will have to be within a 70 degree cone around the optical axis.This means one can only make pictures of an area within aproximatly 1000 km range of yourreceiving ground station.
The control is done by transmitting ground coordinates to the satellite. Attitudecontrol is done with three reaction wheels and three fibre optic laser gyros. After thecontact is over, the satellite disables all its systems but the TTC and the OBDH and goesinto what was called "barbeque mode": It is tumbeling freely without attitudecontrol so that it is warmed up by the sun from all sides.
| Nation: | Germany |
|---|---|
| Type / Application: | Earth observation |
| Operator: | DLR |
| Contractors: | TU-Berlin |
| Equipment: | TV cameras |
| Configuration: | Tubsat-C Bus |
| Propulsion: | None |
| Power: | Solar cells, batteries |
| Lifetime: | |
| Mass: | 45 kg |
| Orbit: | 716 km × 737 km, 98.36° |
| Satellite | COSPAR | Date | LS | Launch Vehicle | Remarks | |
|---|---|---|---|---|---|---|
| DLR-Tubsat (Tubsat 5) | 1999-029B | 26.05.1999 | Sr FLP | PSLV-G (2) | withIRS P4,Kitsat 3 |
References:
- TU-Berlin, Institut für Luft- und Raumfahrt:DLR-TUBSAT
- VECTRONIC Aerospace:DLR-TUBSAT
- Tubsat 1 (Tubsat A)
- Tubsat 2 (Tubsat B)
- Tubsat 3 (Tubsat N)
- Tubsat 4 (Tubsat N1)
- Tubsat 5 (DLR-Tubsat)
- Tubsat 6 (Maroc-Tubsat)
- Tubsat 7 (LAPAN-Tubsat)
- Tubsat 8, 9, 10, 11, 17 (BeeSat 1, 2, 3, 4, 9)
- Tubsat 12 (TechnoSat)
- Tubsat 13, 14, 15, 16 (S-Net A, B, C, D)
- Tubsat 18, 19, 20, 21, 23, 24, 25, 26 (BeeSat 5, 6, 7, 8, 10, 11, 12, 13)
- Tubsat 22 (SALSAT)
- Tubsat 27 (TUBIN)
- Tubsat 28, 29 (NanoFF A, B)
- Tubsat 30 (OOV-Cube)
- Tubsat 31 (InnoCubE)
- CyBEEsat
