AAUsat-2
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AAUSAT-II is the second student-built CubeSat built and operated by students from University of Aalborg in Denmark. It was launched 28 April 2008 05:54 UTC from Satish Dhawan Space Centre in India on a PSLV rocket. AAUSAT-II carries a radiation sensor.
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[edit] The educational objective
The primary purpose of construction of satellites at Aalborg University is to give the students engineering capabilities beyond what is normally achieved within a master study.
[edit] History
Student satellite activities at Aalborg University (AAU) started in 2003 as a result of AAU's involvement in the first pure Danish research satellite, Ørsted, which was successfully launched in 1999.
AAUSAT-II's predecessor was AAU CubeSat which was constructed in the period 2001-2003 and was launched 30 June 2003.
The construction of AAUSAT-II began in 2005.
[edit] Operations
After launch April 28th 2008 AAUSAT-II beacon was received at CalPoly University in California.
The following weeks beacons was received but no two way communication was obtained.
It turned out that AAUSAT-II was transmitting at a lower level than anticipated.
Afterwards the ground station has been upgraded, resulting in fully functional two way communication.
[edit] Mission definition
AAUSAT-II consists of several sub-systems:
- ADCS: Attitude Determination and Control System
- CDH: Command and Datahandling System
- COM: Communication System
- EPS: Electrical Power System
- GND: Ground Station
- MCC: Mission Control Center
- MECH: Mechanical System
- OBC: On-board Computer System
- P/L: Payload System
Technical Facts:
| Dimensions | 100 × 100 × 113 mm Cubesat standard |
| Mass | 750 gram |
| Expected lifetime | Minimum 1 month, extended until end of lifetime |
| Attitude determination system | Sun sensors, gyro sensors, magnetometers |
| Attitude control system | Momentum wheel and magnetic coils |
| Power | Solar-cell panels located in satellite surface |
| Batteries | Li-ion 8.2V 2200 mAh |
| Power bus | 3.3 and 5V regulated |
[edit] HAM information
- Callsign: OZ2CUB
- Up/downlink: 437.425 MHz AFSK & FSK
- Bit rate: 1200-9600 bit/s (1200 as standard mode)
- AX.25 FM CW TLM
