DTUsat is a student-built satellite complying with the CubeSat specifications found at www.cubesat.org.
The most remarkable specifications are the overall size and mass:
10x10x10 cm³ and 1 kg.
With so little volume and mass available the students are forced to think small. All-though this might seem as narrow constraints, using the CubeSat standard simplifies the launch issue.
The figure shows a 3D rendering of DTUsat. The canister in the top holds the Gravitational Gradient (GG) Boom during launch. From the GG Boom the Primary Payload (PPL) Antennas are unfolded. For attitude control DTUsat uses three magnetotorquers. Subsystem PCB's are stacked and interconnected with a stadardized interface. The power for DTUsat is provided by tripple junction GaAs cells, excess power is stored in a Li-Ion battery.
The objective of the satellite project is:
Lessons learned from the first DTUsat.
In June 2003 the first DTUsat was launched. Radio contact was never established, the exact reason for this remains unclear. As a consequence the next DTUsat will be built with ample time for validation and each sub-system group will be under strict guidance from the system engineering team. Furthermore the project will have an employee from DTU occupied full time with the DTUsat project.