CENTRE FOR SMALL SATELLITE RESEARCH (CSSR)
A twin Nano-satellite is under development to establish an inter satellite communication link and to provide an improved temporal resolution by imaging a common region and transmit it to Ground Station using twin satellites. It consists of two satellites, STUDSAT-2A and STUDSAT-2B. The project is being developed by STUDS AT-2 Consortium which is formed by seven Engineering colleges (including NMAMIT, Nitte) of Karnataka and Vi svesvaraya Technological University (VTU), Belgaum.
It is provided with high resolution CMOS cameras and satellite separation mechanism. STUDSAT-2 looks forward to proving the concept of inter-satellite link (ISL) by establishing inter satellite communication.
NMAMIT is involved in the design of Mechanical structure for STUDSAT - 2. Following are the specifications of the Mechancial Structure:
- Dimension: 30x30x15cm
- Mass – 7kg each (Total mass:14kg)
- Camera resolution of 30m.
- ISL frequency (2.4GHz) identified as ISM band for student satellites.
- Downlink (UHF:433 MHz), Uplink (VHF: 144MHz)
- ARM Cortex M-4(32 bit RISC ARM processor)
- Power:Three solar panels (Two deployed, one body mounted) generating 23W of average power, Six Li-ion batteries of 5.2 Ampere- Hour capacity (each).
- Pointing accuracy =1 deg.
- Mission life: one year
The CAD/CAE platform chosen are Catia-V5, Hypermesh-14, Ansys-14 and Solid-Works, Mat lab, Keil. Some of the major parts of the satellite are Front-cam plate, Base plate, Back-cap plate and a few deployment mechanisms such as Solar panel deployment, Antenna Deployment, Satellite Separation mechanism are among the many mechanical parts. Torquer coil, gyroscope, micro- controller, magnetometer, cameras, PCBs, battery etc. are among the electronic parts which run the satellite. Designing and Analysis of the satellite structure to make it outer-space environment friendly and overcome the various obstacles that may come during the launch and as well during operating condition are the challenges a designer has to face in every single step of the process.
Different modules of STUDSAT-2PUBLICATIONS
“Design and Development of Structural Subsystem for Twin Nano- Satellites” Proceedings of 64th InternationalAstronautical Congress, Beijing, China, IAC13.E2.4.7, 23rd to 27th September 2013.