CENTRE FOR SMALL SATELLITE RESEARCH (CSSR)

  ABOUT STUDSAT

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.

DISCRIPTION

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

RESEARCH ACTIVITIES

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.

 Certain parameters to be concentrated during the designing and analysis processes are Static Test - for load capacity, Modal Test- to check for vibrations of body & parts, Thermal Test- to check for temperature resistance, Reliability Test and adjustments of parts in deployment mechanisms, Verification of overall functioning of controller under various environment conditions and for different inputs. Mechanisms such as Deployment of Solar panels and Antennas are simulated by using the CAD software.

                       

Different modules of STUDSAT-2

PUBLICATIONS

“Design and Development of Structural Subsystem for Twin Nano- SatellitesProceedings of 64th InternationalAstronautical Congress, Beijing, China, IAC13.E2.4.7, 23rd to   27th September 2013.