Frame

Our cubesats external frame will be purchased from ENDUROSAT (https://www.endurosat.com/cubesat-store/all-cubesat-modules/3u-cubesat-platform/)

  • Material: Al 6061-T6
  • Dimensions: 100mm x 100mm x 340.5mm (3U)

Assembly

One of our subsystem’s challenges was the precise and secure positioning of the components. Factors such as:

  • Limited space
  • Center of mass
  • Moment of inertia
  • Optimal placement

had to be considered, in order to finalize the design.

Vessel

A considerable amount of the available space will be taken by the vessel for the scientific experiment.

Goal is to protect and to contain the experiment under the conditions that will allow it to be executed smoothly. The pressurized vessel will contain atmospheric air at 1 atm.

Also of importance, is the location οf all the components of the experiment inside the vessel: 

  • the microchip, on which the experiment will be conducted
  • the microscope that will record the results
  • the nutrient as well as the waste tank 

Our subsystem should keep the chip focused on the microscope so that high quality images can be obtained.

Finally, to maintain the pressure that ensures cell survival, special O-rings will be used in the openings and expansion valves will be used to release the pressure if it exceeds 1.2 atm.

The real challenge facing our subsystem is to plan and research the container and carry out experiments in order to make its design successful.

FE analysis

In order for our subsystem’s work to be considered complete, all of the above must be tested for their structural strength, working on FEM programs. At this stage the following must be specified:

  • Geometry
  • Material of each component
  • Geometry mesh
  • External loads (max 18g during the launch)

Once this is finished, the visualization and evaluation of the results (mechanical stresses and deformations) remain, which might introduce changes in the design.