July 29, 2021

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Student satellite components bombarded with heavy-ions during intense tests

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15/06/2021
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ESA Academy’s Fly Your Satellite! programme provides university students the lifetime-altering expertise of designing, developing, and even launching their individual nano-satellites into orbit. 

The third cycle began in March 2020, and incorporates the SpaceDot crew from the College of Thessaloniki (AUTh) in Greece, who are producing their ACubeSat project. For the previous few months, the staff has been planning for the significant-ion radiation examination, supported by engineers from ESA’s Radiation Hardness Assurance and Component Assessment section (TEC-QEC), to exam crucial elements of their on-board laptop or computer.

Making ready the take a look at setup

ACubeSat is a 3-unit CubeSat mission made to analyze the results of microgravity and radiation on the gene expression of a strain of yeast cells. This will advance lab-on-a-chip know-how for use in compact satellite missions, as well as aiding researchers to superior realize the effect remaining in house has on DNA – vital awareness for long term human endeavours in Earth orbit and past.
However, place is a tough surroundings for spacecraft. Once the protection of Earth’s environment is remaining behind, billed particles can penetrate electronics and potentially induce mission-ending degrees of injury. Even though nevertheless on Earth, engineers examine how factors will behave when strike by those people particles, ascertaining how inclined they are to malfunction, and exactly what happens when they fall short.

With this goal in head, two college college students from the SpaceDot group expended 17 – 21 May perhaps 2021 at the Cyclotron Source Centre at UCLouvain, Belgium, for a weighty-ion radiation take a look at at the Hefty Ion Facility (HIF). The staff is developing their own on-board personal computer subsystem to be the brains of ACubeSat as a crucial subsystem, it is necessary to at least examination all significant factors to assure that they will functionality very well, and predictably, when uncovered to radiation in room.

The SpaceDot crew was carefully supported by ESA’s (TEC-QEC) engineers for the planning, execution as effectively as for supplying the beam slot. They assisted the learners to define the objectives of the take a look at, structure the set-up, and carry out the tests at the facility. The ESA engineers also carried out delidding of the elements at ESTEC. Delidding is a procedure in which a component’s protective casing is partly removed to completely reveal the die, allowing for hefty-ions to penetrate the energetic areas.

A delidded part

Months of planning culminated in a week of powerful perform at UCLouvain. The workforce, together with an ESA engineer, labored all over the clock to expose more than 12 elements to the essential radiation problems. COVID recommendations were adhered to by all in attendance, which added an further, but essential, degree of complexity.

The target was on some of the most crucial components used in ACubeSat such as all the discrete components applied to construct the SEL (One Event Latchup) safety program, ensuring that they had been not on their own delicate to SEL. Moreover, a small time was devoted to test the behavior of the CAN transceiver, not only to SEL but also to other SEE induced mistakes. Again-up elements were being also ready for tests in the circumstance of unsuccessful check outcome of the primary element picked for the design. Regretably, not sufficient time was accessible to examination all foreseen elements, but the staff was capable to accumulate beneficial data to find the most robust parts for their style and design.

ACubeSat team all set to begin the examination

For this cause the end result of all this really hard do the job was globally a profitable test marketing campaign! The SpaceDot staff now have a superior knowledge of the components that will be utilized in ACubeSat’s on-board laptop or computer. The major ion examination was a precious studying practical experience for the pupils, who are now shut to finishing their Vital Design Critique. They will then continue to the subsequent period of the Fly Your Satellite! programme: Create Your Satellite!
This unique fingers-on expertise resulted in the workforce studying not only how to greater put together for a hefty-ion take a look at campaign, but also how to do the job beneath time stress and prolonged several hours, which may possibly be valuable to improved get ready for subsequent FYS tests.