EIRSAT-1

Last updated

EIRSAT-1
NamesEducational Irish Research Satellite-1
Mission type Technology demonstration
Operator University College Dublin
COSPAR ID 2023-185L
SATCAT no. 58472
Website eirsat1.ie
Mission duration9-24 months (planned)
10 months
(in progress)
Spacecraft properties
Spacecraft CubeSat
Spacecraft type2U CubeSat
ManufacturerUniversity College Dublin
Launch mass2.305 kg (5.08 lb)
Dimensions10.67 cm × 10.67 cm × 22.7 cm (4.20 in × 4.20 in × 8.94 in)
Power2.217 watts
Start of mission
Launch date1 December 2023, 18:19 UTC [1]
Rocket Falcon 9 B1061.17
Launch site Vandenberg SLC-4E
Contractor SpaceX
Orbital parameters
Reference system Geocentric
Regime Sun-synchronous
Transponders
Band UHF [2]
Frequency437.1 MHz [2]
EIRSAT-1 Logo.png

EIRSAT-1 (Educational Irish Research Satellite-1) is a European Space Agency-sponsored 2U CubeSat developed and built by University College Dublin (UCD) in Dublin, Ireland. [3]

Contents

On 1 December 2023, EIRSAT-1 launched on a Falcon 9 rocket from Vandenberg Space Force Base, California. Upon reaching orbit, it became Ireland's first satellite. [4]

Background

In March 2017, UCD students and professors proposed the satellite to the European Space Agency (ESA) Fly Your Satellite! 2 (FYS 2) educational program for universities. In May 2017, UCD was one of six university teams selected to participate in the ESA FYS2 program. [5] The mission passed its Preliminary Design Review (PDR) with both institutions involved, and following the Critical Design Review (CDR) in 2018, the mission has been developed and implemented by UCD with the support of the ESA Education Office. [6] Lorraine Hanlon, EIRSAT-1 Endorsing Professor, introduced the project during a panel after the Irish premiere of the film "16 Levers de Soleil" on 31 January 2019. [7]

The satellite cost €1,500,000 and is funded jointly by the ESA, the Irish Research Council, and Science Foundation Ireland. [8]

Mission

The mission of EIRSAT-1 is to advance education in space science and engineering across the whole island of Ireland through collaboration between student teams, higher education institutions and high-tech companies.

The objectives of EIRSAT-1 are to: [9] [8]

Payloads

EIRSAT-1 will carry three Irish developed experiments, or payloads. [10] [11]

GMOD - The Gamma-ray Module

The first payload element (called the ‘Gamma-ray Module’ or ‘GMOD’) is a miniaturised sensor for use in the detection of gamma-rays from both cosmic and atmospheric phenomena. [12] The sensor is called a silicon photomultiplier (SiPM) and has been developed by SensL Ltd. in County Cork (currently part of ON Semiconductor). The SiPM has the potential to revolutionise in-situ and remote sensing of gamma-rays in space by removing the need for conventional photomultiplier tubes that are typically very bulky, fragile and require high voltages to operate.

EMOD - the ENBIO Module

The second payload element (called the ‘ENBIO Module’ or ‘EMOD’) [12] will provide in-orbit demonstration of novel protective oxide surface treatments made by ENBIO Ltd. (SolarWhite and SolarBlack). [9] These surface treatments have been developed for use on the ESA Solar Orbiter mission, and EIRSAT-1 will provide the opportunity for these coatings to be thermally tested. The temperature of the coatings will be measured throughout the mission.

WBC - Wave Based Control

The third payload is a novel, software-based attitude control system developed by the Dynamics and Control Group in the UCD School of Mechanical and Materials Engineering. A spacecraft's “attitude” is its orientation in space. In this case it will use the Earth's magnetic field to turn itself in any desired direction. [9] The UCD control technique is called “Wave-Based Control” (WBC). [12] EIRSAT-1 will use a standard control system initially. At some time into the mission, in response to an instruction from Earth, the on-board computer will start using WBC to control the satellite's attitude, thereby evaluating its performance and, it is hoped, qualifying WBC for space flight.

Launch and operations

Subject to successful reviews, the spacecraft was initially scheduled to be launched in 2023 on a Vega-C rocket as part of the Small Satellites Mission Service #5 rideshare mission. [13] However after various delays the CubeSat was remanifested on the maiden flight of the Ariane 6 rocket. [14] This was later changed to a rideshare payload of the South Korean 425 Project SAR satellite launch, which took place at 18:19 UTC on 1 December 2023 on a SpaceX's Falcon 9 Block 5 launch vehicle. [1] [15] The payload was launched into a Sun-synchronous orbit.

On 21 August 2024, the Gamma-ray Module onboard EIRSAT-1 detected its first gamma-ray burst (GRB), a long type GRB which was given the official designation GRB240821B. This type of GRBs is caused by the death of a high-mass star. Gamma-ray Module's second detection of a GRB was made just an hour and 19 minutes after the first one and it was a short one, a much rarer type which is likely caused by the collision of two neutron stars and the formation of a black hole. This second detection was given the official designation GRB240821A. [16]

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References

  1. 1 2 SpaceX launches Irish, South Korean satellites and lands its 250th rocket Space.com, 2023-12-01.
  2. 1 2 "Calling all radio amateurs – be the first to hear satellite EIRSAT-1 from orbit". European Space Agency . 30 November 2023. Retrieved 1 December 2023.
  3. ↑ "About EIRSAT-1 | EIRSAT-1". eirsat1.ie. Retrieved 1 December 2023.
  4. ↑ Robinson-Smith, Will (1 December 2023). "SpaceX launches ride share mission with South Korean spy satellite, first Irish satellite". Spaceflight Now. Retrieved 1 December 2023.
  5. ↑ "European Space Agency gives go-ahead for Ireland's first satellite". Thejournal.ie. 23 May 2017. Retrieved 25 July 2017.
  6. ↑ "EIRSAT-1 - eoPortal Directory - Satellite Missions". directory.eoportal.org. Retrieved 14 July 2022.
  7. ↑ "The Night of Ideas in Dublin". Ministry of Europe and Foreign Affairs . 12 February 2019. Retrieved 14 June 2020.
  8. 1 2 Kearns, David (25 September 2018). "Countdown to lift-off for UCD scientists making Ireland's first satellite". University College Dublin . Retrieved 14 June 2020.
  9. 1 2 3 "Testing for Ireland's first satellite". ESA . 10 June 2020. Retrieved 14 June 2020.
  10. ↑ Goodbody, Will (24 September 2018). "Ireland's first satellite moves step closer to launch". RTE.ie. Retrieved 24 September 2018.
  11. ↑ "Towards the flight model: EIRSAT-1 survives an intense environmental qualification campaign". www.esa.int. Retrieved 14 July 2022.
  12. 1 2 3 "EIRSAT-1 experiments | EIRSAT-1". EIRSAT-1 | Ireland's first satellite. Retrieved 16 January 2019.
  13. ↑ Murphy, David (6 July 2022). "EIRSAT-1 / GMOD" (PDF). INAF . p. 24. Retrieved 29 July 2022.
  14. ↑ Dorminey, Bruce (13 August 2023). "Ireland's First Satellite Will Capture High Energy Cosmic Bursts". Forbes. Retrieved 2 September 2023.
  15. ↑ "Ireland's first satellite on its way to launch". ESA. 7 November 2023. Retrieved 7 November 2023.
  16. ↑ "Student-built satellite EIRSAT-1 detects not just one, but two gamma-rays bursts". www.esa.int. Retrieved 8 October 2024.
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