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Kazachok

From Wikipedia, the free encyclopedia
For the traditional Cossacks dance, seeKozachok.

Kazachoklander
NamesExoMars 2020 Surface Platform[1][2]
Mission typeMarslanderandrover
OperatorRoscosmosandESA
Websiteexploration.esa.int/web/mars/-/56933-exomars-2020-surface-platform
Mission durationPlanned: 2 Earth years[3]
Spacecraft properties
ManufacturerLavochkin
Launch massLander: 827.9 kg (1,825 lb)
Rover: 310 kg (680 lb)
Payload massLander: 45 kg (99 lb)
PowerSolar panels[4]
Marslander
Landing siteOxia Planum
ExoMarsprogramme

TheExoMarsKazachok(Russian:Казачок;formerlyExoMars 2020 Surface Platform[2]) was a planned roboticMars landerled byRoscosmos,part of theExoMars2022 joint mission with theEuropean Space Agency.Kazachoktranslates as "LittleCossack",and is also the name of anEast Slavic folk dance.

The plan calls for a RussianProton-Mrocket to launch the Russian-built lander that will deliver theRosalind Franklinroverto the surface of Mars.[6]Once safely landed,Kazachokwill deploy the rover and will start a one Earth-year mission to investigate the surface environment at the landing site.[7]

The spacecraft was scheduled to launch in 2020 and land on Mars in mid 2021,[6]but due to the failure of the entry parachutes to pass testing, the launch was moved to a twelve-daylaunch windowstarting on 20 September 2022.[8]

In March 2022, amidst the backdrop of theRussian invasion of Ukraine,the European Space Agency voted to suspend their cooperation with Russia on the ExoMars mission, placing the future of theKazachoklander in jeopardy.[9]ESA would later terminate their cooperation with Russia on the project.[10]

Scientific instruments

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TheKazachoklander project is led byRoscosmos,but its scientific payload will also include two European instruments and European contributions to four Russian-led instruments. The payload mass is about 45 kg and consists of the following instruments (plus an instrument interface and memory unit (BIP)):[7][3]

  • TheLander Radioscienceexperiment (LaRa) will study the internal structure of Mars, will help to understand the sublimation/condensation cycle of atmospheric CO2,and will make precise measurements of the rotation and orientation of the planet by monitoring two-way Doppler frequency shifts between the lander and Earth.[11]It will also detect variations in angular momentum due to the redistribution of masses, such as the migration of ice from the polar caps to the atmosphere. Developed by Belgium.
  • TheHabitability, Brine, Irradiation and Temperature(HABIT) package will investigate the amount of water vapour in the atmosphere, daily and seasonal variations in ground and air temperatures, and the UV radiation environment. Developed by Sweden.
  • Meteorological package (MTK). Led by Russia. The package will incorporate the following sensors:
    • Pressure and humidity sensors (METEO-P, METEO-H).[12]Developed by Finland. The sensors have extensive heritage from those in theCuriosityrover,Schiaparellilander andPhoenixlander.[12]
    • Meteorological boom, incorporating: 3 atmospheric temperature sensors; Solar Irradiance (SIS20) and Dust (DS20) sensors (developed by Spain); METEO-H (see above), and wind sensor.
    • Anisotropic Magneto-Resistance (AMR) sensor to measure magnetic fields. Developed by Spain.
    • Optical Depth Sensor (ODS).
    • Microphone.
    • Descent and Landing Unit (MTK-L) for atmospheric temperature and pressure, and acceleration & angular rate.
    • Upward-looking LIDAR.
  • Amagnetometer(MAIGRET), developed by Russia. The instrument will incorporate the Wave Analyser Module (WAM),[13]developed by the Czech Republic.
  • A set of four cameras (TSPP) to characterise the landing site environment. Developed by Russia.
  • AnIR Fourier spectrometer(FAST) to study the atmosphere. Developed by Russia.
  • Active Detection of Radiation of Nuclei-ExoMars(ADRON-EM). Developed by Russia, including also a radiation dosimeter (Liulin-ML) from Bulgaria.
  • Multi-channel Diode-Laser Spectrometer (M-DLS) for atmospheric investigations. Developed by Russia.
  • Radio thermometer (RAT-M) for soil temperatures. Developed by Russia.
  • Dust particle size, impact, and atmospheric charging instrument suite (PK). Developed by Russia, including also contributions from Italy (MicroMED) and France (electrical conductivity sensor).
  • Aseismometer(SEM). Developed by Russia.[14]
  • Gas chromatography–mass spectrometry(MGAK) for atmospheric analysis. Developed by Russia.
Power source

The science and communication instruments on the lander will be powered bysolar panelsand rechargeable batteries.[4]The automated voltage power system is being developed and build byISS Reshetnev.[4]

Russia previously evaluated the option of using aradioisotope thermoelectric generator(RTG) to power the science instruments,[15]and aradioisotope heater unit(RHU) to provide thermal control while on the frozen Martian surface.[16]

Landing site selection

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Main article:ExoMars § Landing site selection
Oxia Planum,near the equator, is a proposed landing site for its smooth surface and potential to preserve biosignatures

After a review by an ESA-appointed panel, a short list of four sites was formally recommended in October 2014 for further detailed analysis:[17][18]

On 21 October 2015,Oxia Planumwas chosen as the preferred landing site for the ExoMars rover, now theRosalind Franklinrover,assuming a 2018 launch. But since the launch was postponed to 2020, Aram Dorsum and Mawrth Vallis are also being considered.[19][20]ESA convened further workshops to re-evaluate the three remaining options and in March 2017 selected two sites to study in detail:

After deliberation, ESA selected Oxia Planum to be the landing site in November 2018.[21][22]

References

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  1. ^"ExoMars 2018 Surface Platform Experiment Proposal Information Package (pdf, 8.3 MB)".European Space Agency. 31 March 2015.Retrieved4 October2016.
  2. ^abMeet 'Kazachok': Landing Platform for ExoMars Rover Gets a Name.Mike Wall,Spaceflight.22 March 2019.
  3. ^abExoMars-2020 Surface Platform scientific investigation.Daniel Rodionov, Lev Zelenyi, Oleg Korablev, Ilya Chuldov and Jorge Vago. EPSC Abstracts. Vol. 12, EPSC2018-732, European Planetary Science Congress 2018.
  4. ^abcISS-Reshetnev chosen for ExoMars-2020 project.ISS-Reshetnev. 23 November 2016.
  5. ^Krebs, Gunter."ExoMars".Gunter's Space Page.Retrieved12 March2020.
  6. ^ab"Russia and Europe Team Up for Mars Missions".Space.com.14 March 2013.Retrieved24 January2016.
  7. ^ab"Exomars 2018 surface platform".European Space Agency.Retrieved14 March2016.
  8. ^"Joint Europe-Russia Mars rover project is parked".BBC.17 March 2022.Retrieved17 March2022.
  9. ^"Joint Europe-Russia Mars rover project is parked".BBC News.17 March 2022.Retrieved17 March2022.
  10. ^"Europe ending cooperation with Russia on life-hunting Mars rover".Space.com.
  11. ^LaRa (Lander Radioscience) on the ExoMars 2020 Surface Platform.(PDF) Véronique Dehant, Sébastien Le Maistre, Rose-Marie Baland, et al. EPSC Abstracts. Vol. 12, EPSC2018-31, 2018. European Planetary Science Congress 2018.
  12. ^abController for in-situ pressure and humidity measurements on board ExoMars 2020 Surface Platform.Nikkanen, Timo; Genzer, Maria; Hieta, Maria; Harri, Ari-Matti; Haukka, Harri; Polkko, Jouni; Meskanen, Matias. 20th EGU General Assembly, EGU2018, Proceedings from the conference held 4–13 April 2018 in Vienna, Austria, p.7507. April 2018.
  13. ^Wave analyzer module of the MAIGRET instrument onboard Surface Platform of the ExoMars 2020 mission.Santolik, Ondrej; Kolmasova, Ivana; Uhlir, Ludek; Skalsky, Alexander; Soucek, Jan; Lan, Radek. 42nd COSPAR Scientific Assembly. Held 14–22 July 2018, in Pasadena, California, USA, Abstract id. B4.2-39-18. July 2018.
  14. ^Алексей Андреев.И на Марсе может здорово трясти,20 Мая 2019
  15. ^Amos, Jonthan (21 June 2013)."Looking forward to Europe's 'seven minutes of terror'".BBC News.
  16. ^Zak, Anatoly (3 March 2016)."ExoMars 2018".Russian Space Web.Retrieved15 March2016.
  17. ^"Four Candidate Landing Sites for ExoMars 2018".ESA.Space Ref. 1 October 2014.Retrieved1 October2014.[permanent dead link]
  18. ^"Recommendation for the Narrowing of ExoMars 2018 Landing Sites".ESA.1 October 2014.Retrieved1 October2014.
  19. ^Amos, Jonathan (21 October 2015)."ExoMars rover: Landing preference is for Oxia Planum".BBC News.Retrieved22 October2015.
  20. ^Atkinson, Nancy (21 October 2015)."Scientists Want ExoMars Rover to Land at Oxia Planum".Universe Today.Retrieved22 October2015.
  21. ^"Landing Site".ESA.Retrieved12 March2020.
  22. ^Amos, Jonathan (9 November 2018)."ExoMars: Life-detecting robot to be sent to Oxia Planum".BBC News.Retrieved12 March2020.
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