MAVEN

Mars Atmosphere and Volatile EvolutioN
Logo
COSPAR2013-063A
Start18. listopadu 2013, 18:28 UTC
KosmodromMys Canaveral
Nosná raketaAtlas V
Stav objektuna oběžné dráze Marsu
ProvozovatelNASA
Druhplanetární sonda
Mateřské tělesoMars
ProgramGoddardovo kosmické středisko
Hmotnost809 kg
Parametry dráhy
Apoapsida6 000 km
Periapsida150 km
Teleskop
Průměr11,43 m
Oficiální webOficiální web
Některá data mohou pocházet z datové položky.

MAVEN (zkratka z anglického názvu Mars Atmosphere and Volatile Evolution) je planetární sonda navržena k výzkumu atmosfér Marsu. Sonda má hmotnost 4,5 tuny a na svou cestu k Marsu byla vyslána v pondělí 17. listopadu 2013 agenturou NASA.[1] Sonda byla navedena na eliptickou orbitu (s maximem 6 200 km a minimem 150 km nad povrchem) Marsu 22. září 2014.[2][3]

Popis sondy

Umělecká představa sondy MAVEN ve vesmíru

Samotná sonda byla postavena a testována společností Lockheed Martin Space Systems. Cena projektu je 671 milionů dolarů. Její návrh vychází z předchozích sond Mars Reconnaissance OrbiterMars Odyssey. Těleso sondy tvoří hranol o velikosti 2,3×2,3×2 metry[4] se dvěma solárními panely na stranách, na jejichž koncích jsou umístěny magnetometry. S nimi dosahuje sonda celkové délky 11,4 metru.[5] Komunikační systém byl sondě dodán od Jet Propulsion Laboratory, jeho přenosová kapacita dosahuje 10 Mibit/s,[6] nicméně výrazně eliptická orbita sondy bude snižovat rychlost přenosu.

Historie

Mise byla vybrána komisí NASA k realizaci 15. září 2008, jakožto mise pro rok 2013 z řady Mars Scout.[7]

Cíl mise

Od roku 2014 sonda provádí s pomocí svých přístrojů průzkum horních vrstev již nepatrné atmosféry a pomoci tak získat další informace o historii planety. K planetě dolétla v září 2014. Oblétat ji bude ve výškách od 125 do 6 100 km.[8]

Průběh letu

Start rakety Atlas V se sondou MAVEN

Start byl uskutečněn raketou Atlas Vfloridského kosmodromu Mys Canaveral v pondělí 17. listopadu 2013 večer.

Na oběžnou dráhu Marsu se sonda dostala 22. září 2014,[9] přibližně 2 dny před příletem indické sondy Mangalaján.

Odkazy

Reference

  1. Novinky, ČTK. Odstartovala sonda Maven. Má zjistit, kam zmizela atmosféra Marsu. Novinky.cz [online]. Borgis, 2013-11-18 [cit. 2013-11-18]. Dostupné v archivu pořízeném z originálu dne 2013-11-19. 
  2. Maven's Haven: NASA's Next Mars Mission Preps for Launch
  3. Rozhlas. Sonda MAVEN dorazila k Marsu. Zkoumat bude atmosféru rudé planety. Rozhlas.cz [online]. 22. září 2014 [cit. 16.března 2015]. Dostupné online. 
  4. MAVEN Mission Primary Structure Complete Archivováno 11. 11. 2013 na Wayback Machine..
  5. MAVEN – Facts
  6. The Electra Proximity Link Payload for Mars Relay Telecommunications and Navigation [online]. 2003-09-29 [cit. 2013-01-11]. Dostupné v archivu pořízeném dne 2013-05-02. (anglicky) 
  7. Thumbs Up Given for 2013 NASA Mars Orbiter. www.jpl.nasa.gov. October 5, 2010. Dostupné online [cit. 2010-10-05]. (anglicky) 
  8. Lidovky. Sonda NASA míří luštit hádanku osudu vody a atmosféry Marsu. lidovky.cz [online]. 2013-10-18 [cit. 2013-11-19]. Dostupné online. 
  9. ČTK. Sonda MAVEN zakotvila po 711 miliónech kilometrů na Marsu, má rozluštit záhadu rudé planety. Novinky.cz [online]. Borgis, 2014-09-22 [cit. 2014-09-22]. Dostupné online. 

Externí odkazy

Média použitá na této stránce

Mars-MAVEN-Orbiter-20140921.jpg
NASA's Newest Mars Mission Spacecraft Enters Orbit around Red Planet

September 21, 2014

http://www.jpl.nasa.gov/news/news.php?release=2014-318

http://www.nasa.gov/press/2014/september/nasa-s-newest-mars-mission-spacecraft-enters-orbit-around-red-planet

[IMAGE] MAVEN (Artist's Concept) This image shows an artist concept of NASA's Mars Atmosphere and Volatile Evolution (MAVEN) mission.

NASA's Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft successfully entered Mars' orbit at 7:24 p.m. PDT (10:24 p.m. EDT) Sunday, Sept. 21, where it now will prepare to study the Red Planet's upper atmosphere as never done before. MAVEN is the first spacecraft dedicated to exploring the tenuous upper atmosphere of Mars.

"As the first orbiter dedicated to studying Mars' upper atmosphere, MAVEN will greatly improve our understanding of the history of the Martian atmosphere, how the climate has changed over time, and how that has influenced the evolution of the surface and the potential habitability of the planet," said NASA Administrator Charles Bolden. "It also will better inform a future mission to send humans to the Red Planet in the 2030s."

After a 10-month journey, confirmation of successful orbit insertion was received from MAVEN data observed at the Lockheed Martin operations center in Littleton, Colorado, as well as from tracking data monitored at NASA's Jet Propulsion Laboratory navigation facility in Pasadena, California. The telemetry and tracking data were received by NASA's Deep Space Network antenna station in Canberra, Australia.

"NASA has a long history of scientific discovery at Mars and the safe arrival of MAVEN opens another chapter," said John Grunsfeld, astronaut and associate administrator of the NASA Science Mission Directorate at the agency's Headquarters in Washington. "Maven will complement NASA's other Martian robotic explorers-and those of our partners around the globe-to answer some fundamental questions about Mars and life beyond Earth."

Following orbit insertion, MAVEN will begin a six-week commissioning phase that includes maneuvering into its final science orbit and testing the instruments and science-mapping commands. MAVEN then will begin its one Earth-year primary mission, taking measurements of the composition, structure and escape of gases in Mars' upper atmosphere and its interaction with the sun and solar wind.

"It's taken 11 years from the original concept for MAVEN to now having a spacecraft in orbit at Mars," said Bruce Jakosky, MAVEN principal investigator with the Laboratory for Atmospheric and Space Physics at the University of Colorado, Boulder (CU/LASP). "I'm delighted to be here safely and successfully, and looking forward to starting our science mission."

The primary mission includes five "deep-dip" campaigns, in which MAVEN's periapsis, or lowest orbit altitude, will be lowered from 93 miles (150 kilometers) to about 77 miles (125 kilometers). These measurements will provide information down to where the upper and lower atmospheres meet, giving scientists a full profile of the upper tier.

"This was a very big day for MAVEN," said David Mitchell, MAVEN project manager from NASA's Goddard Space Flight Center, Greenbelt, Maryland. "We're very excited to join the constellation of spacecraft in orbit at Mars and on the surface of the Red Planet. The commissioning phase will keep the operations team busy for the next six weeks, and then we'll begin, at last, the science phase of the mission. Congratulations to the team for a job well done today."

MAVEN launched Nov. 18, 2013, from Cape Canaveral Air Force Station in Florida, carrying three instrument packages. The Particles and Fields Package, built by the University of California at Berkeley with support from CU/LASP and Goddard, contains six instruments that will characterize the solar wind and the ionosphere of the planet. The Remote Sensing Package, built by CU/LASP, will identify characteristics present throughout the upper atmosphere and ionosphere. The Neutral Gas and Ion Mass Spectrometer, provided by Goddard, will measure the composition and isotopes of atomic particles.

The spacecraft's principal investigator is based at CU/LASP. The university provided two science instruments and leads science operations, as well as education and public outreach, for the mission.

NASA Goddard Space Flight Center manages the project and also provided two science instruments for the mission. Lockheed Martin built the spacecraft and is responsible for mission operations. The Space Sciences Laboratory at the University of California at Berkeley provided four science instruments for MAVEN. JPL provides navigation and Deep Space Network support, and Electra telecommunications relay hardware and operations. JPL, a division of the California Institute of Technology in Pasadena, manages the Mars Exploration Program for NASA.

To learn more about the MAVEN mission, visit:

http://www.nasa.gov/maven

and

http://mars.nasa.gov/maven/
Atlas V launches with MAVEN (201311180003HQ).jpg
The United Launch Alliance Atlas V rocket with NASA’s Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft launches from the Cape Canaveral Air Force Station Space Launch Complex 41, Monday, Nov. 18, 2013, Cape Canaveral, Florida. NASA’s Mars-bound spacecraft, the Mars Atmosphere and Volatile EvolutioN, or MAVEN, is the first spacecraft devoted to exploring and understanding the Martian upper atmosphere.
Artist concept of MAVEN spacecraft.jpg
Artist concept of MAVEN spacecraft.
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Autor: Xander, Licence: CC BY-SA 2.5
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MAVEN Mission Logo.png
The Mars Atmosphere and Volatile Evolution, or MAVEN, mission is being prepared for its scheduled launch on Nov 18, 2013 from Cape Canaveral Air Force Station, Fla. atop a United Launch Alliance Atlas V rocket. Positioned in an orbit above the Red Planet, MAVEN will study the upper atmosphere of Mars in unprecedented detail. It will arrive at Mars in fall 2014. After a five-week transition period during which it will get into its final orbit, deploy booms, and check out the science instruments, MAVEN will carry out its one-Earth-year primary mission. MAVEN will have enough fuel to survive for another six years and will act as a data relay for spacecraft on the surface, as well as continue to take important science data. MAVEN's principal investigator is based at the University of Colorado, Boulder's Laboratory for Atmospheric and Space Physics CU/LASP. The university provided science instruments and leads science operations, as well as education and public outreach, for the mission. NASA Goddard Space Flight Center NASA GSFC, Greenbelt, Md. manages the project and provided two of the science instruments for the mission. The University of California at Berkeley's Space Sciences Laboratory UCB/SSL provided science instruments for the mission. Lockheed Martin LM built the spacecraft and is responsible for mission operations. NASA's Jet Propulsion Laboratory NASA JPL in Pasadena, Calif., provides navigation support, Deep Space Network support, and Electra telecommunications relay hardware and operations.