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Mars flyby

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Mars flyby

Data collected from Mariner 4's flyby on a modern map

A Mars flyby is a movement of spacecraft passing in the vicinity of the planet Mars, but not entering orbit or landing on it.[1] Unmanned space probes have used this method to collect data on Mars, as opposed to orbiting or landing.[2] A spacecraft designed for a flyby is also known as a "flyby bus" or "flyby spacecraft".[3]

One application of a Mars flyby is for a human mission, where after landing and staying on the surface for some time the ascent stage has a space rendezvous with another, unmanned spacecraft, thas was launched separately from Earth, flying by. This would mean the ascent stage of the lander to reach the speed necessary equal to that of the spacecraft flying by, but the resources needed for Earth return would not have to enter or leave Mars orbit.[1][4]

The spacecraft they live in on the journey to Mars does the flyby, but the crew separates and goes into a lander.[1] The Excursion module's ascent stage must rejoin the main spacecraft before it gets too far away.[1] An advantage is that the resources needed for Earth return don't have to enter and leave Mars orbit, but the ascent stage has to perform space rendezvous in solar orbit and the time on Mars is constrained by the need to this.[1][4] Mars cyclers orbit the Sun in such a way as to pass by Mars and the Earth on regular intervals, performing Mars flybys on regular intervals. The crews would live on the stations during the interplanetary voyages. The concept for Flyby-Excursion Landing Module is that a lander and flyby would separate in solar orbit, the lander would accelerate to get to Mars first, then land on Mars meanwhile the other segment does a Mars flyby, then the lander takes off and rendezvous with the flyby segment transferring the crew over.[5]

Alternately, a flyby-only human mission is also possible, without detaching at Mars, but to slingshot around Mars and back to Earth.[6]

List of Mars flybys

References

  1. ^ a b c d e Page 15-16 in Chapter 3 of David S. F. Portree's Humans to Mars: Fifty Years of Mission Planning, 1950 - 2000, NASA Monographs in Aerospace History Series, Number 21, February 2001. Available as NASA SP-2001-4521.
  2. ^ a b Space probe performs Mars fly-by - BBC
  3. ^ (2006) - Page 171Encyclopedia Of Space And AstronomyJoseph A. Angelo -
  4. ^ a b Astronautica - FLEM
  5. ^ W.I.R.E.D.
  6. ^ Washington Post, "Dennis Tito’s mission to Mars: Launching in 2018 for the children (and to beat China)", Brian Vastag, 27 February 2013
  7. ^ Rayman, Marc D. "Dawn Journal: Aiming away from a bull's eye at Mars". The Planetary Society. Retrieved 2010-03-21. 
  8. ^ Malik, Tariq (February 18, 2009). "Asteroid-Bound Probe Zooms Past Mars". Space.com. Retrieved 2010-03-21. 
  9. ^ ESA - Rosetta successfully swings-by Mars,
  10. ^ NSSDC - Nozomi
  11. ^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 29 July 2010. 
  12. ^ Zak, Anatoly. "Russia's unmanned missions to Mars". RussianSpaecWeb. Retrieved 29 July 2010. 
  13. ^ Wade, Mark. "Mars". Encyclopedia Astronautica. Retrieved 29 July 2010. 
  14. ^ a b The Soviet Mars program, Professor Chris Mihos, Case Western Reserve University
  15. ^ NASA - Mars 6

External links

  • Astronautix - Mars flyby
  • Mars by Rosetta Annotated ESA source
  • Mariner 6 montage
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