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- Mars_2M_No.521 abstract "Mars 2M No.521, also known as Mars M-69 No.521 and sometimes identified by NASA as Mars 1969A, was a Soviet spacecraft which was lost in a launch failure in 1969. It consisted of an orbiter. The spacecraft was intended to image the surface of Mars using three cameras, with images being encoded for transmission back to Earth as television signals. It also carried a radiometer, a series of spectrometers, and an instrument to detect water vapour in the atmosphere of Mars. It was one of two Mars 2M spacecraft, along with Mars 2M No.522, which was launched in 1969 as part of the Mars programme. Neither launch was successful.The Mars 2M probes were originally intended to consist of both an orbiter and a lander. Time constraints did not permit the development of a soft lander, so engineers decided to simply use a hard lander that would crash into the Martian surface but gather data during its descent. At first, a modified Luna E-8 bus was to be used for the spacecraft, however it had a number of limitations that made it unsuitable for the long journey to Mars. Halfway through the project, Lavochkin Bureau design chief Georgi Babakin decided to simply discard the Luna E-8 derived probe and design a completely new one from scratch.However, the 2M probes ended significantly heavier than intended and engineers also ran out of time to conduct drop tests of the lander, so that part was abandoned which left only the orbiter. If successful, this would still be a major propaganda success for the Soviets as NASA was nearly three years away from attempting a Mars orbiter.As 1968 drew to a close, the project was lagging behind schedule and the US was also making significant headway in the space race with Mariners 6-7 scheduled to launch to Mars early in the next year and Apollo 8 taking astronauts into lunar orbit. The Kremlin wanted the Mars probes readied as soon as possible and the second of the two probes was completed in the middle of January. Despite doubts that the probes were ready to fly, they were delivered to Baikonour.".
- Mars_2M_No.521 wikiPageExternalLink 20th_soviet_mars.html.
- Mars_2M_No.521 wikiPageExternalLink past_missions_60s.html.
- Mars_2M_No.521 wikiPageID "5498780".
- Mars_2M_No.521 wikiPageLength "4938".
- Mars_2M_No.521 wikiPageOutDegree "21".
- Mars_2M_No.521 wikiPageRevisionID "707719710".
- Mars_2M_No.521 wikiPageWikiLink 2M_(spacecraft).
- Mars_2M_No.521 wikiPageWikiLink Altai_Mountains.
- Mars_2M_No.521 wikiPageWikiLink Apollo_8.
- Mars_2M_No.521 wikiPageWikiLink Atmosphere_of_Mars.
- Mars_2M_No.521 wikiPageWikiLink Baikonur_Cosmodrome.
- Mars_2M_No.521 wikiPageWikiLink Baikonur_Cosmodrome_Site_81.
- Mars_2M_No.521 wikiPageWikiLink Blok_D.
- Mars_2M_No.521 wikiPageWikiLink Category:1969_in_the_Soviet_Union.
- Mars_2M_No.521 wikiPageWikiLink Category:Mars_program.
- Mars_2M_No.521 wikiPageWikiLink Category:Missions_to_Mars.
- Mars_2M_No.521 wikiPageWikiLink Category:Spacecraft_launched_in_1969.
- Mars_2M_No.521 wikiPageWikiLink Launch_vehicle.
- Mars_2M_No.521 wikiPageWikiLink Lavochkin.
- Mars_2M_No.521 wikiPageWikiLink Mars_2M.
- Mars_2M_No.521 wikiPageWikiLink Mars_2M_No.522.
- Mars_2M_No.521 wikiPageWikiLink Mars_program.
- Mars_2M_No.521 wikiPageWikiLink Proton-K.
- Mars_2M_No.521 wikiPageWikiLink Serial_code.
- Mars_2M_No.521 wikiPageWikiLink Soviet_Union.
- Mars_2M_No.521 wikiPageWikiLink Water_vapor.
- Mars_2M_No.521 wikiPageWikiLinkText "2M No.521".
- Mars_2M_No.521 wikiPageWikiLinkText "Mars 2M No.521".
- Mars_2M_No.521 launchDate "--03-27".
- Mars_2M_No.521 launchRocket Blok_D.
- Mars_2M_No.521 launchRocket Proton-K.
- Mars_2M_No.521 launchRocket Serial_code.
- Mars_2M_No.521 launchRocket "240".
- Mars_2M_No.521 launchSite Baikonur_Cosmodrome.
- Mars_2M_No.521 launchSite Baikonur_Cosmodrome_Site_81.
- Mars_2M_No.521 manufacturer Lavochkin.
- Mars_2M_No.521 missionDuration "Failed to orbit".
- Mars_2M_No.521 missionType "Mars orbiter".
- Mars_2M_No.521 name "2".
- Mars_2M_No.521 spacecraftType "2M".
- Mars_2M_No.521 wikiPageUsesTemplate Template:Convert.
- Mars_2M_No.521 wikiPageUsesTemplate Template:Infobox_spaceflight.
- Mars_2M_No.521 wikiPageUsesTemplate Template:Mars_programme.
- Mars_2M_No.521 wikiPageUsesTemplate Template:Mars_spacecraft.
- Mars_2M_No.521 wikiPageUsesTemplate Template:Orbital_launches_in_1969.
- Mars_2M_No.521 wikiPageUsesTemplate Template:Portal.
- Mars_2M_No.521 wikiPageUsesTemplate Template:Reflist.
- Mars_2M_No.521 wikiPageUsesTemplate Template:Start-date.
- Mars_2M_No.521 wikiPageUsesTemplate Template:USSR-spacecraft-stub.
- Mars_2M_No.521 subject Category:1969_in_the_Soviet_Union.
- Mars_2M_No.521 subject Category:Mars_program.
- Mars_2M_No.521 subject Category:Missions_to_Mars.
- Mars_2M_No.521 subject Category:Spacecraft_launched_in_1969.
- Mars_2M_No.521 hypernym Spacecraft.
- Mars_2M_No.521 type ArtificialSatellite.
- Mars_2M_No.521 type CelestialBody.
- Mars_2M_No.521 type Place.
- Mars_2M_No.521 type Satellite.
- Mars_2M_No.521 type Mission.
- Mars_2M_No.521 type Location.
- Mars_2M_No.521 type Place.
- Mars_2M_No.521 type Thing.
- Mars_2M_No.521 comment "Mars 2M No.521, also known as Mars M-69 No.521 and sometimes identified by NASA as Mars 1969A, was a Soviet spacecraft which was lost in a launch failure in 1969. It consisted of an orbiter. The spacecraft was intended to image the surface of Mars using three cameras, with images being encoded for transmission back to Earth as television signals. It also carried a radiometer, a series of spectrometers, and an instrument to detect water vapour in the atmosphere of Mars.".
- Mars_2M_No.521 label "Mars 2M No.521".
- Mars_2M_No.521 sameAs Q2503162.
- Mars_2M_No.521 sameAs Марс_1969А.
- Mars_2M_No.521 sameAs Mars_1969A.
- Mars_2M_No.521 sameAs Mars_2M_No.521.
- Mars_2M_No.521 sameAs Mars_1969A.
- Mars_2M_No.521 sameAs Mars_1969A.
- Mars_2M_No.521 sameAs Mars_1969A.
- Mars_2M_No.521 sameAs Mars_2M.
- Mars_2M_No.521 sameAs Marte_1969A.
- Mars_2M_No.521 sameAs m.0dpkcx.
- Mars_2M_No.521 sameAs Марс_1969А.
- Mars_2M_No.521 sameAs Mars_1969A.
- Mars_2M_No.521 sameAs Q2503162.
- Mars_2M_No.521 sameAs 火星1969A號.
- Mars_2M_No.521 wasDerivedFrom Mars_2M_No.521?oldid=707719710.
- Mars_2M_No.521 isPrimaryTopicOf Mars_2M_No.521.