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- Atlas_G abstract "The Atlas G, also known as Atlas G Centaur-D1AR was an American expendable launch system derived from the Atlas-Centaur. It was a member of the Atlas family of rockets, and was used to launch seven communication satellites during the mid to late 1980s. Atlas G consisted of an improved Atlas core with modernized avionics and stretched propellant tanks. The Centaur stage also had several updated components and other technical improvements. It was replaced by the Atlas I, which had an improved guidance system.The maiden voyage of Atlas G was the launch of Intelsat 5 on June 9, 1984. Atlas performance was normal as was Centaur orbital injection, but during the coasting phase prior to the second Centaur burn, the stage's LOX tank split open. The Centaur and Intelsat tumbled end-over-end and were left in a useless orbit where they remained until reentering the atmosphere four months later.Investigation into the failure found that a minor fatigue crack developed in the Centaur LOX tank during staging and orbital injection, which eventually led to complete tank failure and loss of the mission. The uprated Centaur flown on Atlas G, among other changes, deleted the propellant boost pumps in the interest of greater simplicity and weight-saving. To compensate for this, LOX tank pressure was increased 25%. Although the tank had been designed to accommodate higher pressure, technicians at Convair inexplicably failed to test Centaur 5402 for leaks before shipping it to Cape Canaveral. In addition, engineers had not tested the Centaur G stages to verify if they could handle the shock from the explosive bolts on the booster firing during staging, but this test was performed later and the stage passed it.Finally, the leak testing program and tools used at Convair were outdated and less reliable than newer methods and the tech personnel in charge of fabricating the Centaur's balloon tanks were badly inexperienced. Ultimately, this was a symptom of the entire US space program in the 1980s as plans to entirely replace expendable launch vehicles with the Space Shuttle had resulted in large-scale budget cutbacks and layoffs of experienced technicians.Six more Atlas G/Centaur launches took place through 1989. These were:Intelsat 5A F-10, March 22, 1985Intelsat 5A F-11, June 30, 1985Intelsat 5A F-12, September 28, 1985FLTSATCOM 7, December 5, 1986FLTSATCOM 6, March 26, 1987 (launch failed after the booster was struck by lightning)FLTSATCOM 8, September 25, 1989The first stage was derived from the SM-65 Atlas missile, and a Centaur was used as the second stage. The first stage was also flown without the Centaur, as the Atlas H.".
- Atlas_G countryOrigin United_States.
- Atlas_G failedLaunches "2".
- Atlas_G finalFlight "1989-09-25".
- Atlas_G launchSite Cape_Canaveral_Air_Force_Station.
- Atlas_G launchSite Spaceport_Florida_Launch_Complex_36.
- Atlas_G maidenFlight "1984-06-09".
- Atlas_G manufacturer Convair.
- Atlas_G manufacturer General_Dynamics.
- Atlas_G rocketFunction Expendable_launch_system.
- Atlas_G status "Retired".
- Atlas_G successfulLaunches "5".
- Atlas_G thumbnail Atlas-G.jpg?width=300.
- Atlas_G totalLaunches "7".
- Atlas_G wikiPageID "21340138".
- Atlas_G wikiPageLength "3640".
- Atlas_G wikiPageOutDegree "16".
- Atlas_G wikiPageRevisionID "706886935".
- Atlas_G wikiPageWikiLink Atlas-Centaur.
- Atlas_G wikiPageWikiLink Atlas_(rocket_family).
- Atlas_G wikiPageWikiLink Atlas_H.
- Atlas_G wikiPageWikiLink Atlas_I.
- Atlas_G wikiPageWikiLink Cape_Canaveral_Air_Force_Station.
- Atlas_G wikiPageWikiLink Category:Atlas_(rocket_family).
- Atlas_G wikiPageWikiLink Category:Rockets_and_missiles.
- Atlas_G wikiPageWikiLink Centaur_(rocket_stage).
- Atlas_G wikiPageWikiLink Convair.
- Atlas_G wikiPageWikiLink Expendable_launch_system.
- Atlas_G wikiPageWikiLink Fleet_Satellite_Communications_System.
- Atlas_G wikiPageWikiLink General_Dynamics.
- Atlas_G wikiPageWikiLink SM-65_Atlas.
- Atlas_G wikiPageWikiLink Spaceport_Florida_Launch_Complex_36.
- Atlas_G wikiPageWikiLink United_States.
- Atlas_G wikiPageWikiLinkText "Atlas G Centaur-D1AR".
- Atlas_G wikiPageWikiLinkText "Atlas G".
- Atlas_G wikiPageWikiLinkText "Atlas-G Centaur-D1AR".
- Atlas_G caption "Launch of FLTSATCOM-7 on an Atlas G.".
- Atlas_G fail "2".
- Atlas_G first "1984-06-09".
- Atlas_G function Expendable_launch_system.
- Atlas_G last "1989-09-25".
- Atlas_G launches "7".
- Atlas_G manufacturer Convair.
- Atlas_G manufacturer General_Dynamics.
- Atlas_G name "Atlas G".
- Atlas_G sites Cape_Canaveral_Air_Force_Station.
- Atlas_G sites Spaceport_Florida_Launch_Complex_36.
- Atlas_G status "Retired".
- Atlas_G success "5".
- Atlas_G wikiPageUsesTemplate Template:Atlas_rockets.
- Atlas_G wikiPageUsesTemplate Template:Expendable_launch_systems.
- Atlas_G wikiPageUsesTemplate Template:Infobox_rocket.
- Atlas_G wikiPageUsesTemplate Template:Reflist.
- Atlas_G wikiPageUsesTemplate Template:Rocket-stub.
- Atlas_G wikiPageUsesTemplate Template:USA.
- Atlas_G wikiPageUsesTemplate Template:US_launch_systems.
- Atlas_G subject Category:Atlas_(rocket_family).
- Atlas_G subject Category:Rockets_and_missiles.
- Atlas_G hypernym System.
- Atlas_G type MeanOfTransportation.
- Atlas_G type Rocket.
- Atlas_G type Vehicle.
- Atlas_G type DesignedArtifact.
- Atlas_G type Thing.
- Atlas_G type Q41291.
- Atlas_G comment "The Atlas G, also known as Atlas G Centaur-D1AR was an American expendable launch system derived from the Atlas-Centaur. It was a member of the Atlas family of rockets, and was used to launch seven communication satellites during the mid to late 1980s. Atlas G consisted of an improved Atlas core with modernized avionics and stretched propellant tanks. The Centaur stage also had several updated components and other technical improvements.".
- Atlas_G label "Atlas G".
- Atlas_G sameAs Q862610.
- Atlas_G sameAs אטלס_G.
- Atlas_G sameAs Atlas_G.
- Atlas_G sameAs m.05f7xtk.
- Atlas_G sameAs Атлас-G.
- Atlas_G sameAs Q862610.
- Atlas_G wasDerivedFrom Atlas_G?oldid=706886935.
- Atlas_G depiction Atlas-G.jpg.
- Atlas_G isPrimaryTopicOf Atlas_G.
- Atlas_G name "Atlas G".