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- Project_Mogul abstract "Project Mogul (sometimes referred to as Operation Mogul) was a top secret project by the US Army Air Forces involving microphones flown on high-altitude balloons, whose primary purpose was long-distance detection of sound waves generated by Soviet atomic bomb tests. The project was carried out from 1947 until early 1949. The project was moderately successful, but was very expensive and was superseded by a network of seismic detectors and air sampling for fallout, which were cheaper, more reliable, and easier to deploy and operate.Project Mogul was conceived by Maurice Ewing who had earlier researched the deep sound channel in the oceans and theorized that a similar sound channel existed in the upper atmosphere: a certain height where the air pressure and temperature result in minimal speed of sound, so that sound waves would propagate and stay in that channel due to refraction. The project involved arrays of balloons carrying disc microphones and radio transmitters to relay the signals to the ground. It was supervised by James Peoples, who was assisted by Albert P. Crary.One of the requirements of the balloons was that they maintain a relatively constant altitude over a prolonged period of time. (See aerostat.) Thus instrumentation had to be developed to maintain such constant altitudes, such as pressure sensors controlling the release of ballast.The early Mogul balloons consisted of large clusters of rubber meteorological balloons, however, these were quickly replaced by enormous balloons made of polyethylene plastic. These were more durable, leaked less helium, and also were better at maintaining a constant altitude than the early rubber balloons. Constant-altitude-control and polyethylene balloons were the two major innovations of Project Mogul.Project Mogul was the forerunner of the Skyhook balloon program, which started in the late 1940s, as well as two other espionage programs involving overflights and photographic surveillance of the Soviet Union in the mid-1950s, Project Moby Dick and Project Genetrix. The spy balloon overflights raised storms of protest from the Soviets. The constant-altitude balloons also were used for scientific purposes such as cosmic ray experiments.Echoes of Mogul's experimental infrasound detection of nuclear tests exist today in ground-based detectors, part of so-called Geophysical MASINT (Measurement And Signal INTelligence). In 2013, this world-wide network of sound detectors picked up the large explosion of the Chelyabinsk meteor in Russia (see Chelyabinsk article for details). The strength of the sound waves was used to estimate the size of the explosion.".
- Project_Mogul wikiPageExternalLink 3704-charles-b-moore-1920-2010.
- Project_Mogul wikiPageExternalLink watch?v=EuhccACOd1U.
- Project_Mogul wikiPageID "43086".
- Project_Mogul wikiPageLength "4932".
- Project_Mogul wikiPageOutDegree "34".
- Project_Mogul wikiPageRevisionID "704325820".
- Project_Mogul wikiPageWikiLink Aerostat.
- Project_Mogul wikiPageWikiLink Albert_P._Crary.
- Project_Mogul wikiPageWikiLink Atmosphere_of_Earth.
- Project_Mogul wikiPageWikiLink Buoyancy_compensator_(aviation).
- Project_Mogul wikiPageWikiLink Category:Balloons_(aircraft).
- Project_Mogul wikiPageWikiLink Category:Cold_War_military_history_of_the_United_States.
- Project_Mogul wikiPageWikiLink Category:Military_projects.
- Project_Mogul wikiPageWikiLink Category:Projects_of_the_United_States_Air_Force.
- Project_Mogul wikiPageWikiLink Category:Roswell_UFO_incident.
- Project_Mogul wikiPageWikiLink Category:Soviet_Union–United_States_relations.
- Project_Mogul wikiPageWikiLink Chelyabinsk_meteor.
- Project_Mogul wikiPageWikiLink Classified_information.
- Project_Mogul wikiPageWikiLink Cosmic_ray.
- Project_Mogul wikiPageWikiLink Espionage.
- Project_Mogul wikiPageWikiLink Geophysical_MASINT.
- Project_Mogul wikiPageWikiLink Helium.
- Project_Mogul wikiPageWikiLink High-altitude_balloon.
- Project_Mogul wikiPageWikiLink Infrasound.
- Project_Mogul wikiPageWikiLink Maurice_Ewing.
- Project_Mogul wikiPageWikiLink Nuclear_weapons_testing.
- Project_Mogul wikiPageWikiLink Polyethylene.
- Project_Mogul wikiPageWikiLink Project_Genetrix.
- Project_Mogul wikiPageWikiLink Project_Moby_Dick.
- Project_Mogul wikiPageWikiLink Refraction.
- Project_Mogul wikiPageWikiLink Richard_A._Muller.
- Project_Mogul wikiPageWikiLink Roswell,_New_Mexico.
- Project_Mogul wikiPageWikiLink SOFAR_channel.
- Project_Mogul wikiPageWikiLink Seismology.
- Project_Mogul wikiPageWikiLink Skyhook_balloon.
- Project_Mogul wikiPageWikiLink Sound.
- Project_Mogul wikiPageWikiLink Soviet_Union.
- Project_Mogul wikiPageWikiLink United_States_Army_Air_Forces.
- Project_Mogul wikiPageWikiLink Weather_balloon.
- Project_Mogul wikiPageWikiLink YouTube.
- Project_Mogul wikiPageWikiLinkText "Mogul".
- Project_Mogul wikiPageWikiLinkText "Project Mogul".
- Project_Mogul wikiPageUsesTemplate Template:Main.
- Project_Mogul wikiPageUsesTemplate Template:Portal.
- Project_Mogul wikiPageUsesTemplate Template:Refimprove.
- Project_Mogul wikiPageUsesTemplate Template:Reflist.
- Project_Mogul subject Category:Balloons_(aircraft).
- Project_Mogul subject Category:Cold_War_military_history_of_the_United_States.
- Project_Mogul subject Category:Military_projects.
- Project_Mogul subject Category:Projects_of_the_United_States_Air_Force.
- Project_Mogul subject Category:Roswell_UFO_incident.
- Project_Mogul subject Category:Soviet_Union–United_States_relations.
- Project_Mogul hypernym Project.
- Project_Mogul type Band.
- Project_Mogul type Event.
- Project_Mogul type Aeronautic.
- Project_Mogul type Event.
- Project_Mogul comment "Project Mogul (sometimes referred to as Operation Mogul) was a top secret project by the US Army Air Forces involving microphones flown on high-altitude balloons, whose primary purpose was long-distance detection of sound waves generated by Soviet atomic bomb tests. The project was carried out from 1947 until early 1949.".
- Project_Mogul label "Project Mogul".
- Project_Mogul sameAs Q2414613.
- Project_Mogul sameAs Projecte_Mogul.
- Project_Mogul sameAs Projekt_Mogul.
- Project_Mogul sameAs Proyecto_Mogul.
- Project_Mogul sameAs Mogul-hanke.
- Project_Mogul sameAs Projet_Mogul.
- Project_Mogul sameAs פרויקט_מוגול.
- Project_Mogul sameAs Progetto_Mogul.
- Project_Mogul sameAs モーグル計画.
- Project_Mogul sameAs Projeto_Mogul.
- Project_Mogul sameAs m.0btqx.
- Project_Mogul sameAs Проект_«Могул».
- Project_Mogul sameAs Q2414613.
- Project_Mogul wasDerivedFrom Project_Mogul?oldid=704325820.
- Project_Mogul isPrimaryTopicOf Project_Mogul.