Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Superpressure_balloon> ?p ?o }
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- Superpressure_balloon abstract "A superpressure balloon is a style of aerostatic balloon where the volume of the balloon is kept relatively constant in the face of changes in the temperature of the contained lifting gas. This allows the balloon to keep a stable altitude for long periods. This is in contrast with much more common variable-volume balloons, which are either only partially filled with lifting gas, or made with more elastic materials.In a variable-volume balloon, the volume of the lifting gas changes due to heating and cooling in the diurnal cycle. The cycle is magnified by a greenhouse effect inside the balloon, while the surrounding atmospheric gas is subject to a much more limited cyclical temperature change. As the lift gas heats and expands, the displacement of atmospheric gas increases, while the balloon weight remains constant. Its buoyancy increases, and this leads to a rise in altitude unless it is compensated by venting gas. Conversely, if the balloon cools and drops, it becomes necessary to release ballast. Since both ballast and gas are finite, there is a limit to how long a variable-volume balloon can compensate in order to stabilize its altitude. In contrast, a superpressure balloon will change altitude much less without compensation maneuvres.Since the volume of the balloon is more constrained, so is the volume of air displaced by it. In accordance with the Principle of Archimedes, the upwards force on the balloon is equal to the weight of the displaced ambient gas. But the weight of the atmospheric gas is reduced as the balloon rises, because its density diminishes with increasing altitude. So the force pushing the balloon upwards diminishes with altitude and at some particular altitude the upwards force will equal the weight of the balloon: the balloon will be stable in a finite equilibrium altitude range for long periods.The disadvantage is that such balloons require much stronger materials than non-pressurized types.".
- Superpressure_balloon thumbnail NASA-NSF_super_pressure_balloon.jpg?width=300.
- Superpressure_balloon wikiPageExternalLink record_australia.php.
- Superpressure_balloon wikiPageExternalLink image_feature_1268.html.
- Superpressure_balloon wikiPageID "2086569".
- Superpressure_balloon wikiPageLength "5761".
- Superpressure_balloon wikiPageOutDegree "31".
- Superpressure_balloon wikiPageRevisionID "690210885".
- Superpressure_balloon wikiPageWikiLink Aerobot.
- Superpressure_balloon wikiPageWikiLink Aerostat.
- Superpressure_balloon wikiPageWikiLink Altitude.
- Superpressure_balloon wikiPageWikiLink Atlantic_Ocean.
- Superpressure_balloon wikiPageWikiLink Balloon_(aeronautics).
- Superpressure_balloon wikiPageWikiLink Buoyancy.
- Superpressure_balloon wikiPageWikiLink Buoyancy_compensator_(aviation).
- Superpressure_balloon wikiPageWikiLink Canary_Islands.
- Superpressure_balloon wikiPageWikiLink Category:Balloons_(aircraft).
- Superpressure_balloon wikiPageWikiLink Density_of_air.
- Superpressure_balloon wikiPageWikiLink Displacement_(fluid).
- Superpressure_balloon wikiPageWikiLink Diurnal_temperature_variation.
- Superpressure_balloon wikiPageWikiLink Experiment.
- Superpressure_balloon wikiPageWikiLink Force.
- Superpressure_balloon wikiPageWikiLink Global_horizontal_sounding_technique.
- Superpressure_balloon wikiPageWikiLink Greenhouse_effect.
- Superpressure_balloon wikiPageWikiLink Jet_stream.
- Superpressure_balloon wikiPageWikiLink Lifting_gas.
- Superpressure_balloon wikiPageWikiLink Light_Heart_(balloon).
- Superpressure_balloon wikiPageWikiLink NASA.
- Superpressure_balloon wikiPageWikiLink Near_space.
- Superpressure_balloon wikiPageWikiLink Project_Loon.
- Superpressure_balloon wikiPageWikiLink Sky_anchor.
- Superpressure_balloon wikiPageWikiLink Specific_gravity.
- Superpressure_balloon wikiPageWikiLink United_States_Army_Reserve.
- Superpressure_balloon wikiPageWikiLink Vega_program.
- Superpressure_balloon wikiPageWikiLink Venus.
- Superpressure_balloon wikiPageWikiLink Volume.
- Superpressure_balloon wikiPageWikiLink Weight.
- Superpressure_balloon wikiPageWikiLink File:NASA-NSF_super_pressure_balloon.jpg.
- Superpressure_balloon wikiPageWikiLinkText "Superpressure balloon".
- Superpressure_balloon wikiPageWikiLinkText "superpressure balloon".
- Superpressure_balloon wikiPageUsesTemplate Template:Reflist.
- Superpressure_balloon subject Category:Balloons_(aircraft).
- Superpressure_balloon hypernym Style.
- Superpressure_balloon type Aeronautic.
- Superpressure_balloon comment "A superpressure balloon is a style of aerostatic balloon where the volume of the balloon is kept relatively constant in the face of changes in the temperature of the contained lifting gas. This allows the balloon to keep a stable altitude for long periods.".
- Superpressure_balloon label "Superpressure balloon".
- Superpressure_balloon sameAs Q7644113.
- Superpressure_balloon sameAs m.06l6zq.
- Superpressure_balloon sameAs Q7644113.
- Superpressure_balloon wasDerivedFrom Superpressure_balloon?oldid=690210885.
- Superpressure_balloon depiction NASA-NSF_super_pressure_balloon.jpg.
- Superpressure_balloon isPrimaryTopicOf Superpressure_balloon.