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- High-altitude_airship abstract "The United States Department of Defense Missile Defense Agency contracted Lockheed Martin to construct a high-altitude airship (HAA) to enhance its Ballistic Missile Defense System (BMDS).An unmanned lighter-than-air vehicle, the HAA, is intended to operate above the jet stream in a quasi-geostationary position to deliver persistent station keeping as a surveillance platform, telecommunications relay, or a weather observer. They proposed to launch their HAA in 2008.The airship would be in the air for up to one month at a time and was intended to survey a 600-mile (970 km) diameter of land. It will use solar cells to provide its power and would be unmanned during its flight.It is designed to be 500 feet (150 m) long and 150 feet (46 m) in diameter. To minimize weight it is to be composed of high strength fabrics and use lightweight propulsion technologies.The HAA is intended to operate at a height of above 60,000 feet (18,000 m) and to have a payload for military use.Lockheed Martin and the U.S. Army launched the HALE-D sub-scale demonstrator on July 27, 2011, demonstrating key technologies critical to the development of unmanned airships. The airship was supposed to reach an altitude of 60,000 feet, but a problem occurred at 32,000 feet. It descended and landed without damage and no one was hurt.High altitude airships can improve the military’s ability to communicate in remote areas such as those in Afghanistan, where mountainous terrain frequently interferes with communications signals.".
- High-altitude_airship thumbnail High_Altitude_Airship.JPG?width=300.
- High-altitude_airship wikiPageExternalLink high-altitude-airships.
- High-altitude_airship wikiPageExternalLink lockheed-wins-1492m-contract-for-high-altitude-airship-updated-01607.
- High-altitude_airship wikiPageExternalLink haa.htm.
- High-altitude_airship wikiPageExternalLink index.html.
- High-altitude_airship wikiPageID "1436339".
- High-altitude_airship wikiPageRevisionID "595669043".
- High-altitude_airship hasPhotoCollection High-altitude_airship.
- High-altitude_airship subject Category:Airships.
- High-altitude_airship subject Category:Lockheed_Martin_aircraft.
- High-altitude_airship subject Category:Missile_defense.
- High-altitude_airship subject Category:Surveillance.
- High-altitude_airship type Aircraft102686568.
- High-altitude_airship type Airship102692877.
- High-altitude_airship type Airships.
- High-altitude_airship type Artifact100021939.
- High-altitude_airship type Conveyance103100490.
- High-altitude_airship type Craft103125870.
- High-altitude_airship type Instrumentality103575240.
- High-altitude_airship type Lighter-than-airCraft103666917.
- High-altitude_airship type Object100002684.
- High-altitude_airship type PhysicalEntity100001930.
- High-altitude_airship type Vehicle104524313.
- High-altitude_airship type Whole100003553.
- High-altitude_airship comment "The United States Department of Defense Missile Defense Agency contracted Lockheed Martin to construct a high-altitude airship (HAA) to enhance its Ballistic Missile Defense System (BMDS).An unmanned lighter-than-air vehicle, the HAA, is intended to operate above the jet stream in a quasi-geostationary position to deliver persistent station keeping as a surveillance platform, telecommunications relay, or a weather observer.".
- High-altitude_airship label "Dirigeable de haute altitude".
- High-altitude_airship label "High-altitude airship".
- High-altitude_airship label "高高度飛行船".
- High-altitude_airship sameAs Dirigeable_de_haute_altitude.
- High-altitude_airship sameAs 高高度飛行船.
- High-altitude_airship sameAs m.051db6.
- High-altitude_airship sameAs Q3029674.
- High-altitude_airship sameAs Q3029674.
- High-altitude_airship sameAs High-altitude_airship.
- High-altitude_airship wasDerivedFrom High-altitude_airship?oldid=595669043.
- High-altitude_airship depiction High_Altitude_Airship.JPG.
- High-altitude_airship isPrimaryTopicOf High-altitude_airship.