Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/North_American_XB-70_Valkyrie> ?p ?o }
- North_American_XB-70_Valkyrie abstract "The North American Aviation XB-70 Valkyrie is the prototype of the B-70 nuclear-armed, deep-penetration strategic bomber for the U.S. Air Force's Strategic Air Command. North American Aviation designed the Valkyrie bomber as a large, six-engined aircraft capable of reaching Mach 3+ while flying at 70,000 feet (21,000 m).At these speeds, it was expected that the B-70 would be almost immune to interceptor aircraft, the only effective weapon against bomber aircraft at the time. The bomber would spend only a few minutes over a particular radar station, flying out of its range before the controllers could vector their fighters into a suitable location for an interception. Its high speed also made the aircraft difficult to see on the radar displays, and its high altitude flight could not be matched by any contemporary Soviet fighter.The introduction of the first Soviet surface-to-air missiles in the late 1950s put the B-70's near-invulnerability in doubt. In response, the US Air Force began flying its missions at low level, where the missile radar's line of sight was limited by local terrain. In this role, known as penetration, the B-70 offered little more performance over the B-52 it was meant to replace. It was, however, far more expensive and had shorter range. A number of alternate missions were proposed, but these were of limited scope. As the strategic role passed from bombers to intercontinental ballistic missiles (ICBMs) during the late 1950s, manned bombers were increasingly seen as an anachronism.The USAF eventually gave up fighting for its production, and the B-70 program was canceled in 1961. Development was then turned over to a research program to study the effects of long-duration high-speed flight. As such, two prototype aircraft were built, and designated XB-70A; these aircraft were used for supersonic test-flights during 1964–69. In 1966, one prototype crashed after colliding in mid-air with a smaller jet aircraft; the remaining Valkyrie bomber is in the National Museum of the United States Air Force, in Ohio.".
- North_American_XB-70_Valkyrie manufacturer North_American_Aviation.
- North_American_XB-70_Valkyrie numberBuilt "2".
- North_American_XB-70_Valkyrie programCost "1.5E9".
- North_American_XB-70_Valkyrie retired "1969-02-04".
- North_American_XB-70_Valkyrie type Strategic_bomber.
- North_American_XB-70_Valkyrie type Supersonic_aircraft.
- North_American_XB-70_Valkyrie unitCost "7.5E8".
- North_American_XB-70_Valkyrie wikiPageExternalLink books?id=CEb1sFobGgcC&pg=PA68.
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- North_American_XB-70_Valkyrie wikiPageExternalLink sp4232-part1.pdf.
- North_American_XB-70_Valkyrie wikiPageExternalLink sp4232-part2.pdf.
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- North_American_XB-70_Valkyrie wikiPageWikiLink 1960_U-2_incident.
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- North_American_XB-70_Valkyrie wikiPageWikiLink Aerodynamics.
- North_American_XB-70_Valkyrie wikiPageWikiLink Aerospace_engineering.
- North_American_XB-70_Valkyrie wikiPageWikiLink Aerospace_engineers.
- North_American_XB-70_Valkyrie wikiPageWikiLink Afterburner.
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- North_American_XB-70_Valkyrie wikiPageWikiLink Autoignition.
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- North_American_XB-70_Valkyrie wikiPageWikiLink Barstow,_California.
- North_American_XB-70_Valkyrie wikiPageWikiLink Blip-to-scan_ratio.
- North_American_XB-70_Valkyrie wikiPageWikiLink Boeing.
- North_American_XB-70_Valkyrie wikiPageWikiLink Boeing_2707.
- North_American_XB-70_Valkyrie wikiPageWikiLink Boeing_B-47_Stratojet.
- North_American_XB-70_Valkyrie wikiPageWikiLink Boeing_B-52_Stratofortress.
- North_American_XB-70_Valkyrie wikiPageWikiLink Bombardier_(air_force).
- North_American_XB-70_Valkyrie wikiPageWikiLink Bombardier_(aircrew).
- North_American_XB-70_Valkyrie wikiPageWikiLink Boron.
- North_American_XB-70_Valkyrie wikiPageWikiLink Camber_(aerodynamics).
- North_American_XB-70_Valkyrie wikiPageWikiLink Canard_(aeronautics).
- North_American_XB-70_Valkyrie wikiPageWikiLink Carl_Vinson.
- North_American_XB-70_Valkyrie wikiPageWikiLink Category:Canard_aircraft.
- North_American_XB-70_Valkyrie wikiPageWikiLink Category:Cancelled_military_aircraft_projects_of_the_United_States.
- North_American_XB-70_Valkyrie wikiPageWikiLink Category:Delta-wing_aircraft.
- North_American_XB-70_Valkyrie wikiPageWikiLink Category:NASA_aircraft.
- North_American_XB-70_Valkyrie wikiPageWikiLink Category:North_American_Aviation_aircraft.
- North_American_XB-70_Valkyrie wikiPageWikiLink Category:Six-engined_jet_aircraft.
- North_American_XB-70_Valkyrie wikiPageWikiLink Category:United_States_bomber_aircraft_1960–1969.
- North_American_XB-70_Valkyrie wikiPageWikiLink Center_of_lift.
- North_American_XB-70_Valkyrie wikiPageWikiLink Center_of_pressure_(fluid_mechanics).
- North_American_XB-70_Valkyrie wikiPageWikiLink Chairman_of_the_Joint_Chiefs_of_Staff.
- North_American_XB-70_Valkyrie wikiPageWikiLink Chief_of_Staff_of_the_Air_Force.
- North_American_XB-70_Valkyrie wikiPageWikiLink Chief_of_Staff_of_the_United_States_Air_Force.
- North_American_XB-70_Valkyrie wikiPageWikiLink Cockpit.
- North_American_XB-70_Valkyrie wikiPageWikiLink Compression_lift.
- North_American_XB-70_Valkyrie wikiPageWikiLink Concorde.
- North_American_XB-70_Valkyrie wikiPageWikiLink Contiguous_United_States.
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- North_American_XB-70_Valkyrie wikiPageWikiLink Convair_B-58_Hustler.
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- North_American_XB-70_Valkyrie wikiPageWikiLink Dayton,_Ohio.
- North_American_XB-70_Valkyrie wikiPageWikiLink Delta_wing.
- North_American_XB-70_Valkyrie wikiPageWikiLink Diego_Garcia.
- North_American_XB-70_Valkyrie wikiPageWikiLink Directional_stability.
- North_American_XB-70_Valkyrie wikiPageWikiLink Energy_density.
- North_American_XB-70_Valkyrie wikiPageWikiLink Escape_crew_capsule.
- North_American_XB-70_Valkyrie wikiPageWikiLink Experimental_aircraft.
- North_American_XB-70_Valkyrie wikiPageWikiLink Fighter_aircraft.
- North_American_XB-70_Valkyrie wikiPageWikiLink File:North_American_XB-70A_Valkyrie_Ser._No_62-0001.jpg.
- North_American_XB-70_Valkyrie wikiPageWikiLink Fineness_ratio.
- North_American_XB-70_Valkyrie wikiPageWikiLink Francis_Gary_Powers.
- North_American_XB-70_Valkyrie wikiPageWikiLink Frederick_I._Ordway_III.
- North_American_XB-70_Valkyrie wikiPageWikiLink Gary_Powers.
- North_American_XB-70_Valkyrie wikiPageWikiLink General_Electric.
- North_American_XB-70_Valkyrie wikiPageWikiLink General_Electric_YJ93.
- North_American_XB-70_Valkyrie wikiPageWikiLink Green_Mace.
- North_American_XB-70_Valkyrie wikiPageWikiLink Harrison_Storms.
- North_American_XB-70_Valkyrie wikiPageWikiLink Heat_exchanger.
- North_American_XB-70_Valkyrie wikiPageWikiLink Honeycomb_structure.
- North_American_XB-70_Valkyrie wikiPageWikiLink House_Armed_Services_Committee.