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- North_American_XB-21 abstract "The North American XB-21, also known by the manufacturer's model designation NA-21, and sometimes referred to by the name "Dragon", was a prototype bomber aircraft developed by North American Aviation in the late 1930s, for evaluation by the United States Army Air Corps. Evaluated against the Douglas B-18 Bolo, it was found to be considerably more expensive than the rival aircraft, and despite the ordering of a small number of evaluation aircraft, only the prototype was ever built.".
- North_American_XB-21 manufacturer North_American_Aviation.
- North_American_XB-21 numberBuilt "1".
- North_American_XB-21 unitCost "122000.0".
- North_American_XB-21 wikiPageExternalLink xb-21.htm.
- North_American_XB-21 wikiPageExternalLink rusinek_tale.pdf.
- North_American_XB-21 wikiPageID "903480".
- North_American_XB-21 wikiPageLength "9038".
- North_American_XB-21 wikiPageOutDegree "41".
- North_American_XB-21 wikiPageRevisionID "668356174".
- North_American_XB-21 wikiPageWikiLink Aerial_bomb.
- North_American_XB-21 wikiPageWikiLink Aircraft_fairing.
- North_American_XB-21 wikiPageWikiLink Bomb_bay.
- North_American_XB-21 wikiPageWikiLink Bomber.
- North_American_XB-21 wikiPageWikiLink Bomber_aircraft.
- North_American_XB-21 wikiPageWikiLink Breguet_693.
- North_American_XB-21 wikiPageWikiLink Bristol_Blenheim.
- North_American_XB-21 wikiPageWikiLink Category:Monoplanes.
- North_American_XB-21 wikiPageWikiLink Category:North_American_Aviation_aircraft.
- North_American_XB-21 wikiPageWikiLink Category:Twin-engined_tractor_aircraft.
- North_American_XB-21 wikiPageWikiLink Category:United_States_bomber_aircraft_1930–1939.
- North_American_XB-21 wikiPageWikiLink Douglas_Aircraft.
- North_American_XB-21 wikiPageWikiLink Douglas_Aircraft_Company.
- North_American_XB-21 wikiPageWikiLink Douglas_B-18_Bolo.
- North_American_XB-21 wikiPageWikiLink Fly-off.
- North_American_XB-21 wikiPageWikiLink Gun_turret.
- North_American_XB-21 wikiPageWikiLink Inglewood,_California.
- North_American_XB-21 wikiPageWikiLink List_of_bomber_aircraft.
- North_American_XB-21 wikiPageWikiLink List_of_military_aircraft_of_the_United_States.
- North_American_XB-21 wikiPageWikiLink Los_Angeles_International_Airport.
- North_American_XB-21 wikiPageWikiLink M1919_Browning_machine_gun.
- North_American_XB-21 wikiPageWikiLink Machine_gun.
- North_American_XB-21 wikiPageWikiLink Martin_146.
- North_American_XB-21 wikiPageWikiLink Martin_Model_146.
- North_American_XB-21 wikiPageWikiLink Mines_Field.
- North_American_XB-21 wikiPageWikiLink Monoplane.
- North_American_XB-21 wikiPageWikiLink North_American_Aviation.
- North_American_XB-21 wikiPageWikiLink North_American_B-25_Mitchell.
- North_American_XB-21 wikiPageWikiLink North_American_NA-40.
- North_American_XB-21 wikiPageWikiLink PZL.37_Łoś.
- North_American_XB-21 wikiPageWikiLink Pratt_&_Whitney_R-2180-A_Twin_Hornet.
- North_American_XB-21 wikiPageWikiLink Radial_engine.
- North_American_XB-21 wikiPageWikiLink Turbocharger.
- North_American_XB-21 wikiPageWikiLink Turbosupercharger.
- North_American_XB-21 wikiPageWikiLink USD.
- North_American_XB-21 wikiPageWikiLink United_States_Army_Air_Corps.
- North_American_XB-21 wikiPageWikiLink United_States_dollar.
- North_American_XB-21 wikiPageWikiLink World_War_II.
- North_American_XB-21 wikiPageWikiLink File:North_American_XB-21_6.jpg.
- North_American_XB-21 wikiPageWikiLinkText "North American XB-21".
- North_American_XB-21 wikiPageWikiLinkText "XB-21".
- North_American_XB-21 bombs "Up to in an internal bay.".
- North_American_XB-21 ceilingFt "25000".
- North_American_XB-21 combatRangeMiles "600".
- North_American_XB-21 combatRangeNote "with of bombs".
- North_American_XB-21 crew "Six to eight".
- North_American_XB-21 cruiseSpeedMph "190".
- North_American_XB-21 emptyWeightLb "19082".
- North_American_XB-21 eng1Hp "1200".
- North_American_XB-21 eng1Name Pratt_&_Whitney_R-2180-A_Twin_Hornet.
- North_American_XB-21 eng1Number "2".
- North_American_XB-21 eng1Type "turbosupercharged radial engines".
- North_American_XB-21 firstFlight "1936-12-22".
- North_American_XB-21 grossWeightLb "27253".
- North_American_XB-21 guns "Five .30-calibre machine guns, mounted in single turrets in the nose and dorsal positions, and single manually operated mounts in the waist and ventral positions.".
- North_American_XB-21 hasPhotoCollection North_American_XB-21.
- North_American_XB-21 heightFt "14".
- North_American_XB-21 heightIn "9".
- North_American_XB-21 lengthFt "61".
- North_American_XB-21 lengthIn "9".
- North_American_XB-21 lists "* List of bomber aircraft * List of military aircraft of the United States".
- North_American_XB-21 manufacturer North_American_Aviation.
- North_American_XB-21 maxSpeedMph "220".
- North_American_XB-21 maxSpeedNote "at".
- North_American_XB-21 maxTakeoffWeightLb "40000".
- North_American_XB-21 nationalOrigin "United States".
- North_American_XB-21 numberBuilt "1".
- North_American_XB-21 primaryUser United_States_Army_Air_Corps.
- North_American_XB-21 primeUnits%3F_ "imp".
- North_American_XB-21 propBladeNumber "3".
- North_American_XB-21 rangeMiles "1960".
- North_American_XB-21 rangeNote "with of bombs".
- North_American_XB-21 similarAircraft "* Breguet 693 * Bristol Blenheim * Douglas B-18 Bolo * Martin Model 146 * PZL.37 Łoś".
- North_American_XB-21 spanFt "95".
- North_American_XB-21 spanIn "0".
- North_American_XB-21 timeToAltitude "600.0".
- North_American_XB-21 type "Medium bomber".
- North_American_XB-21 unitCost "$122,000 USD".
- North_American_XB-21 wikiPageUsesTemplate Template:ASIN.
- North_American_XB-21 wikiPageUsesTemplate Template:Aircontent.
- North_American_XB-21 wikiPageUsesTemplate Template:Aircraft_specs.
- North_American_XB-21 wikiPageUsesTemplate Template:Commons_category.
- North_American_XB-21 wikiPageUsesTemplate Template:Convert.
- North_American_XB-21 wikiPageUsesTemplate Template:Good_article.
- North_American_XB-21 wikiPageUsesTemplate Template:Infobox_Aircraft_Type.
- North_American_XB-21 wikiPageUsesTemplate Template:North_American_Aviation_aircraft.
- North_American_XB-21 wikiPageUsesTemplate Template:Portal.
- North_American_XB-21 wikiPageUsesTemplate Template:Refbegin.
- North_American_XB-21 wikiPageUsesTemplate Template:Refend.
- North_American_XB-21 wikiPageUsesTemplate Template:Reflist.