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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 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 wikiPageRevisionID "559520735".
- 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 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".
- 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 "One".
- 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 wingAreaSqft "1120".
- North_American_XB-21 subject Category:Monoplanes.
- North_American_XB-21 subject Category:North_American_Aviation_aircraft.
- North_American_XB-21 subject Category:Twin-engined_tractor_aircraft.
- North_American_XB-21 subject Category:United_States_bomber_aircraft_1930–1939.
- North_American_XB-21 type Aircraft.
- North_American_XB-21 type MeanOfTransportation.
- North_American_XB-21 type Product.
- North_American_XB-21 type Model_airplane.
- North_American_XB-21 type TransportationDevice_Vehicle.
- North_American_XB-21 type DesignedArtifact.
- North_American_XB-21 comment "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 label "North American XB-21".
- North_American_XB-21 label "North American XB-21".
- North_American_XB-21 label "North American XB-21".
- North_American_XB-21 label "North American XB-21".
- North_American_XB-21 label "North American XB-21".
- North_American_XB-21 label "North American XB-21".
- North_American_XB-21 label "XB-21 (航空機)".
- North_American_XB-21 sameAs North_American_XB-21.
- North_American_XB-21 sameAs North_American_XB-21.
- North_American_XB-21 sameAs North_American_XB-21.
- North_American_XB-21 sameAs North_American_XB-21.
- North_American_XB-21 sameAs XB-21_(航空機).
- North_American_XB-21 sameAs North_American_XB-21.
- North_American_XB-21 sameAs m.03nfx3.
- North_American_XB-21 sameAs Q2711415.
- North_American_XB-21 sameAs Q2711415.
- North_American_XB-21 wasDerivedFrom North_American_XB-21?oldid=559520735.
- North_American_XB-21 isPrimaryTopicOf North_American_XB-21.