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El North American XB-21 fue un prototipo de bombardero evaluado por el Cuerpo Aéreo del Ejército de los Estados Unidos en 1937, pero nunca producido en serie. A veces es referido con el sobrenombre Dragon.
, Το North American XB-21 (εσωτερική ονομασί … Το North American XB-21 (εσωτερική ονομασία NA-21) ήταν δικινητήριο μέσο βομβαρδιστικό το οποίο ανέπτυξε η στα τέλη της δεκαετίας του 1930. Συμμετείχε σε διαγωνισμό του USAAC, στον οποίο επελέγη το ανταγωνιστικό διότι ήταν σημαντικά φθηνότερο. Κατασκευάστηκε μονάχα ένα XB-21.θηνότερο. Κατασκευάστηκε μονάχα ένα XB-21.
, Le North American XB-21, également connu p … Le North American XB-21, également connu par sa désignation constructeur NA-21, et quelquefois appelé « Dragon », est un prototype de bombardier développé par North American Aviation à la fin des années 1930, pour une expertise par l'United States Army Air Corps. Évalué par rapport au Douglas B-18 Bolo, il se trouve être beaucoup plus cher que l'avion rival, et malgré la commande de quelques appareils d'évaluation, seul un prototype est construit.aluation, seul un prototype est construit.
, The North American XB-21 (manufacturer's m … The North American XB-21 (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.rcraft, only the prototype was ever built.
, ノース・アメリカン B-21は、アメリカ陸軍航空隊向けにノース・アメリカン社が試作した爆撃機。1936年に初飛行したが、採用・量産には至らなかった。ノース･アメリカン社の社内コードはNA-21。非公式の愛称は「ドラゴン(Dragon)」。
, Die North American Aviation XB-21 Dragon (Model NA-21) war ein Bombenflugzeug des US-amerikanischen Herstellers North American Aviation, Inc aus den 1930er Jahren, von dem nur ein Exemplar hergestellt wurde.
, O North American XB-21 foi um protótipo de … O North American XB-21 foi um protótipo de bombardeiro testado em 1937 pelo Corpo Aéreo do Exército dos Estados Unidos. O primeiro protótipo voou em 22 de dezembro de 1936, tendo sido inicialmente aprovado pelo Corpo Aéreo do Exército americano que encomendou inicialmente mais 5 aeronaves para pré produção (YF-21). Entretanto a encomenda foi cancelada quando o exército americano descobriu que o preço do Douglas B-18 Bolo (US$ 63,977) , uma aeronave concorrente, era mais vantajoso comparado com o custo de um North American XB-21 (US$122,600). Com isso o projeto do XB-21 foi cancelado.Com isso o projeto do XB-21 foi cancelado.
, Il North American XB-21, conosciuto anche … Il North American XB-21, conosciuto anche con la designazione del costruttore NA-21, e raramente chiamato anche Dragon (dragone), fu un prototipo di aereo da bombardamento statunitense sviluppato dalla North American Aviation verso la fine degli anni trenta per essere valutato dalla United States Army Air Corps (il corpo che diverrà l'Aeronautica degli Stati Uniti). Il rivale nel confronto fu il Douglas B-18 Bolo, che risultò essere considerevolmente meno costoso e, malgrado l'ordinativo di una piccola quantità di apparecchi per valutazioni approfondite, l'XB-21 fu costruito in un unico esemplare.'XB-21 fu costruito in un unico esemplare.
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Up to in an internal bay.
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25000
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600
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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.
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* List of military aircraft of the United States
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1960
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| rdfs:comment |
Le North American XB-21, également connu p … Le North American XB-21, également connu par sa désignation constructeur NA-21, et quelquefois appelé « Dragon », est un prototype de bombardier développé par North American Aviation à la fin des années 1930, pour une expertise par l'United States Army Air Corps. Évalué par rapport au Douglas B-18 Bolo, il se trouve être beaucoup plus cher que l'avion rival, et malgré la commande de quelques appareils d'évaluation, seul un prototype est construit.aluation, seul un prototype est construit.
, Il North American XB-21, conosciuto anche … Il North American XB-21, conosciuto anche con la designazione del costruttore NA-21, e raramente chiamato anche Dragon (dragone), fu un prototipo di aereo da bombardamento statunitense sviluppato dalla North American Aviation verso la fine degli anni trenta per essere valutato dalla United States Army Air Corps (il corpo che diverrà l'Aeronautica degli Stati Uniti). Il rivale nel confronto fu il Douglas B-18 Bolo, che risultò essere considerevolmente meno costoso e, malgrado l'ordinativo di una piccola quantità di apparecchi per valutazioni approfondite, l'XB-21 fu costruito in un unico esemplare.'XB-21 fu costruito in un unico esemplare.
, ノース・アメリカン B-21は、アメリカ陸軍航空隊向けにノース・アメリカン社が試作した爆撃機。1936年に初飛行したが、採用・量産には至らなかった。ノース･アメリカン社の社内コードはNA-21。非公式の愛称は「ドラゴン(Dragon)」。
, Το North American XB-21 (εσωτερική ονομασί … Το North American XB-21 (εσωτερική ονομασία NA-21) ήταν δικινητήριο μέσο βομβαρδιστικό το οποίο ανέπτυξε η στα τέλη της δεκαετίας του 1930. Συμμετείχε σε διαγωνισμό του USAAC, στον οποίο επελέγη το ανταγωνιστικό διότι ήταν σημαντικά φθηνότερο. Κατασκευάστηκε μονάχα ένα XB-21.θηνότερο. Κατασκευάστηκε μονάχα ένα XB-21.
, O North American XB-21 foi um protótipo de … O North American XB-21 foi um protótipo de bombardeiro testado em 1937 pelo Corpo Aéreo do Exército dos Estados Unidos. O primeiro protótipo voou em 22 de dezembro de 1936, tendo sido inicialmente aprovado pelo Corpo Aéreo do Exército americano que encomendou inicialmente mais 5 aeronaves para pré produção (YF-21). Entretanto a encomenda foi cancelada quando o exército americano descobriu que o preço do Douglas B-18 Bolo (US$ 63,977) , uma aeronave concorrente, era mais vantajoso comparado com o custo de um North American XB-21 (US$122,600). Com isso o projeto do XB-21 foi cancelado.Com isso o projeto do XB-21 foi cancelado.
, El North American XB-21 fue un prototipo de bombardero evaluado por el Cuerpo Aéreo del Ejército de los Estados Unidos en 1937, pero nunca producido en serie. A veces es referido con el sobrenombre Dragon.
, The North American XB-21 (manufacturer's m … The North American XB-21 (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.rcraft, only the prototype was ever built.
, Die North American Aviation XB-21 Dragon (Model NA-21) war ein Bombenflugzeug des US-amerikanischen Herstellers North American Aviation, Inc aus den 1930er Jahren, von dem nur ein Exemplar hergestellt wurde.
|
| rdfs:label |
North American XB-21
, XB-21 (航空機)
|
