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Northrop YB-49

YB-49
YB-49
Vloga Strateški bombnik
Proizvajalec/-ci Northrop Corporation
Oblikovalec Jack Northrop
Krstni polet 21. oktober 1947
Status Samo prototipi
Glavni uporabnik USAF
Število izdelanih 3 predelani iz YB-35
dva YB-49
en YRB-49A
Razvit iz Northrop YB-35

Northrop YB-49 je bil prototip osemmotornega reaktivnega strateškega bombnika. Razvilo ga je podjetje Northrop Corporation kmalu po koncu 2. svetovne vojne. YB-49 je uporabljal tehnologijo letečega krila. Imel je reaktivni pogon, za razliko od propelerskih predhodnikov XB-35 in YB-35. Dva YB-49 sta bile predelana iz YB-35.

YB-49 ni vstopil v serijsko proizvodnjo, namesto njega so naročili propelerske Convair B-36. Je pa YB-49 zelo vplival na razvoj kasnejših letal kot npr. stealth bombnik B-2 Spirit

Tehnične specifikacije (YB-49)

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Prvi let YB-49
Delno dokončani YB-35B

Podatki iz National Museum of the United States Air Force

Splošne karakteristike

  • Posadka: 7
  • Dolžina: 53 ft 1 in (16,0 m)
  • Razpon kril: 172 ft 0 in (52,4 m)
  • Višina: 20 ft 3 in (6,2 m)
  • Površina kril: 4000 ft² (371.6 m²)
  • Aeroprofil: NACA 65-019 koren, NACA 65-018 konec
  • Teža praznega letala: 88442 lb (40116 kg)
  • Naložena teža: 133559 lb (60581 kg)
  • Maks. vzletna teža: 193938 lb (87969 kg)
  • Pogon letala: 8 (6 J35-A-19 na YRB-49A) × Allison/General Electric J35-A-5 turboreaktivni motor, 4000 (5000 za J35-A-19) lbf (17 kN) vsak

Zmogljivost

  • Maks. hitrost: 495 mph (793 km/h)
  • Doseg: 9978 mi (16057 km) največji dolet
  • Bojni radij: 1615 mi (2599 km)
  • Višina leta: 45700 ft (13900 m)
  • Hitrost vzpenjanja: 3758 ft/min (19,1 m/s)
  • Obremenitev kril: 33 lb/ft² (163 kg/m²)
  • Razmerje potisk/teža: 0,23

Oborožitev

  • Strelno orožje: 4 × .50 in (12.7 mm) stronice
  • Bombe: 32000 lb (14500 kg)

Glej tudi

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Sklici in reference

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Bibliografija

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  • Coleman, Ted. Jack Northrop and the Flying Wing: The Real Story Behind the Stealth Bomber. New York: Paragon House, 1988. ISBN 1-55778-079-X.
  • Donald, David, ur. (1997). Northrop Flying Wings. The Encyclopedia of World Aircraft. Etobicoke, Ontario: Prospero Books. ISBN 1-85605-375-X.
  • Fitzsimons, Bernard, ed. "Scorpion, Northrop F-89." Illustrated Encyclopedia of 20th Century Weapons and Warfare, Volume 21. London: Phoebus, 1978. ISBN 0-8393-6175-0.
  • Maloney, Edward T. Northrop Flying Wings. Corona del Mar, California: World War II Publications, 1988. ISBN 0-915464-00-4.
  • O'Leary, Michael. "Wings of Northrop, Conclusion". Air Classics, Volume 44, Number 3, March 2008, Challenge Publications, Inc. ISSN 0002-2241. (Heavily illustrated, authoritative YB-49 article)
  • Pape, Garry and John Campbell. Northrop Flying Wings: A History of Jack Northrop's Visionary Aircraft. Atglen, Pennsylvania: Schiffer Publishing, Ltd., 1995. ISBN 0-88740-689-0.
  • Pattillo, Donald M. "Pushing the Envelope: The American Aircraft Industry". Ann Arbor, Michigan: University of Michigan Press, 2001. ISBN 0-472-08671-5.
  • Winchester, Jim (2005). "Northrop XB-35/YB-49." Concept Aircraft: Prototypes, X-Planes and Experimental Aircraft. Kent, UK: Grange Books plc. ISBN 978-1-84013-809-2.
  • Withington, Thomas and Chris Davey. B-2A Spirit Units in Combat. Arhivirano 2014-10-08 na Wayback Machine. Oxford, UK: Osprey Publishing, 2006. ISBN 1-84176-993-2.
  • Wooldridge, E. T. Winged Wonders: The Story of the Flying Wings. Washington, D.C.: Smithsonian Institution Press, 1983. ISBN 0-87474-966-2.

Zunanje povezave

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Northrop YB-49
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