Northrop YB-49 Flying wing, a heavy bomber prototype

Source: http://www.edwards.af.mil/gallery/html_pgs/bomber5.html (archived here).

Source: USAF "First Flights at Edwards Air Force Base", by History Office Air Force Flight Test Center, August 2007. http://www.af.mil/shared/media/document/AFD-080123-062.pdf archive copy at the Wayback Machine Other version: File:YB49-2 300.jpg

本图片或文件是由美国空军的军人或雇员，基于其个人公务目的拍摄或制作的作品。作为美国联邦政府的作品，本图片或文件在美国属于公有领域。 العربية ∙ беларуская (тарашкевіца) ∙ català ∙ čeština ∙ Deutsch ∙ English ∙ español ∙ eesti ∙ فارسی ∙ suomi ∙ français ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ മലയാളം ∙ မြန်မာဘာသာ ∙ norsk bokmål ∙ Plattdüütsch ∙ Nederlands ∙ polski ∙ português ∙ português do Brasil ∙ русский ∙ sicilianu ∙ slovenčina ∙ slovenščina ∙ српски / srpski ∙ svenska ∙ Türkçe ∙ українська ∙ Tiếng Việt ∙ 中文（简体） ∙ 中文（繁體） ∙ +/−

This file was reviewed on 6 September 2009 by the administrator or trusted user Sv1xv (talk), who confirmed the Public Domain status on that date.