SR-91 Aurora

Aurora was a rumored mid-1980s American reconnaissance aircraft. There is no substantial evidence that it was ever built or flown and it has been termed a myth. The U.S. government has consistently denied such an aircraft was ever built. The Aurora legend started in March 1990, when Aviation Week & Space Technology magazine broke the news that the term "Aurora" had been inadvertently included in the 1985 U.S. budget, as an allocation of $455 million for "black aircraft production" in FY 1987.According to Aviation Week, Project Aurora referred to a group of exotic aircraft, and not to one particular airframe. Funding of the project allegedly reached $2.3 billion in fiscal 1987, according to a 1986 procurement document obtained by Aviation Week.