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SR-91 Aurora aircraft design was a rumored mid-1980s American reconnaissance aircraft. It is believed that SR-91 Aurora is capable of hypersonic flight at speeds of Mach 5+.

According to the hypothesis, Aurora was developed in the 1980s or 1990s as a replacement for the aging and expensive SR-71 Blackbird.

Aurora also known as SR-91 Aurora is the popular name for a hypothesized American reconnaissance aircraft, believed by some to be capable of hypersonic flight at speeds of Mach 5+.

According to the hypothesis, Aurora was developed in the 1980s or 1990s as a replacement for the aging and expensive SR-71 Blackbird.

Here is a Documentary on SR-91 Aurora – Does it Exists?

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. In the 1994 book Skunk Works, Ben Rich, the former head of Lockheed’s Skunk Works division, wrote that the Aurora was the budgetary code name for the stealth bomber fly-off that resulted in the B-2 Spirit.

By the mid-1990s reports surfaced of sightings of unidentified aircraft flying over California and the United Kingdom involving odd-shaped contrails, sonic booms, and related phenomena that suggested the US had developed