The Facts on the SR-91 Aurora: Former Lockheed Martin Skunk Works director Ben Rich clarified that "Aurora" was simply a ...

Summary and Key Points: The SR-71 Blackbird, a legendary Cold War-era aircraft known for holding the world’s absolute speed record, may soon have a successor. Lockheed Martin’s SR-72, or ...

London to Sydney would take just four hours in the Skylon space plane – which could be flying by 2019. ... The Concorde, for example, flew no faster than Mach 2. According to researchers, ...

Atlanta-based startup Hermeus hopes to develop a passenger airplane capable of reaching Mach 5, or 3,000 miles per hour, but is the prospect of building a hypersonic successor to Concorde merely a ...

According to Ruble, the airplane is named Mach 5 because hypersonic vehicles travel at speeds over Mach 5, which is five times the speed of sound. On the day of the attempt, they achieved the ...

Paper airplane aside, ... “Mach 5 flies best at high relative velocity, but to achieve this condition, the aircraft must be launched in a specific manner,” said Ruble via email.

But a much lighter paper aircraft would slow to Mach 6 earlier in its descent—at altitudes of 62 miles or so, where the air is thinner. As a result, the aerodynamic heating wouldn’t be as severe.

Security classification guidance will only allow us to say the speed is greater than Mach 5.” Based on these remarks, some analysts have speculated that the SR-72 could actually double its ...

For those looking to create their own record-breaking paper plane design, the feat is not impossible, but may take some time (and skill). “Mach 5 flies best at high relative velocity, but to ...