The Mach 6 replacement to SR-71 will be a drone that also carries bombs
The SR-71 had a speed of Mach 3. This aircraft is said to be twice as fast and can carry bombs. It appears to be very stealthy in its design. The speed is the result of finally mastering hypersonic engines.
Has Lockheed Martin FINISHED building the secret hypersonic successor to the Blackbird? Skunkworks boss hints SR-72 bomber has 'already been made'
Jack O'Banion of Lockheed Martin, let slip at a conference the aircraft has already been made. The SR-72 hypersonic plane will be a strike and reconnaissance aircraft that tops Mach 6.