REUTERS/David Swanson
- The B-21 bomber pairs cutting edge tech with a throwback aircraft design.
- It is based on a visionary aircraft design that dates back to World War II.
- That aircraft, the YB-49, minimized drag but proved too hard to fly with 1940s technology.
Described by Northrop Grumman as a sixth-generation bomber, the US Air Force's new B-21 Raider pairs the most modern stealth and targeting technology with what is actually a throwback-style design.