The Boeing X-48 is an experimental unmanned aerial vehicle (UAV) for investigation into the characteristics of blended wing body (BWB) aircraft, a type of flying wing. Boeing designed the X-48 and two examples were built by Cranfield Aerospace in the UK. Boeing has been using the X-48 in flight testing for NASA since 2007.
Read more about Boeing X-48: Operational History, Variants, Specifications (X-48B)