DARPA, Boeing Spaceplane Would be New Class of Hypersonic Aircraft - Avionics

DARPA, Boeing Spaceplane Would be New Class of Hypersonic Aircraft - Avionics: What do you get when you mix a business jet with a rocket? Presumably, it would result in Phantom Express, Boeing and the U.S. Defense Advanced Research Project Agency’s (DARPA) XS-1 program aircraft-like vehicle. DARPA selected Boeing to complete advanced design work, and investment is coming from both parties.