The World's Largest Aircraft Completes Fourth Flight Test

Stratolaunch's "Roc" carrier aircraft recently completed its fourth test flight.Roc is currently the largest aircraft in the world with a wingspan of 385 feet (117 meters), more than triple that of the commercial-industry-standard Boeing 737. The carrier's purpose is to serve as a launchpad for its upcoming hypersonic testbed vehicle, Talon-A, an autonomous, rocket-powered, and reusable craft capable of carrying payloads at speeds of above Mach 5 (over 3,000 mph and five times the speed of sound...