Carrier Aircraft Fourth Test Flight Completed by Stratolaunch

A fourth test flight has been completed by the Stratolaunch carrier aircraft, known as "Roc". Roc is the world's largest aircraft, with a 385 ft. wingspan. The aircraft flew for 1 hour, 43 minutes over the Mojave Desert and reached an altitude of 15,000 feet. As part of this latest flight, pilots further prepared the carrier aircraft to support launches…