June 7, 2018 KC-46 Pegasus returns to Edwards for flight tests A KC-46A Pegasus aerial refueling aircraft touched down at Edwards May 23 for flight tests. The plan is to have the Pegasus at Edwards Air Force Base through June as Boeing and the 418th Flight Test Squadron conduct tests with the new tanker. While the KC-46's role is to refuel other aircraft,
June 7, 2018 This week in Edwards history On June 6, 1959, the first ground test of Thiokol’s XLR-99 liquid fueled rocket engine for the X-15 took place at the Static Test Stand. Delivering 50,000 lbs of thrust at ground level, it was the most powerful and complex throttleable rocket propulsion system in the world.