Faster, quieter, greener: Will NASA’s campaign for X-planes pick up speed? by Alan Boyle on April 25, 2016April 25, 2016 at 6:39 pm NASA is laying out a vision of quieter supersonic jets and environmentally friendly X-planes as part of its agenda for aeronautics, the oft-neglected “A” in its acronym. X-planes – that is, experimental… Read More