
The Navy plans to conclude flight tests this spring of the X-47B unmanned plane built to demonstrate aircraft carrier operations as it moves toward a follow-on system planned to be operational in the early 2020s, senior officers said Wednesday.In written testimony to the Senate Armed Services Committee on airpower, Vice Adm. Paul Grosklags, the principal military deputy for the Navy’s top acquisition official, and Rear Adm. Michael Manazir, the director of air warfare, said the final testing will involve autonomous…