Why doesn’t the United States operate a stealth helicopter? It’s not for lack of trying. In the world of aerospace, stealth technology has become something of a prerequisite for new designs ...

Instead, it served as a proof-of-concept that influenced ... Its groundbreaking stealth features contributed to the development of modern aircraft like the F-35 Lightning II.

it may have been enough to push this aircraft concept off of Lockheed’s notebook pages and into their production facilities. But it wasn’t just stealth the X-44 did better. It also carried a ...