Dark Skies Official on MSN

The X-Wing: S-72 Jet Helicopter with Blades as Wings

The Sikorsky S-72 was more than just a visually striking aircraft. This unique and unusual vehicle could take off and land vertically like a chopper, but it could also fly fast and far like a plane.
National Security Journal on MSN

SR-72: The Air Force’s New Hypersonic Bomber?

The SR-72 “Darkstar” is envisioned as a Mach-6, air-breathing ISR platform—but could it strike? -Hypersonic speed complicates ...