Turbojet Runs Precursor to Hypersonic Engine Heat Exchanger Tests

Advanced propulsion developer Reaction Engines is nearing its first step toward validating its novel air-breathing hybrid rocket design at hypersonic conditions by firing up a vintage General Electric J79 turbojet to act as a heat source for testing, expected later this month.


Why You Can't Just Buy a Drone and Take to the Skies We know them as drones.

The authorities like to call them by their proper name: Unmanned Aircraft Systems or UAS. Flying civilian drones has really taken off in recent times-pun intended.

The technology and growing availability of drones caught US authorities off guard. Until recently, they had no idea how to manage them. All they knew was that drone flying could not go on unregulated.