Grounding could jeopardize export orders

The laws of atmospheric physics dictate that no matter how a supersonic vehicle is shaped or propelled it will generate a sonic boom when it exceeds the speed of sound. But technology to dramatically minimize that boom has been developed and new details of two concept vehicles that could be used to prove these advances in flight test have been revealed for the first time.

Some things are not what they seem

Performing complex human tasks in stressful human environments is key to Darpa robotics

How a ‘star of the show’ turned into a lackluster performer

Without the boost of military funding, large airship builders look for commercial backing

Customer support will be crucial to the C919’s success

The coming rotorcraft non-revolution