TIANJIN, China — Avicopter is developing a technology demonstrator for a high-speed helicopter, adopting a compound configuration that combines coaxial rigid rotors and nose-mounted counter-rotating ...

Here’s What You Need to Remember: While rotor blades are, quite naturally, likely to generate some kind of radar signal to enemy systems, depending upon range and the fidelity of a given air defense ...

Here’s What You Need To Remember: The new aircraft will employ several measures designed to make it quieter, including, most notably, a counter-rotating rotor that muffles the sound of the first. The ...

Airbus Helicopters appears to be working on a new automated safety system for its high-speed Racer compound rotorcraft that would use its twin propellers to provide power to the main rotor in the case ...