GIGAZINE

Helicopter "S-97 RAIDER" capable of high-speed flight with thrust of a counter-rotating rotor and propeller

It is an American helicopter manufacturing company and also manufactures military aircraftSikorsky · AircraftOf the new type helicopter "S-97 RAIDER" which the company has been developingConcept ...
The National Interest

A New “Stealth Helicopter” is On Its Way to the U.S. Army

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 ...