Видео с ютуба Berp Blades

BlueEdge® blades

Learn about BERP rotor blades.

Main rotor blade tracking on the bell212 helicopter

SABRE (Shape Adaptive Blades for Rotorcraft Efficiency): a project to reduce helicopter emissions

BERP Rotor

Westland Multi-Role Lynx

Stripped for Speed: Inside a Record-Breaking Helicopter | G-lynx

The Iconic "Burp Gun" - Shooting the PPSh-41