Contact ball bearing

MISTRAL Engines has developed a new liquid-cooled, multi-fuel, electronically controlled rotary engine to meet the needs of 21st century general aviation.     As a demonstration of vibration-free operation, it was convincing. Yann Olivier placed a glass of wine on the engine and opened the throttle. Up went the revolutions – 3,000, 4,000, 5,000 r/min and more. The exhaust manifold glowed first red-hot, then white. But the glass stayed firmly in place; there...