Why do helicopters have two engines?

It is generally believed that if there was engine trouble with one engine in a twin engine helicopter, the second engine is there to ensure the flight continues to go smoothly.

Are twin engine helicopters safer?

In fact, twin and single-engine helicopters offer practically the same degree of safety. Evidence shows that 95% of the causes of helicopter accidents (ground impacts, power line collisions, etc) have nothing to do with whether the aircraft was a twin or single-engine model.

How do dual engine helicopters work?

Unlike their fixed-wing brethren, most twin engine helicopters utilize two engines connected to a single transmission. When one engine fails there is little to no negative aerodynamic effect, unlike on an airplane: There is no thrust asymmetry. There is no windmilling prop adding additional drag.

Can a Chinook fly with one engine?

Chinooks are powerful enough to fly with one engine. If one engine fails, pilots are able to shut it down and activate the second engine, which is something pilots routinely train on, he said. … He lauded the pilot’s ability to turn off the engines and go into an auto-rotation to safely land the aircraft.

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