Why Helicopters Can’t Fly to Everest

Climbers get stranded on mountains with frightening regularity lately. Their way down may be blocked by avalanches, landslides, or other damage to the route. So, if people can’t escape from mountain tops on foot, why not rescue them with the help of helicopters? After all, these machines can land anywhere, right?

It turns out that there’s a serious reason why choppers don’t fly all the way to the top of high mountains like Everest. Of course, there are special helicopters that can fly way higher than regular ones. They not only have larger blades and extremely powerful engines but they also cost a fortune as you may guess. So what about ordinary helicopters?

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TIMESTAMPS:
How these machines work ? 0:38
The helicopter that did make it to the peak of Everest 2:25
Why do some helicopters have wheels? 3:28
Why do they need two rotors? 4:50
Could helicopters fly in the rain? ☔️ 5:56
How about flying at night? 6:33
Could they fly upside down? ? 7:00

#helicopter #aviation #brightside

SUMMARY:
– While aircraft generate lift with the help of their wings, helicopters need rotors (aka blades) to perform this impressive feat.
– The lift produced by the rotors greatly depends on the density of the air. The higher this density is, the more comfortably and safely a helicopter can fly.
– And you should also keep in mind that a chopper needs to support not only its own substantial weight, but also the weight of its crew, passengers, and cargo.
– Pilots who fly high-altitude helicopters in the mountains must constantly calculate how much power they’ll need for maneuvers like hovering, taking off, and landing at this or that altitude.
– Almost all early choppers had wheels, just like airplanes. But since emergency landing sites were often just plowed fields, the front wheels of helicopters used to dig in, which made a forward-moving machine highly unstable during landing.
– To get a chopper into the air, the main rotor must move and push the air down, which, in turn, will push the heavy machine up.
– It means that if the chopper’s rotor moves clockwise, its fuselage would be pushed in the opposite, counter-clockwise direction.
– Rain alone does nothing to affect the ability of a chopper to rise into the air. After all, blades still rotate, and thrust still takes the machine upward. On the other hand, rain means low visibility.
– Helicopters avoid flying in the dark due to the risk of hitting something, which always ends badly, both for the machine and its crew and passengers.
– Some helicopters can indeed fly upside down, but it’s by no means an easy feat! Once again, a helicopter rises into the air thanks to the lift produced by its powerful rotors which spin at insane speeds: more than 500 revolutions per minute!

Music by Epidemic Sound https://www.epidemicsound.com/

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