Airplanes and Aircraft
Helicopters

What is the maximum altitude that a helicopter can achieve?

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2009-11-19 23:10:26
2009-11-19 23:10:26

It varies with the type and design.

The answer is complicated because of the large variety of helicopters in the world.
The BELL 206 light helicopter was limited in a hover to around 8000 ft. If it tried to hover above this altitude, the tail rotor would basically stall out.

Also, a helicopter (and an airplane) flies more efficiently close to the ground, which is referred to as "ground effect". For an airplane, the height above the ground is about 1/2 the wing span for it to receive additional lift effect due to in ground effect. A helicopter would be about the same: 1/2 the rotor diameter. So, a helicopter might be able to hover 10 feet above the surface of an 8000 ft mountain.

Mount Everest
On May 14th, 2005, an Ecureuil/AStar AS 350 B3 helicopter operated by Eurocopter was reported to have landed on Mount Everest (29,035 feet). The landing is in dispute. The listed service ceiling of the rotorcraft is between 17 and 18 thousand feet, which is considerably short of the summit altitude.

An unmanned high altitude helicopter is nearing completion. TGR Helicorp in New Zeland has designed the "Alpine Wasp" specifically for rescue evolutions on Everest. The machine's diesel engine will give it an operating ceiling in excess of 30,000 feet.

The CH-47 Chinook twin rotor helicopter is used by the USAF to rescue climbers on Mount Denali (McKinley) in AK. It can reach an altitude in excess of 19000 to land at an elevation of around 18000. The biggest problem at that point is restarting the engines, so a special storage device directs pure oxygen into the engine inlet to restart.
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A baseball, cannonball, or other projectile launched at a 45° angle above the horizon will achieve maximum horizontal range. A projectile launched straight up will achieve maximum altitude, but you kind of have to watch it and be careful when it returns.

A helicopter cannot reach a plane's altitude because it does not have much lift. No, the air is to thin high up for a helicopter to sustain flight.

The maximum altitude of Romania is Moldoveanu peak (2544 meters altitude).

After the maximum altitude is reached the preesure is so much that the pilot cant go farther. If he goes more than the maximum altitude he will lose consiousness.

That depends on type of helicopter

there can be any number of reasons for that.

A helicopter needs a solid surface to fly over.

Because as you increase altitude, the density of air decreases. To compensate for the decreased air density the rotor blades need a greater angle of attack, pushing the retreating blade closer to stall(reducing the maximum airspeed)

To compensate for the decreased air density the rotor blades need a greater angle of attack, pushing the retreating blade closer to stall(reducing the maximum airspeed)

She hit an altitude record for an autogiro, a forerunner of a helicopter- at l8,4l5 feet, this was computed from theodolite observations from the ground.

Their maximum speed is listed as 315 km/h.

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35,000ft (A380-800, initial cruise altitude). The service ceiling (maximum altitude) of this aircraft is 43,000 ft.

Helicopters fly somewhat close to the ground. They fly near the troposphere. They fly at a lower altitude than planes.

I've never heard that. However, helicopters are limited to the altitude that they can hover, which would limit a Rescue helicopter from picking up a stranded mountain climber. In the high altitude, the air is "thinner" which means the air pressure is less. This limits the effiency of the rotor blades. However, usually the first indication of a problem is when a helicopter tries to hover at high altitude and the tail rotor looses it thurst and the helicopter goes into an uncontrolled spin. This was common with the Bell Model 206B. Even though a helicopter may be limited to the altitude at which it can hover, that does not mean it can't fly at that altitude. If a helicopter maintains a high forward air speed, it can still fly over mountains; its only when it stops and hovers that it may have problems.

I am not sure what you mean; "altitude" is not something commonly associated with black holes.

try this he highest altitude in Ukraine is mountain Goverla (2061 meters) in the Carpathians. The maximum altitude at the Crimean's is the Roman-kosh (1545 meters). I

The A380 has a service maximum of 43,000 ft.

There are two types of maximum altitude. The first is set by the FAA and is known as Service Ceiling and the second is the maximum altitude, above sea level, at which an aircraft can maintain horizontal flight under standard atmospheric conditions. This is called Absolute Ceiling. Absolute ceiling is also affected by another factor: weight.

Depends on the helicopter. The late model Chinooks can carry over 50 passengers (not 50 combat troops )

We will soon achieve maximum velocity.

The service ceiling of a Boeing 747 is 43,000 ft. The maximum is 45,000 ft.

Service Ceiling: 43,100ft (13,140m)


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