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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.
What else can I help you with?
What is the relationship between altitude and air pressure to explain why rescue helicopters have a difficult time flying at altitude over 6000m.?
The higher you are from the Earth's surface - the lower the air pressure is. Helicopters are heavy machines - requiring a huge amount of effort from the rotor blades to keep it airborn. The lower the air-pressure, the harder the rotors have to work to keep the craft flying.
How do helicopters show thrust?
Helicopters are notorious for showing downward thrust, prior to lifting off the ground, in a cloud of dust, flattened grass, or in people clutching their hats as they go to or from the helicopter.
Is it possible to float in the air?
No, it is not possible for humans to float in the air without the assistance of external devices or equipment such as balloons, airplanes, or helicopters.
How does air pressure move air particles?
Air pressure is the force exerted by the weight of air in the atmosphere. Differences in air pressure cause air particles to move from areas of high pressure to areas of low pressure, in an attempt to equalize the pressure. This movement of air particles creates wind.
What effect does cold air have on air pressure?
Cold air is denser than warm air, so it exerts a higher pressure. When cold air moves into an area, it can increase the air pressure in that location. Conversely, when warm air moves into an area, it can decrease the air pressure.
What is the relationship between altitude and air pressure to explain why rescue helicopters have a difficult time flying at altitude over 6000m.?
The higher you are from the Earth's surface - the lower the air pressure is. Helicopters are heavy machines - requiring a huge amount of effort from the rotor blades to keep it airborn. The lower the air-pressure, the harder the rotors have to work to keep the craft flying.
What is the relationship between altitude and air pressure to explain why rescue helicopters have a difficult time flying altitude above 6000 m?
An inverse relationship.
Are Helicopters important?
Yes, and not only as military equipment.- if it wasnt for helicopters, hundreds of thousands of people would not be alive today with things such as - Search and rescue helicopters Firefighting helicopters Air ambulances (medEvac) Coast guard helicopters the reality is that helicopters are vital in our modern world
Why cant helicopters fly high?
Because the air gets too thin.
Why do rescue helicopters have a difficult time flying at altitudes above 6000 meters?
Because the air is thinner there
Do UK air ambulance helicopters have a winch?
No, not normally. If a winch is required then the search and rescue service from the RAF are called in.
What are helicopters used for?
Oil rig work, firefighting, military work, rescue tasks.
Why cant you feel air pressure?
isk
A flight can stay air with out moving?
No... a flight cant stay in air without moving..even for a second....but some of the fighters and helicopters can stay in air for minutes or hours..
Can a plane stand in air?
Helicopters and some STOL aircraft can stand still in the air. If an actual winged aircraft does this it will 'stall' because air pressure is not moving over the wings.
Why does a rescue helicopter have a difficult time flying at altitudes over 6000 meter?
Helicopters in general do not do well at high altitudes. This is because of the lower air density at higher altitudes. Jet airplanes can fly at these heights only because they are going very fast. Helicopters are designed specifically for slow (or hovering) flight, and so have difficulty at high altitudes. On first examination, one would think that you could overcome this problem by simply designing a helicopter with a faster-spinning rotor, but as helicopter rotors get to a certain speed, their lifting capability becomes spoiled by their own wake and things tend to get unstable. Many helicopters overcome the altitude limitations by simply having a larger diameter rotor to produce more lift from the thinning air, however the larger size also limits the helicopters usability as a rescue platform. Additionally, rescue helicopters are usually equipped with a large amount of heavy medical equipment which further reduces their performance, helicopters which are specifically used for mountain rescue will be much lighter equipped. However it is often the case that an air-ambulance or other rescue helicopter has been co-opted into a mountain search and rescue and may find themselves overequipped/overweight for the job.
Can a plane stand still in air?
Helicopters and some STOL aircraft can stand still in the air. If an actual winged aircraft does this it will 'stall' because air pressure is not moving over the wings.
