0
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.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
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 effect does cold air have on air pressure?
Cold air increases air pressure
How do you use air pressure and air mass in a sentence?
The air pressure and the air mass at the mountains was very high. It is an example sentence for air pressure and air mass.
Why cant you just use pressurized air for water bottle rockets?
air doesn't have enough mass. water is needed for it's mass. a plastic drink bottle can't hold enough air, the pressure would be to high.
What would happen to the air pressure when the air is sucked out?
The air pressure would reduce.
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.
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.
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.
