why jet aeroplanes fly in the lower part of the stratosphere?

Question

why jet aeroplanes fly in the lower part of the stratosphere

Answer 1

Based on temperature the atmosphere can be divided into 4 main regions.. troposphere, stratosphere, mesosphere, thermosphere.

From the surface upto an altitude of abt 10-16 Km, the temperature decreases with increase in altitude. This is because here the atmosphere is almost transparent to the sun's energy & is instead heated from below, by the earth's surface. This region is the troposphere.

Above this lies the stratosphere, where the temperature increases with increase in altitude. It extends to an altitude of about 50Km. Airflow in the stratosphere is much less turbulent than in the troposphere. Here the air doesn’t flow up and down, but flows parallel to the earth in very fast moving air streams. This is the layer where most jet planes fly.

Due to difference in their temperature gradients, the tropospheric air does not mix into the stratospheric air. The lack of mixing & less turbulence makes the stratosphere more layered or 'statified'.

Answer 2

Jet Aeroplanes

Answer 3

Since the max altitude for a Commercial jet is about 60,000 feet you will need rocket boosters. Since the Shuttle can fit on the back of a boeing 747 I'll estimate you will need between 1-2 shuttles worth of boosters to get into space. Now once there unless your plane has been modified for space flight you won't have thrusters so you can't maneuver so the only way you would be able to get back to earth is for the earth's gravity slow and pull you down. Then Finlay you would burn up on reentry.

Answer 4

It's mostly a question of economy. It costs fuel to climb very high and there is no reason to. If you go too high, the atmosphere thins so much that engine efficiency goes down. At the 40,000 feet level and below, aircraft can also take advantage of the prevailing jet stream flows and engine efficiency has been perfected over the years. Planes can fly long distances without refueling as long as they stay subsonic. The only incentive to fly at a very high altitude is if one is attempting to travel many times the speed of sound. There is less heating, less drag, less flying time but of course with today's technologies, it costs too much fuel.

Answer 5

Airplanes fly at different altitudes for different reasons. The most common is weather. At high altitudes very little weather to interfere with the flight. Flight time sometimes tells where to fly. A one hour flight from Boston to Philly, if flight altitude is real high, it is takeoff, level flight have a snack, descent for landing. Kind of makes the trip seem short. Flight would seem longer at lower altitudes if you are following the actions of plane and crew.

Answer 6

They would fly higher for better fuel efficiency but as they go higher the stall speed of the wing approaches the speed of sound and and could stall so unless you are an sst you must stay under 50,000 feet.

Answer 7

They get into a jet stream,like 300 mph to maximize efficiency.

Answer 8

Because to avoid atmospheric turbulence caused by the convection in the the lower troposphere.

Answer 9

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Answer 10

The thinner atmosphere there makes for less resistance.