Why does it take soo long for Commercial Airlines to reach there maximum hight level after they take off?

Answer 1

First off yes planes can climb fast. But this would cause the pilots to use alot more fuel since the more you climb the more power you need to give to the engines and the more fuel you waste. Take off and climb use alot of fuel, also you don't want to run the engines on such high power for such a long time. Also the higher a plane gets the harder it is to gain altitude because the air is thinner the higher you go. So as the plane climbs more and more the rate of climb is less and less. A plane could not just climb at 6,000ft per minute the whole way up to 36,000ft what would happen is the engines would be overheated and over stressed, alot more fuel would be burned and the plane would stall as 6,000feet per minute is not a climb rate that can be ac hived at 35,000ft.
On long haul flights like LA-Sydney the plane first cruises at 29,000ft than climbs to 34,000 than 38,000ft than 41,000ft this is because at first the plane is very heavy with alot of fuel and it is to heavy to reach the higher altitudes. So as the flight goes on the plane losses weight from the fuel but than starts getting a more economical fuel burn because of the decreased weight and higher altitude.
Its a simple matter of physics to know why planes can just shoot up to there cruise altitude.

Answer 2

it takes them so long to reach their maximum height level because they are moving in a slant position. so they need time to reach the maximum height and not causing any uneasy feelings on the passenger. try riding a roller coaster and see the difference between the two. ofcourse it will be exciting if a commercial plane can rise and dive instantly. but it will surely kill those passengers who have a heart complication.

Answer 3

It's for the comfort of the passengers, smooth and gradual ascent and descent. Also, there is a lot of congestion for arriving and departing flights so air traffic controllers space out the altitudes to avoid collisions. Military flights don't face these strictures...or Russians either!

Answer 4

I'd guess that they probably could reach it sooner, but would have to do so at such a sharp climb angle that it would make passengers uncomfortable, disturb the work of the flight attendants, and possibly cause baggage (both in hold and in overhead) to shift.