How Jet Aeroplane crusing above 33,000 ft nullify its weight?

Question

How Jet Aeroplane crusing above 33,000 ft nullify its weight?

Answer 1

Newton's third law.

wings moving forward leading edge angled up, pushes air down;  forcing air down creates equal and opposite reaction of pushing the wings up;  the right combination of thrust and angle of attack balances the pushing up forces with the pushing down force of gravity.

Answer 2

In order to produce enough lift to counter-balance the weight in air that thin, the plane has to travel *really* fast.

Answer 3

By generating sufficient lift to off set the weight of the aircraft.

Answer 4

Actually atmospheric height doesnt really matter here. Weight is countered by the lift generated and lift is primarily a function of density, relative velocity and aerofoil shape.

Density changes with altitude, so the aircraft might have to go a bit faster than at 10K feet to generate sufficient lift.

Answer 5

Your question  is awkwardly worded, but it's true that most airliners are weight-restricted for flight above FL 360. They often refuse higher altitudes until they burn off considerable fuel, or refuse them altogether, depending on SAT and weight. Biz jets can typically go to FL 390 or 410 unrestricted and many can step climb above that. A few can climb directly to FL 450 or even  higher. (Have flown all of the above, except the airliners.)

Answer 6

At all altitudes, aircraft use their wings to generate an aerodynamic lifting force that counteracts the weight of the aircraft, holding them at a constant altitude in the air.

The principle works in the same way even at 33,000 feet. Air density diminishes with altitude, but aircraft fly very fast at high altitudes, and thus still generate more than enough lift to stay in the air.  In fact, altitudes between roughly 30,000 and 40,000 feet are optimal for many airliners, because the thinner air presents less drag, thus allowing the airplane to fly faster with less fuel consumption.  An airplane at 33,000 feet has to fly faster than one at 10,000 feet in order to stay aloft, but speed is the whole idea in air travel, so that works out just fine.

Answer 7

The weight doesn't get nullified, it gets overcome by lift.