Why do Jumbo jets such as 747's, 777's and Airbus 340's need alot of room to take off from runways?

Answer 1

OOOHHHH BOOOOYYYYEEEE, it's time to go to special class!!!!

Answer 2

Actually, this answer is pretty complicated, but I'll give you the simple answer. The technology that goes into creating aircraft engines and the technology that determines the maximum structural integrity of large aircraft is the determining factor of how much runway an aircraft needs. I'll explain.

First, keep in mind, there are a lot of variables that factor into when an airplane can take off, such as thrust to weight ratio, lift creating devices such as flaps and slats, temperature, elevation, etc.

Also, realize that the best engine is the one that creates the most thrust, at the least weight of the engine, is fuel efficient at all phases of flight, and is reliable.

Finally, the answer is bigger aircraft require more runway because as they approach the threshold of structural integrity design limits and engine design limits, they normally require more runway due to the lower thrust to weight ratio of the engines versus the weight of the aircraft, and the minimum speed necessary to take off.

As our technology advances, we will be able to make stronger engines to fit on aircraft that weigh less, and are capable of taking off at lower speeds and shorter distances.
But, the larger the airplane design, the less efficient this thrust to weight ratio becomes, creating larger take off distances.

Heh, confused yet?

Depending on the weight of the airplane, a nearly empty 747 may be capable of taking off at a much shorter distance than a very heavy 737. But when fully loaded, a 747 will require around 10,000 feet, (or more) of runway.

Tough to explain in a couple paragraphs, but hopefully this helped.

Answer 3

To start off, the Jumbo Jet is a 747 the 777 and A340 are not jumbo jets.

The answer to you question, a A320 only has a MTOW(maxium takeoff weight) of 77.000kgs it can carry up to 180 passengers and are fitted with two CFM 56 engines. An A340 has a MTOW of 230.000+ kgs and can carry 300 passengers It requires longer runways to gather up speed and is fitted with four engines.

Answer 4

Ok...Jets like Boeing 747's,777's and 340's need a long runway for takeoff because of alot of things like:-

1.The weight of the plane including passengers,baggage,fuel etc.
(If the runway is short you will most likely not make it trying to takeoff)
2.The weather conditions affecting the plane.

Runway 13R-31L is the second longest commercial runway in North America, at a length of 14572 ft (4441 m), this is a good runway length for these Jumbo Jets.

Hope I've helped :)

Answer 5

bearing directly to risk-free practices, ETOPS (which stands for prolonged-variety twin-engine Operational overall performance standards). All usa registered twinjets can fly almost everywhere interior the international, different than for small pactches interior the south pacific and over Antarctica. Being a twinjet does not make the airplane any much less risk-free than a 747 or Airbus A340. If by potential of "ideal" you advise economics, the 777, if by potential of "ideal" you advise convenience, it relies upon on airline, however the A340 is quietest. the ideal of each physique of those standards is probable the Airbus A330-2 hundred or the subsequent technology of jetliners, like the Boeing 787 and Airbus A350XWB.

Answer 6

Think about the available power. Jumbo jets gain speed slower and need more room to stop. Wider wingspan mean taxiway have to be space apart more. SeaTac airport can not have A-380s taxi past each other.

Answer 7

they are all "heavy" aircraft. so the do need bigger taxi ways and longer runways since they are carrying a lot of cargo, people, fuel. also the runways need to be long if the aircraft were to abort take off, which would need more room than a 737 since like i said they are bigger, used up half the run way and are going say 150+ knots. believe me if you were on a 747,777, or a a340 you would want an long runway!!

Answer 8

It's not that complicated. Think of how much more road a semi truck needs to go from 0-60 when compared to your car. It's the same thing with large aircraft , all that mass requires time to get up to speed and that time translates out to distance.

Answer 9

I just think its cus of the weight and people onboard, bigger plane doesn't necessarily mean more runway room cus we all know the A380 is bigger than the 747 and the former can take off with less runway.

Answer 10

Actually a Fighter jet needs a lot more runway because of its smaller wings, and their need to gain greater speed to take off.

Answer 11

Maybe because they have like 500 people on board which weighs an awful lot, plus the forty or fifty pounds of luggae each passenger brings on board....You're talking about fifty tons of people and cargo, plus the weight of the plane. Naturally they require long runways. Thanks for the two points!