Jet engines

[lovejoy0120]

How does a jet engine get 40 tonnes of the ground at 180 mph in 2500 m from a standing start ?

Thanks

[Skids]

They give the aircraft enough forward speed to create lift at the wings.

[Clanad]

And they do that by producing an enormous amount of thrust measured in pounds. The formula is: Thrust= weight of air in pounds per second X velocity divided by 32.2, which is the normal acceleration due to gravity in feet per second. Thus an unaccelrated turbojet engine can continously produce a large amount of thrust from a relatively small, light weight engine. Large engines such as on the Boeing 777 produce nearly 128,000 pounds of thrust. at sea level...

[Gef]

Only 40 tonnes? What about the heavy aircraft? LOL