Does flight speed vary directly with plane length?

Answer 1

Good question - all other parameters being the same - then YES (assuming the width or circumference will decrease when you make it longer)! Otherwise no.... (again with the acception of drag)... the longer the plane - the more the drag it will have as it slices through the air.

Answer 2

Nowadays the flight speed varies only with the amount of thrust of the engine(s) and drag of the airframe. Length in all reality has nothing to do with speed.

Answer 3

Air speed (knots) will be affected by power of the engines (thrust) weight (gravity eg. trying to lift off or ascend to a higher altitude), lift, and drag (as the other respondent said, larger surface will create more drag).

Think of a semi going down the highway vs an Indy race car with reference to drag. Flaps and landing gear also create more drag. Drag can be created by icing on the aircraft wings, nacelles, and other aircraft surfaces. Headwinds will create more drag on the aircraft.

Adding to airspeed would be throttle settings on the engines during flight, engine thrust on takeoff, heading to a lower altitude or landing an aircraft (gravity pulling on the aircraft), and tailwinds.

So, to answer your question, really, no. A longer or shorter plane is not "faster" than the other, a simple answer would be the relationship of the thrust capability of the engines as compared to the weight of the aircraft, vs. the thrust capability of the engines as compared to the weight of another aircraft.

Answer 4

No, the 747 is one of, if not the fastest airliner out there, but the 777 is no speed demon... the lear 60 is very fast, but the lear 30 is not too quick, its all design, aerodynamics, fuselage and control surface strength, engine thrust, and weight. No correlation between the fuselage and speed.

Answer 5

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Answer 6

not specifically, however the other factors involved do determine a total make up including simple facts like you cant put a huge engine on a tiny frame, so indirectly, yes.. but directly as i think you mean, no, but that is actually an improper question

Answer 7

Interesting question I've never really considered. I know that longer ships can go faster than shorter ones, and they operate in a fluid as do aircraft. Whether that applies to aircraft, though, I'll have to research.

Answer 8

it shouldn't. Speed is reduced by drag, however, and larger surface area=more drag. But it is indirectly compared to length.

Answer 9

What a stupid question

Answer 10

...no, with ground speed.