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Is there a speed limit on planes?

ardinn

Sitting here in the aiport an hr delayed because the plane im going on arrived late! Do planes have a speed limit? If the planes late can captain careful not 'drive er on' so to speak. Put the foot down ye spa I have a session in Portugal thats waiting on me!!!

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Car99

Yes, though to a very limited extent. Pilots almost never do the in-flight equivalent of foot to the floor. Each commercial jet has a Flight Management System (FMS) that calculates its most efficient air speed given certain variables such as the number of passengers aboard and the cruising altitude. If a pilot wanted to accelerate past this sweet spot of efficiency, even by a little bit, he could end up burning substantially more fuel and adding thousands of yoyo's to the overall flight expense. So while it’s theoretically possible for a pilot to floor it, that only happens under special circumstances, almost always under direction from a superior, such as when air traffic control needs to clear up a scheduling conflict.

Or a good tail wind will help and save the JetA1.

cml387

The limit for a passenger aircraft is the speed of sound. Exceed that and bad things happen.

prinzeugen

ardinn wrote: »

Sitting here in the aiport an hr delayed because the plane im going on arrived late! Do planes have a speed limit? If the planes late can captain careful not 'drive er on' so to speak. Put the foot down ye spa I have a session in Portugal thats waiting on me!!!

Yes. And in addition to the corridor thing, the max speed varies depending on how high the plane is flying.

A standard civil airliner cannot go faster than the speed of sound (Mach 1) but would cruise at around Mach 0.90 (90% of the speed of sound)

The speed of sound at sea level is about 760mph and at 20,000ft is about 705mph.

So the higher a plane flies, its max speed in mph will drop.

For example a 747 at sea level could do a max of about 730mph while one at 20,000ft would have a max speed of about 685mph.

However at high altitude, the air is thinner meaning the plane uses less fuel which is why long distance flights fly at 38-40,000 ft. Money.

Roger_007

Donald Trump wrote: »

Yeah but but but, if you fly fast enough you can get there before the fuel runs out!

Genius.:D:D

Donald Trump

Amirani wrote: »

Nah not really. Flying faster uses more fuel though, and fuel is the largest variable cost to commercial airlines.

Yeah but but but, if you fly fast enough you can get there before the fuel runs out!

AllForIt

Depends how big your rectum is.

odyssey06

If you put one on the M1, yes.

And, presumably, on the runway.

Supersonic military aircraft are probably limited in where they can go BOOM. Think Concorde could only go supersonic over the Atlantic.

DMcL1971

Planes fly along specific routes. If you fly too fast you will catch up the plane ahead of you on that route. So you have to stay at a specific speed.

SEPT 23 1989

i would be more worried about the violent thunderstorms you will be flying into tonight

nowaynever

Yes, terminal velocity.

EchoIndia

This is a good explanation: https://www.cntraveler.com/story/how-pilots-make-up-time-in-the-air

TheValeyard

Go to slow and plane goes bye bye

Samuel T. Cogley

ardinn wrote: »

Sitting here in the aiport an hr delayed because the plane im going on arrived late! Do planes have a speed limit? If the planes late can captain careful not 'drive er on' so to speak. Put the foot down ye spa I have a session in Portugal thats waiting on me!!!

Air traffic control can set limits where needed, my only knowledge of this being watching 'Pushing Tin'.

McMurphy

ardinn wrote: »

Sitting here in the aiport an hr delayed because the plane im going on arrived late! Do planes have a speed limit? If the planes late can captain careful not 'drive er on' so to speak. Put the foot down ye spa I have a session in Portugal thats waiting on me!!!

There's definitely one on descending anyway.

Go hard enough over it, and your bolloxed.

Donald Trump

I think you are allowed two wraps per passenger

Amirani

Nah not really. Flying faster uses more fuel though, and fuel is the largest variable cost to commercial airlines.