a physics question

Real aviation things here. News, items of interest, information, questions, etc!

a physics question

Postby labu » Fri Mar 11, 2005 11:33 pm

an aircraft flying directly north from the equator will that find itself curving toward the east.

Why would this happen?
air safety is no accident
User avatar
labu
Ground hog
Ground hog
 
Posts: 27
Joined: Mon Apr 05, 2004 6:08 am
Location: Hong Kong

Re: a physics question

Postby SilverFox441 » Sat Mar 12, 2005 12:09 am

Angular velocity differences at the Equator and poles or magnetic deviation, either one could cause this effect for different reasons.
Steve (Silver Fox) Daly
User avatar
SilverFox441
Major
Major
 
Posts: 1335
Joined: Sun Apr 13, 2003 12:54 am
Location: Mississauga, Ontario, Canada

Re: a physics question

Postby Mobius » Sat Mar 12, 2005 1:12 am

I remember it being something to do with the coriolis effect but I can't remember so, I'm not really sure.
Image
User avatar
Mobius
Major
Major
 
Posts: 3653
Joined: Thu Nov 04, 2004 10:44 pm
Location: Wisconsin

Re: a physics question

Postby labu » Sat Mar 12, 2005 1:40 am

thanks, it should be in the case.
i've found sth on the web about the effect

coriolis effect - wikipedia
http://en.wikipedia.org/wiki/Coriolis_effect/
http://en.wikipedia.org/wiki/Coriolis_effect/
air safety is no accident
User avatar
labu
Ground hog
Ground hog
 
Posts: 27
Joined: Mon Apr 05, 2004 6:08 am
Location: Hong Kong

Re: a physics question

Postby labu » Sat Mar 12, 2005 1:42 am

air safety is no accident
User avatar
labu
Ground hog
Ground hog
 
Posts: 27
Joined: Mon Apr 05, 2004 6:08 am
Location: Hong Kong

Re: a physics question

Postby eno » Sat Mar 12, 2005 3:41 am

OOO a nice Scania bus in your avatar..... Probably with coachwork from Scotland.
[align=center][img]http://www.simviation.com/yabbuploads/imaginsigeno.jpg[/img][/align]
User avatar
eno
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 6708
Joined: Sun Jan 18, 2004 12:30 pm
Location: Derbyshire UK

Re: a physics question

Postby Rifleman » Sat Mar 12, 2005 10:28 am

an aircraft flying directly north from the equator will that find itself curving toward the east.

Why would this happen?


I would think this has to do with the rotation of the earth and the fact that the atmosphere will "slip" in relationship to the planet......the aircraft is no longer attached to the planet proper, and is in fact just a "boat" in a moving stream........ :)
Image
User avatar
Rifleman
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 5684
Joined: Sat Oct 12, 2002 4:44 pm
Location: Tropical island in the Pacific

Re: a physics question

Postby beaky » Sat Mar 12, 2005 1:10 pm

Hmmm. I'm thinking Coriolis, because if it's just the atmosphere "slipping" due to inertia, the plane would drift west (the Earth rotates eastward!). But here's a question: Are you talking true north or magnetic north? The magnetic North Pole is a few hundred miles south of the geographic North Pole...
Image
User avatar
beaky
Global Moderator
Global Moderator
 
Posts: 12877
Joined: Thu Dec 16, 2004 8:00 am
Location: Shenandoah, PA USA

Re: a physics question

Postby Mobius » Sat Mar 12, 2005 5:43 pm

The magnetic North Pole is a few hundred miles south of the geographic North Pole...


But it would be east on one side of the earth and west on the other side.
Image
User avatar
Mobius
Major
Major
 
Posts: 3653
Joined: Thu Nov 04, 2004 10:44 pm
Location: Wisconsin

Re: a physics question

Postby Saratoga » Sat Mar 12, 2005 9:10 pm

Ask.com? ;)

It is a question though of which north you are talking about.
True or magnetic?
Last edited by Saratoga on Sat Mar 12, 2005 9:10 pm, edited 1 time in total.
Pilot for a major US airline certified in the: EMB-120, CRJ, 727, 737, 757, 767, and A-320 and military, T-38, C-130, C-141, and C-5 along with misc. other small airplanes. Any questions, I'm here for you.
User avatar
Saratoga
Captain
Captain
 
Posts: 571
Joined: Sat May 08, 2004 9:48 pm
Location: Dallas-Ft. Worth Intl. (KDFW)

Re: a physics question

Postby labu » Sun Mar 13, 2005 10:29 pm

Image
air safety is no accident
User avatar
labu
Ground hog
Ground hog
 
Posts: 27
Joined: Mon Apr 05, 2004 6:08 am
Location: Hong Kong

Re: a physics question

Postby Saratoga » Mon Mar 14, 2005 6:29 pm

Ya, a true heading of 360 would lead you straight to the North Pole, where the compass would reverse and lead you straight south. Magnetic heading would lead you to the magnetic North Pole, where the compass would reverse, and you would keep flying north but flying south... ::)
Pilot for a major US airline certified in the: EMB-120, CRJ, 727, 737, 757, 767, and A-320 and military, T-38, C-130, C-141, and C-5 along with misc. other small airplanes. Any questions, I'm here for you.
User avatar
Saratoga
Captain
Captain
 
Posts: 571
Joined: Sat May 08, 2004 9:48 pm
Location: Dallas-Ft. Worth Intl. (KDFW)

Re: a physics question

Postby labu » Tue Mar 15, 2005 5:57 am

an aircraft flying directly north from the equator will that find itself curving toward the east.

Why would this happen?


Firstly I must say my English is not good  :-/, and hopefully it's understandable. I'm a layman in Physics, actually both aviation and Physics.  ???

These are one of my friend
air safety is no accident
User avatar
labu
Ground hog
Ground hog
 
Posts: 27
Joined: Mon Apr 05, 2004 6:08 am
Location: Hong Kong

Re: a physics question

Postby beaky » Tue Mar 15, 2005 4:52 pm

Ask.com? ;)

It is a question though of which north you are talking about.
True or magnetic?


Right. And if you were west of it, you'd curve east, if you were trying to fly north using only the compass. Not specified in the question, so it remains a possibility.
Could also just be distortion of isogonic (magnetic field) lines; they're not straight, and vary according to location.
Image
User avatar
beaky
Global Moderator
Global Moderator
 
Posts: 12877
Joined: Thu Dec 16, 2004 8:00 am
Location: Shenandoah, PA USA

Re: a physics question

Postby beaky » Tue Mar 15, 2005 4:55 pm

[quote]

Firstly I must say my English is not good  :-/, and hopefully it's understandable. I'm a layman in Physics, actually both aviation and Physics.  ???

These are one of my friend
Image
User avatar
beaky
Global Moderator
Global Moderator
 
Posts: 12877
Joined: Thu Dec 16, 2004 8:00 am
Location: Shenandoah, PA USA

Next

Return to Real Aviation

Who is online

Users browsing this forum: No registered users and 448 guests