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elp
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 Posted: Dec 20, 2004 - 06:09 PM
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F-16.net Editor
Joined: Sep 23, 2003 - 09:08 PM
Posts: 3133
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Trivia, as I really don't know and am curious:
What earns an airliner a "Heavy" designation in its call sign?
Example: "Delta 328 Heavy"
Is it because of its phyical weight on the ground so as to know its ground/runway limits or for wake turburlance swath produced by a larger airframe while flying... or both?
Thanks to anyone that answers. |
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- ELP -
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 Posted: May 26, 2012 - 10:42 PM
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F-16.net Sponsor
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LinkF16SimDude
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Posted: Dec 20, 2004 - 11:51 PM
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Elite 2K
Joined: Jan 31, 2004 - 07:18 PM
Posts: 2232
Status: Offline
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It is indeed weight related. It's given to any aircraft capable of takeoff weights of more than 255,000 pounds whether or not they are operating at this weight during a particular phase of flight. You normally hear the "heavy" designator with wide-bodies but since it's weight-based it can also be used for certain version of narrow-body aircraft.
Here's a handy chart of what NATCO classifies what airframe as.  |
Last edited by LinkF16SimDude on Dec 21, 2004 - 12:18 AM; edited 2 times in total
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Roscoe
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Posted: Dec 21, 2004 - 12:02 AM
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Elite 1K
Joined: Jun 29, 2004 - 09:14 PM
Posts: 1253
Location: Las Vegas
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| Big reason is on takeoff when they rotate and generate lift they create huge vortices (for simplicity, a vortex is in general proportional in strength to the lift beining generated). Any aircraft that is "heavy" on takeoff requires the following aircraft to wait 2 minutes before rolling. Watched a tape many years ago of a Learjet hitting the vortices of a heavy...completely flipped it over. Good thing it was at altitude! |
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Roscoe
<b>"It's time to get medieval, I'm goin' in for guns"</b> - <i>Dos Gringos</i>
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