Need some help with Aviation Physics con...
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Need some help with Aviation Physics concepts
Thursday, December 2, 2004 (12:56 PM)

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Posted by
mikej_45 (1)
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Need some help with Aviation Physics concepts
I read in a flight magazine that in order for a plane to be able to clear the runway during take-off, a plane will need to have 70 percent of its take-off speed by the time it reaches the half-way point on the runway.

I already know this to be a FACT so I am not trying prove it or trying to solve this question through the use of mathematics(it works)

The part that has me stumped is the conceptual aspect of this question.

WHY does a plane need 70% of its total take off speed by the time it reaches the halfway marker of its runway.

If anyone knows the answer to this question I would greatly appreciate the help.


Posted by
hello (109)
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RE: Need some help with Aviation Physics concepts
Posted: December 14, 2004 (00:37 AM)
I would imagine this is mostly a safety issue.
When, say airliner takes-off - they have a "go/abort" point during the roll.
If anything happens after that point - in 99% of the situations - the airliner will take-off no matter what.
Before that point - they will be able to abort the take-off safely.

I think that was the main point of what you found in the book.

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