Re: 90 degree angles

From:         "peter (p.j.) ashwood-smith" <petera@bnr.ca>
Organization: Bell-Northern Research Canada 
Date:         13 Apr 95 11:10:13 
References:   1
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In article <airliners.1995.371@ohare.Chicago.COM>,
Michael C. Pereira <nekonus@pro-entropy.cts.com> wrote:
>Is it posible for an aircraft's hull to withstand a ninety degree turn
>maintaing it's current altitude at speeds above 250 Mph? By ninety degrees
>I mean an exact right angle.

   No. Even if a plane could make a perfect 90 turn which it never could
it would be pretty much equivalent to slamming into a wall at 250Mph. Note,
its not your speed which is the problem its the "perfect 90 angle" that
causes the problem. What you really want to ask is what kind of radius
turn can a hull widthstand for a given speed. When you ask this question
the answer is that for very high performance aircraft the pilots ability
to sustain the G's of the turn are the limiting factor, not the strength
of the airframe.

   Peter