VERY Early DC-8s

From:         David Lednicer <>
Date:         24 Mar 94 14:01:42 PST
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	Ok Karl, here is a test of your knowledge (I must admit to not 
knowing the answer).  The first DC-8s off the line had a problem with 
excess drag in cruise, which was traced to the wing encountering drag 
divergence earlier than expected.  To fix this, a 4% extended leading 
edge was designed which cured this.  My question is: how many aircraft 
were built with the original leading edge (and what was their 
designation) and how many of these were retrofitted with the new leading 

David Lednicer             | "Applied Computational Fluid Dynamics"
Analytical Methods, Inc.   |   email:
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