Editing Dutch roll (section)

==Name==
The origin of the name Dutch roll is uncertain. However, it is likely that this term, describing a lateral asymmetric motion of an airplane, was borrowed from a reference to similar-appearing motion in [[ice skating]]. In 1916, aeronautical engineer [[Jerome C. Hunsaker]] published: "Dutch roll – the third element in the [lateral] motion [of an airplane] is a yawing to the right and left, combined with rolling. The motion is oscillatory of period for 7 to 12 seconds, which may or may not be damped. The analogy to 'Dutch Roll' or 'Outer Edge' in ice skating is obvious."<ref>{{cite journal|last=Hunsaker|first=Jerome C.|year=1916|title=Dynamical Stability of Aeroplanes|journal=[[Proceedings of the National Academy of Sciences of the United States of America]]|volume=2|issue=5|page=282|publisher=[[National Academy of Sciences]]| doi=10.1073/pnas.2.5.278|pmid=16576144|pmc=1091005|bibcode=1916PNAS....2..278H|doi-access=free}}</ref>
In 1916, Dutch Roll was the term used for skating repetitively to right and left (by analogy to the motion described for the aircraft) on the outer edge of one's skates. By 1916, the term had been imported from skating to aeronautical engineering, perhaps by Hunsaker himself. 1916 was only five years after G. H. Bryan did the first mathematical analysis of lateral motion of aircraft in 1911.<ref>{{cite book|author=Bryan, G. H.|year=1911|title=Stability in Aviation|url=https://archive.org/details/in.ernet.dli.2015.38918 |page=[https://archive.org/details/in.ernet.dli.2015.38918/page/n137 123]}}</ref>