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phugoid

[fyoo-goid] /ˈfyu gɔɪd/
adjective, Aerospace.
1.
of or relating to long-period oscillation in the longitudinal motion of an aircraft, rocket, or missile.
Origin
1905-1910
1905-10; irregular < Greek phyg() flight + -oid
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for phugoid
  • The phugoid oscillation is excited by a pitch or a velocity change.
  • In addition, the phugoid mode of the dynamically scaled aircraft is much closer in frequency to the short period dynamics.
  • The first form is the phugoid mode of oscillation, which is a long-period, slow oscillation of the airplane's flight path.

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