An aircraft motion where the vehicle pitches up and climbs, increasing speed, and then pitches down and descends, decreasing speed.

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  • Phugoid — A phugoid (pronounced IPA|/fjugod/) is an aircraft motion where the vehicle pitches up and climbs, and then pitches down and descends, accompanied by speeding up and slowing down as it goes uphill and downhill. This is one of the basic flight… …   Wikipedia

  • phugoid — /fyooh goyd/, adj. Aerospace. of or pertaining to long period oscillation in the longitudinal motion of an aircraft, rocket, or missile. [1905 10; irreg. < Gk phyg(é) flight + OID] * * * …   Universalium

  • phugoid — A pitching motion in which kinetic and potential energy (speed and altitude, in this case) are traded. Each cycle typically lasts about 60 s and may continue for many minutes. The motion resembles a roller coaster in which, as the aircraft nose… …   Aviation dictionary

  • phugoid — phu·goid …   English syllables

  • phugoid — ˈfyüˌgȯid adjective Etymology: irregular from Greek phygē act of fleeing, avoidance, flight + English oid; akin to Greek pheugein to run away, flee more at fugitive : of, relating to, or representing variations in the longitudinal motion or… …   Useful english dictionary

  • phugoid curve — noun also phugoid ( s) : a curve showing the motion of the center of mass of an airplane during a phugoid oscillation …   Useful english dictionary

  • phugoid chart — noun : a chart showing a complete series of phugoid curves corresponding to different starting conditions …   Useful english dictionary

  • phugoid oscillation — noun : a long period oscillation in the longitudinal motion of an airplane …   Useful english dictionary

  • phugoid theory — noun : the theory dealing with the longitudinal stability and the form and equations of the flight path of a glider …   Useful english dictionary

  • Flight dynamics — is the science of air and space vehicle orientation and control in three dimensions. The three critical flight dynamics parameters are the angles of rotation in three dimensions about the vehicle s center of mass, known as pitch , roll and yaw… …   Wikipedia

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