phugoid
名词 n.
形容词 adj.
英 /ˈfjuːɡɔɪd/
美 /ˈfjuˌɡɔɪd/
英文释义
名词 n.
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The motion of an aircraft, missile, or other flying object continuously oscillating in a vertical plane due to the object pitching up and climbing, thus slowing down; then pitching down and descending, thus speeding up.
— As the amplitude of the phugoid is increased beyond the limits of the semicircle, there is a rapid shortening of the time period as shown by the manner in which the time curve falls away almost immediately after that critical form of flight path is passed. […] [I]f we select phugoids of greater and greater velocity, for a given aerodone the form of the tumbler curve approximates more and more closely to a circle of radius #61;2H#95;n.
形容词 adj.
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Of the motion of an aircraft, missile, or other flying object: continuously oscillating in a vertical plane due to the object pitching up and climbing, thus slowing down; then pitching down and descending, thus speeding up.
— The Phugoid theory deals with the longitudinal stability, and the form and equations of the flight path of an aerodone.
词源
词源 1
The adjective is a learned borrowing from Ancient Greek φῠγή (phŭgḗ, “fleeing, flight; escape; retreat”) (ultimately from Proto-Indo-European *bʰewg- (“to flee”)) + English -oid (“suffix meaning ‘having the likeness of, resembling’, forming adjectives and nouns”). The word was coined by the British aerodynamicist and engineer Frederick W. Lanchester (1868–1946) in his book Aerodonetics (1908), the author mistaking the meaning of φῠγή (phŭgḗ) to be “flight” in the sense of “the act of flying”: see the quotations.
The noun is derived from the adjective.
The noun is derived from the adjective.
词源 2
The adjective is a learned borrowing from Ancient Greek φῠγή (phŭgḗ, “fleeing, flight; escape; retreat”) (ultimately from Proto-Indo-European *bʰewg- (“to flee”)) + English -oid (“suffix meaning ‘having the likeness of, resembling’, forming adjectives and nouns”). The word was coined by the British aerodynamicist and engineer Frederick W. Lanchester (1868–1946) in his book Aerodonetics (1908), the author mistaking the meaning of φῠγή (phŭgḗ) to be “flight” in the sense of “the act of flying”: see the quotations.
The noun is derived from the adjective.
The noun is derived from the adjective.
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数据来源: Wiktionary