| 单词 | propfan |
| 释义 | > as lemmaspropfan propfan n. an airscrew having broad blades swept back from a direction perpendicular to the rotation axis; (attributive) designating an aircraft engine or airplane incorporating these. ΘΚΠ society > travel > air or space travel > a means of conveyance through the air > aeroplane > parts of aircraft > means of propulsion > [noun] > aircraft engine > propeller > types of propeller tractor1903 contrapropeller1927 controllable-pitch1929 fixed-pitch propeller1931 contraprop1940 propfan1970 propulsor1975 1970 F. B. Metzger & T. G. Ganger Results of Initial Prop-Fan Model Acoustic Testing I (NASA N 71-25785) 1 In order to explore the low noise potential of a Prop-Fan as an aircraft propulsion system, a noise survey was conducted. 1977 New Scientist 1 Dec. 567/1 The propfan..has eight thin, swept-back blades which allow it to turn at high speeds without encountering the compressibility problems associated with conventional propellers. 1977 New Scientist 1 Dec. 567/2 On a flight from New York to Miami the propfan airliner would take several minutes less than its turbofan counterpart, because of reduced climb and descent times. 1997 Flight Internat. 18 June (Awards Suppl.) 23/3 The An-70 is the first new aircraft to be designed with propfans, using four Progress D-27 engines in a blown-wing configuration. < as lemmas |
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