[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f6-4B3kX3SuAvrvaQbW6qTDiN6eJI4zK23zPFk6W8nno":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-10-06 20:47:45",99035305,[8,9,10,11],"parasite drag","induced drag","interference drag","form drag",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},14,"b26bc4a766b17c515dbf17d8ef0a02c1","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1d540d725392cb243501c21e2f8acb88.jpg","民航机务专业英语","eeb059b9004d466a82a25ac4c4c01f83","4.1.6","( ) is caused by the frontal area of the airplane components being exposed to the airstream",[21,32,41,46,51,54,61,67,72,77],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],99035301,[25,26,27,28],"Gravity","Lift","Drag","Thrust","( )is any force acting parallel to the flight path but in the opposite direction","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],99035302,[36,37,38,39],"induced drag; parasite drag","form drag; skin Friction drag","form drag; interference drag","induced drag; interference drag","The total drag is the combination of ( ) and ( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":45,"source":30,"type":31},[],99035303,[8,9,10,11],"While lift is created, some drag is also induced by the creation of lift. And this component of the wing's resultant force is called ( )",{"answer":47,"createTime":5,"id":48,"options":49,"question":50,"source":30,"type":31},[],99035304,[8,9,10,11],"The air molecules resist this disturbance, and the resistance is manifested as a drag force called ( )",{"answer":52,"createTime":5,"id":6,"options":53,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":55,"createTime":5,"id":56,"options":57,"question":60,"source":30,"type":31},[],99035306,[58,59],"true","false","Induced drag is the undesirable but unavoidable by-product of lift, and increases in direct proportion to increases in angle of attack. ( )",{"answer":62,"createTime":63,"id":64,"options":65,"question":66,"source":30,"type":31},[],"2023-10-06 20:47:46",99035307,[58,59],"The greater the angle of attack up to the critical angle, the greater the amount of lift developed, and the greater the induced drag is. ( )",{"answer":68,"createTime":63,"id":69,"options":70,"question":71,"source":30,"type":31},[],99035308,[58,59],"The more streamlined an object is, the greater the parasite drag is. ( )",{"answer":73,"createTime":63,"id":74,"options":75,"question":76,"source":30,"type":31},[],99035309,[58,59],"The larger the size of the object in the airstream, the greater the parasite drag.( )",{"answer":78,"createTime":63,"id":79,"options":80,"question":81,"source":30,"type":31},[],99035310,[58,59],"As speed increases, the amount of parasite drag increases. If the speed is doubled, four times as much drag is produced. ( )"]