▁greatly ▁mit ig ated ▁by ▁very ▁thin ▁ann ular ▁fan ▁bl ades ▁with ▁a ▁thick ness ▁of ▁only ▁ 1 % ▁ch ord ▁length . ▁The ▁very ▁thin ▁bl ades ▁are ▁used ▁because ▁they ▁are ▁optimal ▁for ▁hover ing ▁efficiency . ▁For ▁a ▁thin ▁ 3 2 - bla de ▁fan , ▁the ▁strength ▁of ▁carbon ▁fi ber ▁composite ▁material ▁is ▁strong ▁enough , ▁with ▁a ▁weight ▁of ▁only ▁ 1 . 0 5 % ▁of ▁the ▁total ▁aircraft ▁weight . ▁The ▁total ▁weight ▁of ▁the ▁lift ▁fan ▁system ▁including ▁the ▁bear ings , ▁g ears , ▁and ▁rings ▁can ▁be ▁hopefully ▁controlled ▁to ▁less ▁than ▁ 5 % ▁of ▁the ▁aircraft ▁weight . ▁ ▁References ▁▁ ▁Category : V TO L ▁aircraft <0x0A> </s> ▁The ▁Auto Pro ▁Pla que ▁was ▁awarded ▁ann ually ▁to ▁the ▁player ▁with ▁the ▁best ▁plus / minus ▁total ▁in ▁the ▁Quebec ▁Major ▁Junior ▁Hockey ▁League . ▁The ▁award ▁was ▁initi ated ▁in ▁ 1 9 8 9 – 9 0 , ▁then ▁known ▁as ▁the ▁Trans amer ica ▁Pla que , ▁and ▁dis cont in ued ▁in ▁ 2 0 0 1 – 0 2 . ▁ ▁W inners ▁ ▁External ▁links ▁ ▁Q M J HL ▁official ▁site ▁List ▁of ▁tro phy ▁w inners . ▁ ▁Category : Que bec ▁Major ▁Junior ▁Hockey ▁League ▁tro ph ies ▁and ▁awards ▁Category : A wards ▁established ▁in ▁ 1 9 9 0 ▁Category : A wards ▁dis est ab lished ▁in ▁ 2 0 0 1 <0x0A> </s>