▁pri zes ▁for ▁the ▁flight ▁over ▁" the ▁eight " ▁in ▁four ▁minutes ▁and ▁ 2 5 ▁seconds ▁in ▁ 1 9 8 4 . ▁In ▁the ▁same ▁year , ▁he ▁set ▁a ▁world ▁speed ▁record ▁at ▁ ▁to ▁receive ▁a ▁second ▁Kre mer ▁prize . ▁Later ▁that ▁year , ▁Hol ger ▁and ▁his ▁sister ▁K atr in , ▁at ▁that ▁time ▁still ▁a ▁child , ▁became ▁the ▁first ▁passenger ▁flight ▁in ▁a ▁human ▁power ed ▁aircraft . ▁ ▁L ength : ▁ 7 . 2 0 ▁m ▁W ings pan : ▁ 2 2 . 0 0 ▁m ▁Wing ▁area : ▁ 1 6 . 5 0 ▁m 2 ▁G lide ▁ratio : ▁ 1 : 3 8 ▁Height : ▁ 2 . 2 0 ▁m ▁Mass ▁of ▁the ▁aircraft : ▁ 2 8   kg ▁Prop eller ▁diameter : ▁ 2 . 7 2 ▁m ▁required ▁minimum ▁power : ▁ 2 0 0 ▁w att s ▁required ▁performance ▁( 1 1 m ▁/ ▁s ): ▁ 2 8 0 ▁W att s ▁ ▁Having ▁sl im med ▁down ▁to ▁just ▁, ▁in ▁the ▁Gün ther ▁designed ▁Mus cul air ▁ 2 , ▁Hol ger ▁set ▁a ▁new ▁speed ▁world ▁record ▁of ▁ ▁in ▁ 1 9 8 5 . ▁ ▁* Length : ▁ 6 . 0 0 ▁m ▁W ings pan : ▁ 1 9 . 5 0 ▁m ▁Wing ▁area : ▁ 1 1 . 7 0 ▁m 2 ▁G lide ▁ratio : ▁ 1 : 3 7 ▁Height