. 7 %) ▁section . ▁Like ▁the ▁tail ▁surfaces , ▁they ▁were ▁fabric ▁covered . ▁Each ▁leading ▁edge ▁was ▁linked ▁by ▁a ▁short ▁forward ▁extension ▁of ▁the ▁control ▁column ▁by ▁a ▁vertical , ▁out ward ▁lean ing ▁push rod ▁providing ▁rot ations ▁of ▁up ▁to ▁ ± 1 0 ° . ▁ ▁Oper ational ▁history ▁The ▁second ▁Rh ön ▁competition , ▁held ▁in ▁ 1 9 2 1 , ▁attract ed ▁ 4 6 ▁entries , ▁many ▁more ▁than ▁in ▁the ▁previous ▁year . ▁About ▁half ▁arrived ▁at ▁the ▁Wasser ku ppe ▁and ▁not ▁all ▁of ▁these ▁fle w . ▁P riz es ▁were ▁awarded ▁for ▁total ▁time ▁in ▁the ▁air ▁( same ▁pilot , ▁duration ▁more ▁than ▁ 1 5 ▁seconds ), ▁minimum ▁loss ▁of ▁height ▁in ▁a ▁flight ▁last ing ▁more ▁than ▁ 6 0 ▁seconds ) ▁and ▁greatest ▁distance ▁flow n . ▁A ▁grand ▁prize ▁for ▁the ▁greatest ▁flight ▁duration ▁last ing ▁more ▁than ▁ 5 ▁minutes ▁with ▁a ▁specified ▁maximum ▁alt itude ▁loss ▁was ▁not ▁awarded . ▁ ▁Flow n ▁by ▁Karl ▁Kol ler , ▁the ▁Mun ich ▁aircraft ▁was ▁very ▁successful ▁and ▁was ▁awarded ▁first ▁prize ▁in ▁the ▁height ▁loss ▁and ▁distance ▁flow n ▁categories . ▁Kol ler ' s ▁greatest ▁distance ▁in ▁one ▁flight ▁was ▁. ▁He ▁was ▁runner - up ▁to ▁Will i ▁Pel z ner ▁in ▁the ▁duration ▁category ; ▁Pel z ner ▁fle w ▁ 5 7 ▁fl ights ▁on ▁his ▁own ▁hang ▁gl ider ▁and ▁ 5 ▁on ▁the ▁North - B aver