aw . ▁ ▁References ▁ ▁Category : V ill ages ▁in ▁Wo ł omin ▁County <0x0A> </s> ▁The ▁D FS ▁ 3 4 6 ▁( Sam oly ot ▁ 3 4 6 ) ▁was ▁a ▁German ▁ro cket - power ed ▁swe pt - wing ▁aircraft ▁which ▁began ▁development ▁during ▁World ▁War ▁II ▁in ▁Germany . ▁It ▁was ▁designed ▁by ▁Felix ▁K racht ▁at ▁the ▁Deutsche ▁Forsch ungs anstalt ▁für ▁Seg elf l ug ▁( DF S ), ▁the ▁" G erman ▁Institute ▁for ▁S ail plane ▁Fl ight ". ▁A ▁prototype ▁was ▁constructed ▁but ▁did ▁not ▁reach ▁completion ▁before ▁the ▁end ▁of ▁the ▁war . ▁It ▁was ▁taken ▁to ▁the ▁Soviet ▁Union ▁where ▁it ▁was ▁completed , ▁tested ▁and ▁flow n ▁( with ▁ind ifferent ▁success ). ▁ ▁Design ▁The ▁D FS - 3 4 6 ▁was ▁a ▁mid wing ▁design ▁of ▁all - met al ▁construction . ▁The ▁front ▁fus el age ▁of ▁the ▁ 3 4 6 ▁was ▁a ▁body ▁of ▁rotation ▁based ▁on ▁the ▁N AC A - Profile ▁ 0 0 1 2 - 0 , 6 6 - 5 0 . ▁The ▁middle ▁part ▁was ▁approximately ▁cyl ind rical ▁and ▁narrow ed ▁to ▁the ▁cut ▁off ▁to ▁accommod ate ▁vert ically ▁array ed ▁no zz les ▁in ▁back . ▁Probably ▁for ▁volume ▁and ▁weight ▁reasons ▁the ▁D FS - 3 4 6 ▁was ▁equ ipped ▁with ▁landing ▁sk ids , ▁both ▁in ▁the ▁original ▁German ▁design ▁and ▁in ▁the ▁later ▁Soviet ▁pro tot ypes ; ▁this ▁caused