▁did ▁so ▁as ▁part ▁of ▁the ▁Z ven o ▁experiments ▁carried ▁out ▁in ▁the ▁Soviet ▁Union ▁by ▁Vladimir ▁V ak hm ist rov ▁from ▁ 1 9 3 1 . ▁Up ▁to ▁five ▁f igh ters ▁of ▁various ▁types ▁were ▁carried ▁by ▁T up ole v ▁T B - 1 ▁and ▁T up ole v ▁T B - 3 ▁bom bers . ▁▁ 1 9 4 0 s ▁ ▁In ▁August ▁ 1 9 4 1 , ▁these ▁combinations ▁would ▁fly ▁the ▁only ▁combat ▁miss ions ▁ever ▁undert aken ▁by ▁par as ite ▁f igh ters . ▁T B - 3 s ▁carrying ▁Pol ik arp ov ▁I - 1 6 SP B ▁d ive ▁bom bers ▁attacked ▁the ▁C ern av od ă ▁bridge ▁and ▁Const ants a ▁do cks , ▁in ▁Roman ia . ▁After ▁that , ▁this ▁squad ron , ▁based ▁in ▁the ▁Crime a , ▁carried ▁out ▁a ▁tact ical ▁attack ▁on ▁a ▁bridge ▁over ▁the ▁river ▁D nie per ▁at ▁Z apor oz h ye , ▁which ▁had ▁been ▁captured ▁by ▁adv ancing ▁German ▁troops . ▁ ▁Later ▁in ▁World ▁War ▁II , ▁the ▁Luft wa ffe ▁experiment ed ▁with ▁the ▁Mess ersch mitt ▁Me ▁ 3 2 8 ▁as ▁a ▁par as ite ▁f ighter , ▁but ▁problems ▁with ▁its ▁pul se jet ▁engines ▁could ▁not ▁be ▁overcome . ▁Other ▁late - war ▁ro cket - power ed ▁projects ▁such ▁as ▁the ▁Ar ado ▁E . 3 8 1 ▁and ▁S omb old ▁So ▁ 3 4