ru ▁Ci ur cu : ▁invent ed ▁alongside ▁Just ▁Bu isson ▁the ▁reaction ▁engine . ▁Henri ▁Co and ă : ▁aircraft ▁designer , ▁discovered ▁the ▁Co anda ▁effect ▁of ▁fluid ics . ▁George ▁Constant ines cu : ▁founded ▁the ▁Theory ▁of ▁Son ics , ▁based ▁on ▁which ▁he ▁developed ▁a ▁number ▁of ▁applications ▁including ▁a ▁synchron ization ▁g ear . ▁He ▁is ▁also ▁known ▁as ▁the ▁invent or ▁of ▁a ▁mechanical ▁tor que ▁converter , ▁he ▁applied ▁to ▁an ▁experimental ▁autom obile ▁as ▁automatic ▁transmission . ▁Justin ▁Cap r ă : ▁engineer ▁and ▁invent or ; ▁machines ▁on ▁which ▁he ▁worked ▁included ▁a ▁jet pack , ▁ 7 2 ▁fuel - efficient ▁cars , ▁ 1 5 ▁un con vent ional ▁engines ▁and ▁seven ▁aircraft , ▁among ▁others . ▁ ▁D ▁Carol ▁Dav ila : ▁invent ed ▁the ▁Dav ila ▁t inct ure ▁used ▁for ▁the ▁treatment ▁of ▁ch ol era , ▁an ▁op io id - based ▁or al ▁solution ▁in ▁use ▁for ▁sympt om atic ▁management ▁of ▁di arr he a . ▁An ast ase ▁Drag om ir : ▁he ▁invent ed ▁the ▁par ach uted ▁cell , ▁a ▁dis charge able ▁chair ▁from ▁an ▁aircraft ▁or ▁other ▁vehicle , ▁designed ▁for ▁emer gency ▁esc apes , ▁an ▁early ▁version ▁of ▁the ▁modern ▁e jection ▁seat . ▁ ▁E ▁Laz ăr ▁E de lean u : ▁he ▁was ▁the ▁first ▁chem ist ▁to ▁synth es ize ▁am ph et am ine . ▁ ▁F ▁Alexand ru ▁Fro da : ▁discovered ▁Fro