iving ▁people ▁Category : Pres idents ▁of ▁the ▁Institution ▁of ▁Struct ural ▁Engine ers ▁Category : B ridge ▁engine ers ▁Category : B rit ish ▁struct ural ▁engine ers ▁Category : Pe ople ▁from ▁Sus sex ▁Category : 1 9 5 6 ▁birth s <0x0A> </s> ▁The ▁D ew oit ine ▁D . 3 0 ▁was ▁a ▁ten - se at ▁cant ile ver ▁mon op lane ▁built ▁in ▁France ▁in ▁ 1 9 3 0 . ▁ ▁The ▁D . 3 0 ▁was ▁a ▁single - engine ▁aircraft ▁but ▁the ▁second ▁was ▁completed ▁as ▁a ▁trim ot or ▁and ▁red es ign ated ▁D . 3 1 . ▁ ▁Design ▁and ▁development ▁The ▁D ew oit ine ▁D . 3 0 ▁first ▁appeared ▁in ▁public ▁at ▁the ▁Paris ▁A ero ▁Show ▁in ▁December ▁ 1 9 3 0 . ▁It ▁was ▁a ▁single - engine , ▁ten - se at ▁passenger ▁aircraft ▁with ▁a ▁high ▁cant ile ver ▁wing ▁and ▁rect angular - section ▁fus el age . ▁It ▁had ▁a ▁fabric - cover ed ▁metal ▁frame ▁and ▁was ▁power ed ▁by ▁a ▁ 4 8 5   k W ▁( 6 5 0   hp ) ▁His p ano - Su iza ▁ 1 2 N br ▁water ▁co o led , ▁u pr ight ▁V - 1 2 ▁engine . ▁This ▁engine ▁was ▁closely ▁cow led , ▁the ▁cow ling ▁following ▁the ▁profile ▁of ▁the ▁two ▁cyl inder ▁banks , ▁and ▁drove ▁a ▁two - bla de ▁prop eller ;