▁the ▁Grand ▁Duch y ▁of ▁Baden ▁Category : W ank el ▁engines ▁Category : G erman ▁engine ers ▁Category : G erman ▁invent ors ▁Category : G erman ▁Naz i ▁polit icians ▁Category : Command ers ▁Cross es ▁of ▁the ▁Order ▁of ▁Mer it ▁of ▁the ▁Federal ▁Republic ▁of ▁Germany ▁Category : Re cip ients ▁of ▁the ▁Bav arian ▁Order ▁of ▁Mer it ▁Category : 2 0 th - century ▁invent ors <0x0A> </s> ▁The ▁Curt iss ▁P - 6 0 ▁was ▁a ▁ 1 9 4 0 s ▁American ▁single - engine ▁single - se at , ▁low - wing ▁mon op lane ▁f ighter ▁aircraft ▁developed ▁by ▁the ▁Curt iss - W right ▁company ▁as ▁a ▁successor ▁to ▁their ▁P - 4 0 . ▁It ▁went ▁through ▁a ▁length y ▁series ▁of ▁prototype ▁versions , ▁eventually ▁evol ving ▁into ▁a ▁design ▁that ▁bore ▁little ▁res embl ance ▁to ▁the ▁P - 4 0 . ▁None ▁of ▁these ▁versions ▁reached ▁production . ▁ ▁Design ▁and ▁development ▁The ▁initial ▁design ▁contained ▁in ▁propos als ▁to ▁the ▁United ▁States ▁Army ▁Air ▁Corps ▁was ▁for ▁an ▁aircraft ▁based ▁upon ▁the ▁P - 4 0 ▁design ▁but ▁featuring ▁a ▁low ▁drag ▁l amin ar ▁flow ▁wing , ▁a ▁Cont inental ▁XIV - 1 4 3 0 - 3 ▁invert ed ▁ve e ▁engine , ▁and ▁eight ▁wing - mount ed ▁ 0 . 5   in ▁( 1 2 . 7   mm ) ▁machine ▁guns . ▁This ▁proposal ▁was ▁accepted ▁and ▁a ▁contract ▁for ▁two