Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Ko da yake ba jirgin sama mafi sauri ko mafi tsawo a cikin aji ba, Douglas DB-7 jerin sun bambanta kanta a matsayin mai karfi, abin dogara jirgin saman soja tare da kyakkyawan suna don gudun da kuma maneuverability. A cikin rahoto ga British Aeroplane and Armament Experimental Establishment (AAEE) a RAF Boscombe Down, matukan jirgi masu gwaji sun taƙaita shi kamar haka: "ba shi da aibi kuma yana da sauƙin tashi da sauka... Jirgin sama yana wakiltar tabbatacciyar fa'ida a cikin ƙirar sarrafa jirgin... mai matuƙar farin ciki don tashi da motsawa. " Tsoffin matukan jirgi galibi suna la'akari da shi jirgin da suka fi so na yaƙin saboda ikon jefa shi kamar mayaƙi. An gano cewa Douglas mai jefa bom / dare ya zama mai iya daidaitawa kuma ya sami rawar a kowane wasan kwaikwayo na yaƙi na yaƙi, kuma ya yi fice a matsayin "jirgin saman matukin jirgi". Lokacin da aka gama samar da DB-7 a ƙarshe a ranar 20 ga Satumba, 1944, Douglas ya gina 7,098 da ƙarin 380 ta Boeing. A matsayin hujja na ƙwarewar Amurka a cikin samar da taro Douglas ya sake tsara masana'antar Santa Monica don ƙirƙirar layin samar da kayan aiki don samar da A-20 Havocs. Layin haɗin yana da tsawon fiye da mil (ƙafa 6,100), amma ta hanyar juyawa baya da gaba, ya dace da gini wanda tsawonsa ƙafa 700 ne kawai. An rage sa'o'in mutum da kashi 50% ga wasu ayyukan. Yawan aiki ya ƙaru sau uku.  Tambaya: Mene ne sunan jirgin saman yakin basasa?
Douglas DB-7