Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: TB-3 jirgin sama ne na ƙarfe na ƙarfe, a matsayin ɗayan ƙirar daga ofishin ƙirar Andrei Tupolev wanda zai dogara ne akan ayyukan ƙirar jirgin sama na ƙarfe na 1918 da kuma fasahar da Hugo Junkers ya fara. Tsarin ya kunshi katako na V wanda aka rufe shi da fata mai laushi wanda ba shi da damuwa wanda ya kasance daga 0.3 mm (1⁄64 in) zuwa 0.8 mm (1⁄32 in) a kauri. Corrugations sun kasance 13 mm (0.51 in) mai zurfi da 50 mm (1.97 in). An goyi bayan reshe na cantilever ta hanyar bututun bututu guda huɗu. A cikin 1934, godiya ga ci gaban ƙarfe mai ƙarfi, an ƙara girman fuka-fuki daga 39.5 zuwa 41.85 mita (129.6 zuwa 137.3 ft) tare da haɓaka yankin reshe na lokaci ɗaya daga 230 zuwa 234.5 m2 (2,476 zuwa 2,524 sq ft). Za a iya tafiya a kowane ɓangare na jirgin sama a cikin takalma mai laushi ba tare da lalata fata ba, kuma gefen gaba na fuka-fuki ya sauka don samar da hanyoyin tafiya don kula da injin. An sarrafa sarrafawa ta hanyar kebul tare da mai sauyawa mai sauyawa da kuma tsarin diyya na diyya idan akwai lalacewar injin a gefe ɗaya. Ba a sanye da madauri mai mahimmanci ba tare da birki ba. Tankunan mai ba su da wuta ko kariya ta kwarara, kodayake injunan suna da tsarin kashe wuta na ciki. An daidaita injunan M-17 don samar da iyakar iyakar ka'idar kilomita 3,250 (1,750 nmi; 2,020 mi) ba tare da toshe wuta ko ƙazantar carburetor ba. Makamai na karewa sun hada da bindigogi masu haske a cikin hasumiya biyar <unk> daya a cikin hanci, biyu a saman tsakiyar fuselage, da kuma "dustbin" wanda za'a iya cirewa a ƙarƙashin kowane reshe tsakanin nacelles na injin. Daga baya bambance-bambancen sun motsa ɗaya daga cikin manyan fuselage turrets a bayan wutsiyar wutsiyar.  Tambaya: Bangarorin injin nawa ne suka gaza wanda ya sanya aka gina tsarin biyan diyya?
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