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I-TB-3 yayingumkhumbi wenqwelo-moya owenziwe ngentsimbi, njengenye yoyilo oluvela kwi-Andrei Tupolev's design bureau ukuba lusekwe kwi-1918-onward all-metal aircraft design practices and technology ephambili nguHugo Junkers. Isakhelo sasenziwe ngama-V-section beams agqunywe ngesikhumba esingathandekiyo esingathandekiyo esivela kwi-0.3 mm (1⁄64 intshi) ukuya kwi-0.8 mm (1⁄32 intshi) ubukhulu. I-corrugations yayiyi-13 mm (0.51 intshi) kunye ne-50 mm (1.97 intshi) ecaleni. Iphiko le-canvertile laxhaswa yi-tube-section spars. Ngo-1934, ngenxa yokuphuhliswa kwee-alloys zentsimbi ezinamandla, iimpiko zanda ukusuka kwi-39.5 ukuya kwi-41.85 metres (129.6 ukuya kwi-137.3 ft) ngaphandle kwe-walk turbin kunye nendawo ephambili ephambili ephambili ephambili ephambili ukusuka kwi-230 ukuya kwi-24.5 m2 nganye, ukuya kwi-2,56 ft.
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