The missile being launched appears to be the Kh-59MK2, a standoff weapon designed especially for the Su-57 and the confines of its two ventral weapons bays. The subsonic cruise missile has a modular, rectangular design
two ventral weapons bays : 2개의 동체 웨펀베이에 내장
The subsonic cruise missile has a modular, rectangular design
사각형의 아음속 순항미사일