soviet powered tactical bomber designed higher performance swept wing version late 1940s thin wing engine necessitated use tandem landing gear soviet aircraft apparently canceled prototype flight sources disagree development follow design began june flown designed meet requirement jet bomber carry range maximum speed mph design took starting point thin mid mounted swept wings sweep angle chosen allow aircraft reach required speed intended powered new flow engines lbf thrust wing mounted fuselage area ruled thin wing necessary cure excessive lateral stability limited fuel carried tip tanks required meet range requirement slim engine allow main landing gear solution house fuselage bicycle landing gear soviet aircraft small twin wheeled mounted underneath stabilize aircraft ground aircraft crew pilot gunners pilot dorsal gunner shared compartment subdivided cockpit position extensively nose dorsal gunner placed pilot underneath canopy tail gunner separate compartment rear aircraft defensive armament cannon fixed forward pair dorsal turret immediately cockpit tail turret maximum bomb load initial results favorable scale formally reviewed march prototype completed august incident involving rival swept wing broke engine mount low altitude flight led delays additional tests demanded determine strength wings flight following year program lost momentum ordered concentrate resources service introduction formally terminated government order august prototype eventually scrapped beginning 1960s aviation historian quotes maiden flight date september says actually flew subject speculation west common ventral gun mount soviet bomber attain speed mph specifications estimated data history characteristics crew length wingspan wing area weight gross weight powerplant lbf thrust speed mph cruising speed mph range nmi service ceiling armament guns bombs kilograms
Ilyushin Il-30