This way with the existing or planned programs they would have aircrafts for max payloads of 5 (il112v), 20 (il276) , 30-35 (tu330), 48 (the old il76), 60 (the new il76), 90-110 (the new il-106), 120-150 (an 124), and eventually 180 tons (Slon)
True, though the Il-112 could do with a stretched model with more powerful engines... perhaps turbofans for a 10 ton payload capacity perhaps, so you have 5, 10, 20, 35, 48, 60, 110, 120-150, and 180... and then perhaps add a modified 180 ton model with an H tail for external loads for the space industry.
Over time the 48 and the 120-150 will drop out as they are replaced/upgraded/withdrawn/replaced, so perhaps a reduced power Slon 180 ton could be used for the 120-150 ton range with cheaper less powerful engines, and perhaps a specialist turboprop Il-476 with perhaps a 50 ton capacity and lower flight speed could be developed for paradropping troops and vehicles etc...
Emergency landing. It's broken. Video in the link
Civilian, not military...
The C-130J-30 is a C-130J stretched with ~1T increase in payload;
It was done because extra capacity was needed.
& all USAF C-141s were stretched - it was = to buying 90 new aircraft, in terms of increased capacity.
The C-141 was a bit of a failure like the original C-5, the C-141M and C-5A were improved but still not amazing.
Extrapolating from that, building stretched IL-476s that could carry more fuel/cargo will reduce the # of basic IL-476/8s & future IL-106s + their engines & pilots that will need to be built & trained.
Wrong. Very few aircraft operate very often at max capacity and sometimes fly with much less than max payload weights. Sometimes that is because of density... if you are transferring something like a Hind helicopter you take off the rotor blades and squeeze a few inside but it is unlikely you can fit the max payload limit of Hind helicopters inside such aircraft.
Stretching them makes them heavier and requires better runways and means more fuel needs to be burned just moving around...
The size and weight and payload of the Il-476 didn't just happen by accident... it is already a stretched version of an Il-76 so unless they are idiots it is probably already the size they want.
Also, some/all older IL-76MDs with many hours left on their airframes could be stretched as well. The $ thus saved will be a lot more than spent on extra fuel they'll burn.
It would be easier and cheaper to just build more Il-476s instead of upgrading old planes... the Il-476 is a stretched Il-76MD anyway, but new build.
Stretching planes makes them heavier so fuel burn is increased and they need longer takeoff runs and generate more ground pressure because they are heavier but have the same undercarriage.
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