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gelgoog

Brigadier
Registered Member
The Il-76 uses similar engine technology to the MiG-31. That was also based outside Ukraine. That is likely one of the reasons why it was kept.
It was also used in Tupolev commercial airliners back then.

In the 1990s the Russian state under Yeltsin was barely keeping it together. There was little money to fund complex projects. A lot of the heavy bombers were basically mothballed with little prospects for future upgrades. Most of the (few) orders were exports. When you look at the spectrum of products you can actually manufacture and the numbers required plus the amount of systematic failure caused by the loss of a specific engine model it is little surprising, at least to me, they made the choices they did.

You can look at the Il-276 as an example of things to come. It is a T-tail high winged transport aircraft.
It is planned to use the PD-14M engine which will be common with the Irkut MC-21 narrow body airliner.
It is a twin turbofan aircraft in a similar weight class to the quad turboprop C-130J or more similarly to the Kawasaki C-2.

I expect a similar, albeit larger, design to be made with either quad PD-14M or dual PD-35 engines over the next decade to replace the Il-76.

Once Il-112 twin-turboprop work is done, the prototype has already been presented, they should start work on the Il-276 in earnest. This might take, in my estimates, 5 years. After that work on the larger transport aircraft should proceed. I do not consider this to be a bad schedule since the PD-35 engine has still not been developed.
 
Last edited:
Jan 24, 2019
the source (
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) says it's hypothetical, but thought I might share anyway:
sukhoi_s-70_uav_2019_0.jpg
and this side view appeared today (
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):
6492783_original.jpg
 

bd popeye

The Last Jedi
VIP Professional
When things go bumping in sky, the Russians bump BACK!


But in real combat situations...

F-15 Eagles have a record of 102 to zero against mostly Russian/Soviet aircraft.

Air-to-air kills – Air-to-air losses – Losses to ground fire

F-15A/C/I/S Eagle 102-0-0
Gulf War (USA) 32-0-0
Gulf War (Saudi Arabia) 2-0-0
Northern Watch, Southern Watch, Desert Fox (USA) 2-0-0
Bosnia (USA) 0-0-0
Kosovo (USA) 4-0-0
Afghanistan (USA) 0-0-0
Iraq (USA) 0-0-0
Syrian border clashes 1979-1981 (Israel) 19-0-0
Operation Opera (Israel) 0-0-0
Lebanon War (1982) (Israel) 38-0-0
Lebanon War 1982-2000 (Israel) 4-0-0
Lebanon War (2006) (Israel) 0-0-0
Iran Gulf Clash 1984 (Saudi Arabia) 1-0-0

Source >>>
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gelgoog

Brigadier
Registered Member
I did not know Afghanistan, or Lebanon had an air force to speak of.
In all the other cases the F-15 was mostly pitched against aircraft which were one or even two or three generations older.

The closest call was likely the F-15 vs the MiG-25 in the Gulf War. But the results of those clashes are not as lopsided as you make them to be. Especially when you consider the numbers and age difference.

Much for the same reason it is unheard of for an F-15 to shoot down a Su-27, even with the numerical disadvantage, because it is one generation newer than the F-15.
 

TerraN_EmpirE

Tyrant King
Much for the same reason it is unheard of for an F-15 to shoot down a Su-27, even with the numerical disadvantage, because it is one generation newer than the F-15.
No it's not F15 is a fourth gen fighter same as SU27. They came into being concurrently. F15 A In 72 SU27 In 77 F15C in 79.
Where you might have a slightly better argument is in the later iterations but again it's a tit for tat.
F15E 1989 SU30 1992
SU35 2007 F15 Advanced Eagle right now.
 

gelgoog

Brigadier
Registered Member
No it's not F15 is a fourth gen fighter same as SU27. They came into being concurrently. F15 A In 72 SU27 In 77 F15C in 79.
Where you might have a slightly better argument is in the later iterations but again it's a tit for tat.
F15E 1989 SU30 1992
SU35 2007 F15 Advanced Eagle right now.

Eh. No.

The F-15 Eagle was introduced into service in 1976. While the Su-27 Flanker was introduced into service in 1985.

The production Su-27 was quite different from the prototypes. The Su-27 airframe design features relaxed stability and is inherently unstable unlike the F-15. This means you can fight at higher angles of attack and make turns more quickly. Which is why you can even make the Cobra maneuver in it. Not that this maneuver is useful in actual combat, it just demonstrates the agility of the airframe.

The Su-27 also features IRST, off-boresight IR missiles. These are features considered in the West to be part of 4.5 gen aircraft like the Super Hornet or the Eurocanards.
At the time of its introduction it was vastly superior to all Western designs. It took the West a decade to make a competitive aircraft.

Right now there are upgrade packages, new airframes, and mitigation measures against it. But the Russians themselves also refined their design in later iterations with more powerful radar and glass cockpits. Regardless of how many changes you make however the Eagle has a more dated airframe than the Flanker.

The F-22 Raptor design is more maneuverable than the Su-27 Flanker but there are precious few of them and even less combat ready at any given time. It also does not have either IRST nor off-boresight IR missiles at the time of introduction. Two decades later than the Flanker.
 
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TerraN_EmpirE

Tyrant King
F15A came in in 1976 it was updated to the C model in 79.
Off Bore sight missiles are not generational infact the U.S. was experimenting with them at the same time but found them limited due to the available technology.
These systems didn't display until far later instead they were a helmet mounted fixed monocle.

IRST system were present in fighters before F15 but were phased out as unnecessary as vs fourth gens radar and IR guided missiles were there own IRST. With the rise of raptor and stealth they came back into the fold.
 

gelgoog

Brigadier
Registered Member
F15A came in in 1976 it was updated to the C model in 79.
Off Bore sight missiles are not generational infact the U.S. was experimenting with them at the same time but found them limited due to the available technology.
These systems didn't display until far later instead they were a helmet mounted fixed monocle.

IRST system were present in fighters before F15 but were phased out as unnecessary as vs fourth gens radar and IR guided missiles were there own IRST. With the rise of raptor and stealth they came back into the fold.

The South Africans and Israelis AFAIK were among the first in the Western sphere of influence to use off-boresight IR missiles. Then much later missiles like the IRIS-T or the AIM-9X appeared. The Russians also had an advantage in terms of BVR missiles at the time the Su-27 was introduced. But that evaporated and was negated when the AMRAAM became available.

IRST was removed not because it was useless, it was used in the F-14 Tomcat sure, but because it was expensive. The F-22 Raptor for example has the mounting space for it but does not have it installed. Especially now that we have modern CMOS IR sensor technology the sensors are a lot more useful than the older lower-resolution CCD sensors.

The reason for placing the IRST sensor on the aircraft is multiple. You can use multiple-sensor data fusion to better identify the target. You can use a more expensive and higher resolution sensor than you would use in a discardable missile. It is a passive sensor.
 

TerraN_EmpirE

Tyrant King
The reason IRST was on the SU27 wasn't sensor fusion it was backup. The Russian electronics were lack luster.

As to the helmet mounted sighting system. You could then operate in either IR or helmet guided. It was first introduced not on SU27 that was later but by South Africa. The US trailed the Visual Target Acquisition System by Honeywell from 74-78 on F14 and F15. The Russians added there system first to the Mig29 in 85.
 
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