Hey pakistani guy, aren't you the one, who was keep demanding the Mod, to ban me permanently, because you don't like what I posted? Shouldn't you ask your guru/expert, the gambler guy, for information?
"MR @Asoka your Jets top speed will Mach-3, you lost maneuverability and agility, and its become a interceptor, not 5th gen AD jet, like those MIG-25"
Not necessarily.
The Mig-25 has poor maneuverability and agility, because it's airframe was made of
high strength steel, instead of Titanium like the SR-71. The reason being, Titanium was still very difficult to work with, in the early 1960's.
The CIA used a phoney front company to purchased the Titanium from the Russian, and go to great length and expense to produce the titanium SR-71 airframe. So only a few dozen SR-71 was produced, whereas, the Russian need to produce thousands of Mig-25 to intercept the American bombers, so they can't afford the titanium Mig-25.
To compensate the extra weight of the steel frame, the Russian has to use as little steel as possible. That means the resultant aircraft will not as strong as they would like, so it would not able to pull high-g.
In fact, it is reported, the early Mig-25 could pull only max. 3-g. The current Mig-31, the successor to Mig-25, could pull maximum 5-g, making it, having limited maneuverability and agility. (The ability to pull high-g depends on the speed. Pulling high-g at subsonic speed, is not the same on the airframe, as pulling high-g at Mach 3. So, if you could pull only 5-g at subsonic, you could pull much less g at Mach 3. You probably could fly only, at a almost straight line, at those speed.)
But that's not really a problem. They are meant to use to intercept the heavy bombers like B-52 and cruise missiles, which have even less maneuverability and agility.
The 5-Gen fighter will all have
one piece forged Titanium bulkheads, and other forged titanium airframe component for exceptional strength. Thus, it is guaranteed that they will have the super strength to pull high-g, at those supersonic speed, so, to achieve the
superior supersonic maneuverability and agility, which is the signature of 5-gen. fighters, that no 3-gen or 4-gen fighters will be able to match.
This is the most important feature of 5-gen fighter. The 3-gen or 4-gen fighters (like J-10, Rafael, Typhoon, Flankers, F-15, F-16, F-18) could reduce their RCS, in their future variants, but they will never have the massive engine power, and super airframe strength, required to have supercruise and
superior supersonic maneuverability and agility. This requires a
total redesign from the ground up.
That is, if you have the strength and power to pull high-g at
Mach 1.6, you will have the strength and power to pull those high-g, at even higher speed, like
Mach 3. Your maneuverability and agility, will be reduced, as you go faster. Yes. that's true. But that will be still a whole lot better than the previous generation of fighter.
Look at this chart from an old post of mine, last year.
https://defence.pk/pdf/threads/chen...news-discussions.111471/page-485#post-9034688
The Astonishing Supersonic Maneuverability Difference Between 4th and 5th Generation Fighters.
I have again and again emphasized the importance of Supersonic Cruise and Supersonic Maneuverability to 5th Gen. fighter. Without ability to do Supersonic Cruise, there could be no Supersonic Maneuverability.
Here is the picture that illustrate the
astonishing difference between Supersonic Maneuverability of F-15, F-35 and F-22. Supersonic Maneuverability is a measure of how agile of a plane is in Supersonic Speed at various height. Because the air density at different height, the Maneuverability will be greatly affected.
Why is there such a great difference between supersonic Maneuverability of F-15, F-35 and F-22?
Because F-22 has TVC that will enable it turn very effectively at high altitude and high speed, whereas, the effectiveness of traditional control surfaces of F-15, and F-35 will be much less effective at those high speed and high altitude.
Here is the 5G Maneuver Envelope. The Maximum Speed of a plane able to maneuver at 5G at various height.
As we can see, F-15, one of the most agile 4th gen. fighter in the world, could only pull a 5G Maneuver at Mach 0.8 at sea level, and at 32,000 ft, only Mach 0.7. No Supersonic Maneuverability at 5G over Mach 0.8. Basically, it could only fly pretty much in a straight line with a huge turn radius at higher speed.
Whereas, F-22 could pull 5G at nearly Mach 2 at the Maximum altitude of 65,000ft. At sea level, it could still able to reach Mach 1.3 while pulling a 5G turn.
Basically, sustained Supersonic Maneuverability is determined by Aerodynamics of the airframe, Power of the engine and structural strength of the airframe.
If you don't have outstanding Aerodynamics design, your air speed will quickly drop below supersonic during high G maneuvers. If you don't have a powerful engine in the first place, you can't do Supersonic Cruise without afterburner. If you turn on your afterburner in order to go supersonic, you will quickly run out of fuel. If your airframe isn't strong enough, your plane will fall apart at high G during Supersonic Maneuvering. If you have a very tough airframe, but a weak engine, you will be overweighted. And if you have a very powerful engine, but overweighted and have a lousy aerodynamics design, you will end up being clubbed like baby seals like F-35.
As if we can see, even the mightily powerful F-15 don't have much Supersonic Maneuverability, it is useless to talk about that for 4th Generation fighters, instead they concentrate on subsonic maneuverability. But Supersonic Maneuverability is such an awesome ability. F-15 and F-16 pilots said whenever F-22 goes into Supersonic, the fight is over. They can't follow it into those Supersonic speed without turning on the afterburner, and if they did, they would run out of fuel in minutes.
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