In an excercise withIndia- US airforce in 2005, US airforce was highly impressed eith Mig 21. What their officials said was that it was very hard to detect because of its small size though it is not designed to stealth. Tejas uses very high degree of composite, designed with stealth in mind, uses Y duct to conceal engine.This makes Tejas stealthier.
US and Indian Airforce joint excercise in 2005? you must be referring to Cope India exercises. 1st of all MiG-21 is not a Stealth design, you and I both know this. It Definitely has a lower RCS though as compared to full fledged metal body jets like SU-30 MKI/JF-17/MiG-29 but that here is mostly due to its smaller size as compared to these larger body planes. None of these planes are designed with keeping stealth in mind, neither they use composites or RAM.
But you are taking the RCS of an aircraft based on just the overall size and with use of some composites. Just because Tejas has composites, has a smaller size than J-20, that doesn't mean that it will have smaller RCS than J-20. RCS of any plane is dependent on several factors.
If I go by your logic that "
A Small size plane with some composites has lower RCS than a full fledged Stealth plane which has RAM, composites, Geometric Stealth" than I can definitely claim the following too, by your logic :
1. Tejas has lower RCS than F22
2. Tejas has lower RCS as compared to B-2
3. Tejas has less RCS as compared to F-35
And the list will go on and on...
Do far as F22 is concern, a mamoth effort has gone into designing it. Lots of aerodynamic is compromised. To compensate that, Highly powerful engines are placed into it.
F-22 may not be the most Manouverable plane in the world but it is definitely the most Manouverable plane in USAF Inventory.
This is because F-22 uses 2 Pratt and Whitney F-119 Engines and that too with thrust vectoring control Capability, it has TVC in 1 axis and it allows F-22 be more Manouverable and have a Higher turn rate as compared to non thrust vectoring engine Jets like F-15, F-35, F-16.
Yet, it is not made stealth by design. To overcome that, a state of art RAM paint was developed. Paint is higly sophisticated but gets damage in few flight which requires a very thick layer of painting after few flight. China has none this. Moreover, it has canards. Canards never lets plane to be stealth. I take every Chinese claim with a pinch of salt.
Le me after hearing this :-
F-22 is not Stealth by design? You are either crazy or you do not know anything about Aviation. 1st of all, do you know anything about a Stealth aircraft and how it makes it Self low observable?
Stealth aircraft are designed to avoid detection using a variety of technologies that reduce reflection/emission of radar, infrared, visible light, radio frequency spectrum, and audio, collectively known as stealth technology.
F-22 uses RAM, Composites, Stealthy engines, and most importantly"Geometric Stealth"!
In any stealth plane, more than 60% of the RCS reduction is achieved by Geometric Stealth.
READ THIS COPYPASTE (Very carefully read it and go through it)
“There are two major ways of making a military platform stealthier. One is geometric stealth and other is material stealth. In geometric stealth, the shape of the aircraft is designed at such angles so as to deflect away maximum radar waves thereby minimising its radar cross section. In material stealth, radar-absorbing materials are used in making the aircraft which will absorb the radio waves thus reducing the radar footprint.
(From this Geometric Stealth gives maximum percentage of RCS reduction)
So do you really think that F-22 has achieved all Stealth by only RAM and Composites? This is False.
How do you know that China does not have Advanced RAM? have you yourself gone there and checked for yourself what is the level of sophistication in Chinese RAM?
See you are talking things without bringing any proof, you claim that J-20 is a 3.5 gen plane and you also Claim that F-22 is not stealthy by design.
Canards Definitely means in a larger RCS but that doesn't mean that the moment you add Canards to a stealth plane than it will become non Stealth.
China made a copy of BMW car znd claimed that they made it in a cost less than half of BMW. However, in crash test, it scored 0/5 in safety rating. This explains the gap between Chinese quality and claim.
I have never heard of any such incident, and I doubt what you are saying here, unless you show me sources to back this claim of yours with regards that
"China made a copy of BMW car znd claimed that they made it in a cost less than half of BMW. However, in crash test, it scored 0/5 in safety rating"
Ciao....