Radar: the aircraft has a very low radar signature against most types of radars.
Most radars in service around the world?
Most of the brand new radars entering service in Russia and being fitted to the new fighter aircraft.
Some critics will argue that low frequency (LF) radars like those created in the 1940s or 50s can detect stealth. This is actually true, however, LF radars are also very inaccurate.
The new radars entering Russian service that use low frequency don't have the accuracy problems of the radars from the 1940s and 1950s.
They may alert you of the presence of stealth aircraft, but not exactly where, the speed, heading etc. not enough info to target the aircraft.
new systems already in service can be sited with S-400 and can detect and track stealth targets with the accuracy to get the missiles close enough to the targets for their radars to get a lock.
LF radars are also confused by many things like, clouds, dust, smoke, birds, insects, all of these things will look like a target for LF radars.
Not many of those things flying at over 600km/h....
They are also ridiculously easy to jam, even by 1960 era jammers. imagine what the F-35's
AN/ASQ-239 advanced Barracuda jammer would do to it.
And what does using an active jammer do to your level of stealth?
Infrared: the F-35 has an advanced thermal management system that circulates fuel around the aircraft to reduce it's thermal signature. the heat is absorbed by the fuel, not enough to ignite the fuel but enough to make IR countermeasures like flares more effective.
Flares are ineffective against IIR seeking missiles like the new Morfei and upgraded R-73.
IIR seekers don't need hot targets and can target cold parts of the aircraft... including the canopy.
The F-35s engine nozzle may look more conventional than the F-22s flat thrust vectoring nozzle, but it is actually a product of the LOAN (low observable asymmetric nozzle) program, which reduces both radar and heat signatures.
Reduces is nice, but eliminates is necessary for stealth aircraft.
However the F-35's APG-81 AESA radar changes frequencies thousands of times every second making it very difficult for Passive receivers to track it down, this is called LPI capability or Low probability of intercept.
Broad band receivers that can monitor a wide range of frequencies at one time can detect a single point source emitting over a wide, random range of frequencies... and especially when on an X band radar the source seems to come from open empty space, such information becomes worth examining by L band radar and IRST.
The F-35 has some of the World's most advanced sensors
APG-81: a powerful AESA radar that is so advanced it can actually take a picture using nothing more than radar waves. This is called SAR mode.
AAQ-40 EOTS: an advanced optical camera that can zoom, identify and guide weapons to a target.
AAQ-37 DAS: 6 infra red cameras positioned around the aircraft that builds a 360 degree video of the aircraft then feeds it to the pilot's helmet. If the pilot looks down, he will not see the floor of the aircraft, he will see what the DAS camera located on the belly sees. If he looks behind, he will not see the back of his seat, he will see what the DAS camera behind the aircraft sees.
Synthetic Apature Radar mode is not new, and is commonly used for ground mapping.
MiG-35 will have all three systems mentioned above, and Su-35 will likely get an AESA radar soon enough.
Fusion: 4th gen fighters had a different monitor for their radar, a different one for their passive radar receiver, and a different one for the Infrared sensor. Some targets can be seen by the IR sensor, but cant be seen by the radar, some targets can be detected by the radar, but can't be seen by the IR sensor. the pilot had to figure out which was which and draw a conclusion.
The F-35's sensor fusion engine does this all for him. The pilot simply looks at his screen and sees what target is out there. It doesn't matter which sensor is detecting what, all of them are located in one screen.
1980s MiG-29 and Su-27 had fully integrated helmet mounted sight, IRST, and radar. The target detected by Radar or IRST appeared on the screen as a target no matter how it was detected.
On the MiG-23 target information was displayed in the HUD, with IRST and radar information combined.
Sensor fusion is not new.
Even when loaded with 50% more fuel than the F-16, the F-35's wing loading is still better.
Its thrust to weight ratio is identical to the Block 50's.
Late model F-16s are criticised for being a bit sluggish as weight was added but thrust was not increased.
This is the F/A-18's greatest kinematic strength. And it is what the Hornet is known and feared for in air-air combat.
Hornet known and feared? Really?
The F-35 will also enjoy High AOA abilities. Its flight control surface AOA limit is 50 degrees and has been tested to 73 degrees with ease, most fighters are limited to around 25 degrees AOA.
Thrust vector control on Su-35 and MiG-35 means no AOA limit.
It is important to note that F-16s and F/A-18s are still regarded as one of the best dogfighting aircraft in the World and still able to hold their own against the likes of Typhoons, Rafales, Flankers and even Raptors
Rubbish. A Flanker with full thrust vector control would kick the ass of any of the other aircraft listed.
Conclusion: the F-35 will still enjoy tremendous agility and acceleration, other planes might be able to offer better agility, but it will be marginal, as human pilots can only go up to a little over 9Gs. the F-35 can go beyond that. so it doesn't matter if your airplane can go 15Gs because no pilot will find that useful anyway.
At lower combat speeds the ability to turn starts to become critical because at low speeds the amount of air flowing over the control surfaces limits the rate of turn of any aircraft not fitted with TVC... and more importantly the risk of stalling suddenly becomes a real possiblity for any aircraft that does not have TVC.
specially as F-35 is not fast enough to escape from flankers.
Not only not fast enough to escape, but lacking the legs to keep running long.