Thanks for the corrections sid.. and they are good answers btw.
I had no idea about the Yak 141 and i just read up about it on wiki
(learn something new everyday)
It does look very similar to the JSF (so i wonder about the first supersonic VSTOL claim of the JSF), however the propulsion is different, single engine + lift fan Vs multiple engines . The unique aspect of the JSF is the one engine and shaft driven fan that produces 20K lbs of thrust, which as i remember is more than the harrier in total and almost as much as the LCA. But as far as the program goes the engine has reportedly not been a source of problems for the JSF. The problems have been in the integration and software for all the different modes and the sensor fusion. A lof of problems have been due to the heat generated by the onboard avionics.
F22: Developed as a pure air superiority fighter and the A2G modes were slapped on later to try and justify the high costs of the plane. Although the spin was that they were similar (f22 and f35) and it would make it easier, they were supposedly very different and the 3 versions in one made the complexity very high, stealth was also compromised due to the tradeoffs of the 3 in 1 design.
Yes you do have a point, but, that gives more credence to what i was saying that with all the know how that the US has, they are still having a horrible time with the JSF, so its a bit unfair to criticize the LCA as delayed and all without giving a thought to the whole picture. Let us not label the LCA as a failure simply because it is delayed, it is a good airplane and in the words of someone who has flown many fighters in the IAF and the LCA (through a good friend of mine) 'It handles beautifully and it would be a good day when it comes into service".
Lets hope that the LCA is finally accepted and sucessful in the IAF and let us get back to the radar discussion.
I will try to explain in as few words as possible.
vcsekhar wrote:F117: This was a pure bomber, very bad aerodynamically and could only carry a couple of LGB's, not supersonic, did it even have a radar? This really had not much to do with the JSF. The JSF is a quantum jump from the F117.
vcsekhar wrote:The STOVL design was completely new and had never been tried before, so that was another big risk. Overweight was again due to trying to make too many things common between the 3 versions.