That is what you get when Kamov designs it.

I’m not sure they did – it doesn’t look like a Kamov.

LOL, the same Kamov who designed the Ka-27, probably the ugliest helicopter flying today?

Granted the Ka-60/62 looks pretty nice…

I can agree with both of that.

For the record – the presentation of patents and related factual material is far more interesting than hearing a bunch of blatantly biased deadbeats attempts to discuss things which they they know little or nothing about.

Did you even understand any of the patents, documents or links that Jo put in his posts. A even more pertinent question is: does Jo even really understand the material in his posts – a lot of the material was highly specialised and deep, you would need to be some sort of graduate metallurgist, materials science expert (Phd, doctorate, “Kanditat nauk” type of thing).
You see, I don’t think any real qualified scientist or graduate researcher would ever try to shove such complex esoteric material on to the webpages of an aviation enthusiasts’ website – they’ve got far too much respect for their own specialist knowledge, gained after years of hard study and financial hardship, to ever begin to believe that many people on the Key forums would have an inkling of what a particular patent was about.

But sure,there was no real harm in the contents of Jo’s posts, they may well have improved the total sum of knowledge of the PAK FA programme for anyone to learn from. What was objectionable was Jo’s style and manner…

Why has this thread become very unpleasant and a chore to read in recent months?

If you can actually see the code and customise the hardware as you desire, you can at least have your own people attempt to ensure it works as advertised.

If there really was a market for 5th generation combat aircraft flying on completely ‘open-source’ software, I’d have no doubt that Lockheed Martin would at the forefront of suppliers. But it’s unlikely that the USA military would be interested in such an aircraft specification – so almost by definition such an open-source aircraft would probably be an inferior ‘monkey-model’ version for the non-aligned export market, who knows?

Try comparing the payload-range equations of both aircraft. Also perhaps compare reliability and serviceability of both. How many Tejas have crashed since it first started flying?

The only people who are complaining about IP rights at the moment are the Russians – crying about their Flankers being copied.

I wonder why the IAF chose the F-414 to power their Tejas and not the RD-33 family? RD-33 is already in IAF and IN service, so plenty of commonality. The Indians obviously know something?