Regarding this 42000lbf thrust GUCHAN palaver:
Let us look at what the most prominent factors are in a Turbofan that matters related to higher thrust.
Basically and most commonly you can increase thrust of a turbofan engine by:
1. increasing airflow.
a) To do that yo can increase rotational speed of engine, ie RPM. But that would result in excessive wear and could cause engine to collapse if pushed to extreme revs. Even If it doesn’t collapse straight away the engine life will be exponentially reduced.
b) You can increase fan diameter to increase air flow. But this doesn’t seem to be the case in Guchan.
c) You can increase engine diameter to allow more air to be pushed through the core. But this is not the case here.
2. increase TIT. The higher the energy released from nozzle the higher the thrust obtained. But for a given engine, there are limits to how high you can go with TIT. Material science too has limits for a given engine diameter. Also high TIT means more fuel burnt.
3. Bypass ratio. More air through bypass channels will increase thrust. But this means a lot more than the 0.68:1 ratio quoted for this engine.
When TEI is struggling with these details how on earth the people in MOD R&D overcame these difficulties?
A department of Turkish MOD, set up 12-13 years ago for R&D purposes, with no manufacturing base, that started to show itself only last 3-4 years, comes up with a turbofan engine that looks like a F110 copy and claim to have attained 42000lbf thrust level from that engine. Yet there are no video proof of that happening.
If you are coming up with such an ostentatious and arguable claim, you have to bring to the table proofs of your claim.
We believed them last time with the Hayalet and Gazap bombs; becuase they provided the related video proofs of the field and lab tests they carried out for these munitions.
So where are the proofs for Guchan and Yildirimhan?