TR Air-Force TF-X KAAN Fighter Jet

[MADDOG]

I think P0 was rushed for the elections. I expect major design changes, and the significant changes to dimensions are an early proof of this. Another proof is they will reveal P1 at the end of 2025, not in the middle. Meaning more changes have been done rather than continuing on with P0.

Sure dimensions change, and designs evolve. And yes, like many things in this country, timelines often get compressed due to political reasons. But P0’s production wasn’t rushed, what was rushed was its airworthiness certification for the maiden flight. The underlying design itself wasn’t premature. It had passed PDR (with CDR being around the corner), it was structurally sound.

The main reason P0 hasn’t conducted extensive flight testing is primarily due to systems limitations. The aircraft in its current state cannot sustain long-duration or high-envelope flights, not because the airframe can’t take it, but because its onboard subsystems aren’t fully integrated or mature. That’s why it makes far more sense to carry out deeper systems integration on P1, which is being developed with more time and less external pressure.

As for the airframe itself, the external fuselage design is largely mature but requires optimization, both aerodynamically and structurally. The more pressing refinement is on the structural side where detail design work is centered around the ribs, spars, and load paths, rather than wholesale changes to the OML. In MMU’s case, this makes sense. The aircraft is being built to integrate multiple subsystems being developed by different domestic companies. The structural layout has to accommodate that evolving internal architecture, which naturally leads to iterative refinement and not radical redesign.

 

[Hannibal]

You are so wrong on so many levels.

There weren't significant changes to dimensions. At least not the way you think. They updated brochure but that's for the P0. What's written in the new brochure is the correct dimensions for the P0, it isn't a new updated one for the P1.

Well, yesterday I just posted you the proof of vertical stabilisers being the same

Why update the brochure when the jet's dimensions will change again in one month? The brochure dimensions are for P1, not P0.

And they do not take into account the height of the cockpit when measuring the height of the aircraft. They take into account the vertical stabilizers.
If they dropped the height of Kaan by 1 meter, they must've changed the position of the vstabs. 1 meter is a massive decrease in height.

 

[Radko]

Why update the brochure when the jet's dimensions will change again in one month? The brochure dimensions are for P1, not P0.

And they do not take into account the height of the cockpit when measuring the height of the aircraft. They take into account the vertical stabilizers.
If they dropped the height of Kaan by 1 meter, they must've changed the position of the vstabs. 1 meter is a massive decrease in height.

I don't get how you are able to get so many things wrong.


The 21x14x6m dimensions were NEVER accurate to begin with, it was just the lazy media department not doing their job.

I posted the evidence of vertical stabilisers position being the same for both P0 and P1, look at my original post and try to understand what I explained there,

I remember about people talking about the vertical stabilisers and how they will be moved to the sides, instead of the current over the engine layout.

Well, whoever said that is wrong. Here is the proof:
View attachment 74667
More clearly this part:
View attachment 74668

As you can see, it is clearly the mountings for the vertical stabilisers, same as P0;
View attachment 74669

The first 2 are from the production of P1, you can go check Haluk Görgün's social media. Last one is from the production of P0.

Look at that little extensions (mountings for the vertical stabilisers) with pin holes in them, View attachment 74715

There you go, P1 and P0 has the same vertical stabiliser placement, and there is no need of a further discussion because it would not be factual to argue that they moved the vertical stabilisers.


Kaan's dimensions were never 21x14x6m btw, what's in the brochure is the dimensions for P0, what's funny is that you can also go and check it yourself by taking the F110 as your scale

 

[Quasar]

Concerning KF-21 remember once we were also almost involved in the project so I would not put the blame just on Indonesia for KF-21.

Azerbaijan, Pakistan, Indonesia and even possibly SA partnerships will come with their challenges yet economic, political and millitary rewards of Turning KAAN into a multi-national & regional project far exceeds the risks and challenges.

 

[Huelague]

Concerning KF-21 remember once we were also almost involved in the project so I would not put the blame just on Indonesia for KF-21.

Azerbaijan, Pakistan, Indonesia and even possibly SA partnerships will come with their challenges yet economic, political and millitary rewards of Turning KAAN into a multi-national & regional project far exceeds the risks and challenges.

Don’t forget Malaysia.

 

[IC3M@N FX]

It will soon be month May and there are still no signs of life for the revised prototype.

Next month we are already halfway through the year,
slowly some information should finally come or at least pictures.
The first prototype is not flying either...at least officially, which is very strange.

 

[Strong AI]

I want to add more information to this, because i find it interesting.

Also guys, vertical stab. is over the engines because of vortex generated by the aircraft. Engines are more seperated from eachother compared to F-22, so the v.stabs end up over the engine.

So let us start with what a vortex is.

In fluid dynamics, a vortex (pl.: vortices or vortexes) is a region in a fluid in which the flow revolves around an axis line, which may be straight or curved.

Vortex - Wikipedia

en.wikipedia.org

Do fighter aircraft benefit from vortices?

"Vortex generators are used to delay flow separation by creating streamwise vortices that transport high-momentum fluid into the boundary layer, thereby energizing it and making it more resistant to separation."

— Anderson, John D. "Fundamentals of Aerodynamics." 6th Edition, McGraw-Hill Education, 2016.

Flow separation

Fighter aircraft have been designed to fly and maneuver at high angles of attack and at high loading conditions. At these high angles of attack, the flow separates from the sharp leading edges of the wing and leading-edge extension (LEX) forming a strong vortical flow that maintains the stability of the aircraft.

To me it looks like that KAAN has chines.

Forward chines also act as leading edge root extensions (LERX) at low speeds and high angles of attack, generating a vortex flow over the inboard wing to stabilise the airflow and increase its speed locally, thus delaying the stall and also providing additional lift.

Chine (aeronautics) - Wikipedia

en.wikipedia.org

Do vortices have negative effects? (F-18 as an example)

However, the leading-edge vortices break down upstream of the vertical tails. The breakdown flow impinges upon the vertical tail surfaces causing severe structural fatigue and has lead to their premature fatigue failure, costing millions of dollars every year for inspections and repairs. The accurate prediction and analysis of the tail buffet problem remains a prime objective to improve the design and maneuverability of the new generation of fighter aircraft.

https://www.sciencedirect.com/science/article/abs/pii/S088997460200138X?via%3Dihub

Vertical tail buffeting at high angles of attack is a phenomenon associated with the impact of vortical flows generated by the aircraft on the fins. This poses a serious problem for both single- and twin-tail fighter aircraft from the point of view of combat maneuverability and structural integrity.

https://www.sciencedirect.com/science/article/abs/pii/S0376042100000038

So basically, the vertical stabilizers of KAAN are mounted on top of the engines to minimize tail buffeting.
Here are some examples of tail buffeting. (Take a closer look at the vertical stabilizers)

F-22 (You have to watch this on YouTube)

 

[Fatman17]

Turkey’s Kaan Fighter Development Gains Momentum

Source: Aviation Week
https://search.app/ZNY7S

Shared via the Google App

 

[Radko]

Turkey’s Kaan Fighter Development Gains Momentum

Source: Aviation Week
https://search.app/ZNY7S

Shared via the Google App
View attachment 74793 View attachment 74794

Thanks for sharing,


The next batch of prototypes and preproduction model aircraft will look very similar to the configuration of P0, “from a bystander’s point of view,” Demiroglu says. The most noticeable external change will likely be a more optimized inlet for supersonic flight.
Instead, many of the changes will be “under the skin,” Demiroglu says, including weight optimization and the installation of mission systems. The second batch of prototypes, P4, P5 and P6, will be more advanced and capable than the first trio


Well well well, who could have guessed

 

[duveil]

I want to add more information to this, because i am bored and i find it interesting.

So let us start with what a vortex is.

Vortex - Wikipedia

en.wikipedia.org

Do fighter aircraft benefit from vortices?

Flow separation
View attachment 74790

To me it looks like that KAAN has chines.
View attachment 74786

Chine (aeronautics) - Wikipedia

en.wikipedia.org

Do vortices have negative effects? (F-18 as an example)

https://www.sciencedirect.com/science/article/abs/pii/S088997460200138X?via%3Dihub

https://www.sciencedirect.com/science/article/abs/pii/S0376042100000038

So basically, the vertical stabilizers of KAAN are mounted on top of the engines to minimize tail buffeting.
Here are some examples of tail buffeting. (Take a closer look at the vertical stabilizers)

F-22 (You have to watch this on YouTube)

Thanks mate. This is the reason I come to this forum.

 

[Strong AI]

Thanks mate. This is the reason I come to this forum.

You're very welcome.

 

[what]

My personal highlight:

But TAI, he says, is open to different levels of involvement—either with Kaan, the Gokbey helicopter or the Anka UAV. As a result, Demiroglu is confident that the Kaan will secure an international development partner; geopolitics could force the hand of those countries and prompt them to make “bold decisions.”

“I do not know if [a Kaan partnership] will happen this year or next, but I am sure we will have it,” he says. “Once we do, everybody will know . . . that it will not be only one.”

 

[Oublious]

2 prototype are in assembly line, one off the prototype will fly end off the year and the other will begin off 2026 fly. Total ther will be 4 PT and they will fly extensively. We plan to deliver first fighter i 2028, end to deliver the fighter we are going to work hard.

 

[Strong AI]

We are on the trail of a love written in the sky.

#KAAN

https://twitter.com/i/web/status/1925477877388030192

 

[Fatman17]

 

[Huelague]

What is that plan, to produce ~500 Kaan till 2034?

 

[Huelague]

Or they mean the total number of planes (Kaan, Hürkus, Hürjet)?

 

[Fuzuli NL]

What is that plan, to produce ~500 Kaan till 2034?
View attachment 75291 View attachment 75291

500 Kaan, Hürjet and Hürkus combined!
Same goes for the other two columns.

 

[Huelague]

500 Kaan, Hürjet and Hürkus combined!
Same goes for the other two columns.

~1450 aircraft’s. That’s huge. And we are talking about aircraft’s only, not to mention other stuffs.
Have you read the current attention?: https://www.tusas.com/#wdLoad

 

[what]

TAI is focusing on mass production and not any new projects, or at least not announcing them publicly.
But still I would love to hear that they will produce something like GlobalHawk or the bigger version of Anka 3