CEO of TEI gave an interview to DefenceTurkeymagazine. Some of the most important questions asked and the awnsers given I think:
DEFENCE TURKEY: Dear Akşit, you just mentioned that very high temperatures are reached in the combustion chamber. High temperature means the need for cooling on the one hand and the need for special materials on the other. Are the materials (such as titanium, nickel, steel, aluminum and composite) needed in the TEI-TF6000 Engine Project, especially in the hot region, domestically produced or outsourced? Has the desired level been reached within the scope of aviation engine materials development projects such as CEVHER and KÜLÇE, which were previously initiated by SSB and TEI?
prof. Dr. Mahmut F. AKŞİT: As TEI, we saw this need even before our first helicopter engine project started, so we started working with our own means, just like the TEI-TF6000 engine. Of course, it is not possible to expect everything from our state. The state gives many projects. As you already know, the number of projects supported by the SSB has increased significantly. Opportunities are also limited, it is not possible for them to support everything at all times. What are we doing? We start the technologies that we should definitely use beforehand. When it reaches a certain point, we ask for additional support from the SSB and so on. For example, we started the Single Crystal Turbine Blade Casting Process Technology studies before our TEI-TS1400 Turboshaft Engine Development Project. Afterwards, we turned it into an SSB R&D Project, and thanks to their support, we successfully poured it out for the first time in Turkey. Likewise, we started the CEVHER-1 and CEVHER-2 projects, which focus on material technologies. Now, for example, the second phase of CEVHER-2 begins. Here, too, we carry out R&D projects to produce in Turkey the strategic materials that we are gradually dependent on abroad.
DEFENCE TURKEY: So, are these two materials you mentioned being localized under the CEVHER-1 and CEVHER-2 Projects, which aim to develop materials used in aviation (including the engine) and production processes?
prof. Dr. Mahmut F. AKŞİT: Yes. Of course, they have different grades, there are a thousand and one types. The material developed for wing casting is Nickel super alloy, but it was developed for single crystal. There are also the materials we use for stator nozzles and vanes, for example. They are motionless, do not turn. They are also Nickel super alloy, but they are also made of other materials. As I said, they have different grades. When we say CEVHER-1 and CEVHER-2, we developed the most urgent and indispensable ones in the first stage. Now we have moved to the second stage with CEVHER-2. In the long term, we are following a strategy that will hopefully produce all the critical materials that our engine needs in our country. Let me give you the good news about alloys. As of now, we have developed the single crystal blade material in Turkey.
DEFENCE TURKEY: At the beginning of our conversation, Mr. Mahmut, you pointed out that the TEI-TF6000 is an engine designed for TEI to train the team and develop it as a talent on the way to the National Combat Aircraft (MMU/TF-X). But the end result will be an engine and it will have a development cost. On which platforms is TEI-TF6000 targeted to be used? For example, the KIZILELMA MIUS platform that comes to mind first?
prof. Dr. Mahmut F. AKŞİT:Let's put it this way, as we have said before for our TEI-TJ300 Turbojet Engine, TEI-TF6000 is also a project to gain experience and know-how. Think about it, we made TEI-TJ300 after TEI-TJ90 Engine. We did it for learning purposes. The TEI-TJ90 was a small engine with a radial compressor. We can almost say that it was our first jet engine. A small engine that powers the ŞİMŞEK High Speed Target Aircraft. TEI-TJ300 is specially designed with axial compressor. The reason is that all these military turbofan engines are axial compressors. TEI-TF6000 also has an axial compressor. We are making a springboard from there by adapting the know-how we developed there to a slightly larger scale. But we pay special attention when choosing the sizes of these intermediate products in order to use them somewhere. Our state has to earn something in return for this effort, right? For example, the TEI-TJ300 is an anti-ship missile engine. MIUS can use the TEI-TF6000 Engine, it is already in its power class, we have chosen it that way. Also, four of these engines can power one of our gunboats. It can also be used as a gas turbine that generates electricity… It produces a power that alone can meet the electricity of approximately 3,000-4,000 homes.
Entire interview here: