TR UAV/UCAV Programs | Anka - series | Kızılelma | TB - series

[Zafer]

Yes and No!
Most of the thrust is produced by the fan. In a turbofan, the thrust it produces very much relies on the amount of air that by passes the engine core. Modern engines like the one used by the A320 neo, the Pratt and Whitney PW1000G has a by pass ratio of 10:1. That means, for every 1 part of air that goes through the engine core, 10 parts of air goes through the by pass.

As you can see here, the fan makes most of the engine. The actual core is much thinner and smaller.

How it works is simple. A force of same magnitude can be produced by giving a huge mass of air low acceleration according to Newton. This does not only improve the fuel efficiency, it also reduces the chance of thrust losses during different flight regimes. The air that goes through the combustion is mainly used to run the compressors to keep the engine going. Very little of it actually produces the forward thrust. That is why it is sometimes called as residual thrust.
At optimum conditions core may produce only 15% of the total thrust available.
But as the altitude and the speed increases and the rarified cold air thrust decreases too. Engine core’s contribution to thrust at this instance may be as high as 25%.

Thanks, but:
Bypass ratio can go as high as 24;1
Engine diameter can go as high as 4 meters, currently at 3.6 meters.
But hot portion being zero is out of question, contrary to what was claimed before.

 

[Era_shield]

No, I can %100 confirm that Ukraine doesn't have single-crystal technology. If designed with the same dimensions I expect TF-6000 to produce up to %25 more thrust than Al-322.

Yep, АИ-322 has directionally solidified blisks.

 

[Spook]

 

[Yasar_TR]

Thanks, but:
Bypass ratio can go as high as 24;1
Engine diameter can go as high as 4 meters, currently at 3.6 meters.
But hot portion being zero is out of question, contrary to what was claimed before.

Exactly! That is what I meant. It may look like a “residual” amount of hot thrust not worth mentioning and even though “most“ of the thrust is coming from cold air thrust, you can not discard the thrust provided by the hot core. Zero hot portion thrust is never going to happen. Even in helicopter engines where thrust is converted to torque, there could be around 5% thrust coming from hot core exhaust.

 

[Combat-Master]

View attachment 27779

Source

Akinci uses AI-450TD engines with 15hp more power at cruise altitude and 50hp more at max continuous power: http://motorsich.com/eng/products/aircraft/tr/ai-450s/

AI-332F is planned to be integrated into Ukraine's Jet powered UCAV aswell

 

[Yasar_TR]

AI-332F is planned to be integrated into Ukraine's Jet powered UCAV aswell
View attachment 27862

AI-25 engine used in Albatros L-39 plane has a given life cycle of 4000hours. OK it is not really pushed hard. It powers a trainer aircraft. It has a never go above speed of 980km/hr. And a maximum top speed of 750km/hr. So it is well protected from sustained extreme uses.
I wonder how this engine will fare when pushed in combat manoeuvring.
We really need our own engines with single crystal blades that can be pushed hard.

 

[Hexciter]

According to a presentation made yesterday by Ukraine, 2 types of turbofan engines will be used in MIUS:

1⃣ AI-25TLT for MIUS A
2⃣ AI-322F for MIUS B

https://twitter.com/i/web/status/1426141793016590341

 

[Hexciter]

STM Defence’s BOYGA Rotary Wing Unmanned Aerial Vehicle Carrying Mortar Ordnance

https://twitter.com/i/web/status/1426108210637938691

 

[TheInsider]

Ukraine uses super alloys in their blades. Russian Saturn AL31 engines were the same. They only started using single crystal blades in their “F” class engines , like AL31F and AL41F.
Using single crystal does not solve all the problems though. The blade design has to be correct with the right cooling canals introduced in to the blades and more importantly the quality of the coating used to withstand extreme heat.
But with smaller diameter cores, these engines should be easier to manufacture.
We have however shown we can successfully produce single crystal blades for not only TS1400 but larger diameter T700 engine as well.

No, they use directionally solidified blades made from superalloys. No real single crystal capability. Russian will use single crystals in izdeliye-30(next-generation engine of the Su-57) but they are having big problems. The project has seen delay after delay. Cracking the single-crystal tech is not easy. TR did a tremendous job in that field.

 

[TheInsider]

According to a presentation made yesterday by Ukraine, 2 types of turbofan engines will be used in MIUS:

1⃣ AI-25TLT for MIUS A
2⃣ AI-322F for MIUS B

https://twitter.com/i/web/status/1426141793016590341

Mius cant take off from the LHD Anadolu with Al-25TLT even with afterburner. Mius will either get lighter or will be limited to ground bases with Al-25TLT configuration. AL-322F version can operate from LHD with an MTOW of ~5000kg without any problem.

 

[Yasar_TR]

No, they use directionally solidified blades made from superalloys. No real single crystal capability. Russian will use single crystals in izdeliye-30(next-generation engine of the Su-57) but they are having big problems. The project has seen delay after delay. Cracking the single-crystal tech is not easy. TR did a tremendous job in that field.

AL-31F was designed to use single crystal blades for its turbines, but problems with implementing the process for production meant it was changed over to directionally solidified ones with improved cooling techniques in the early series engines. I expect at some point one of the later series AL-31FP introduced single crystal blades.

 

[TheInsider]

As I said Russians haven't introduced any single-crystal blades up to today. All of the Russian products including the most recent ones use directionally solidified superalloys. That is the reason why Russian engines need more maintenance and have worse overhaul periods(MTBO-Mean Time Between Overhauls).

Believe me, If Russians one day manage to manufacture a working single crystal blade they will be showing it to the world as we did.

 

[Combat-Master]

According to a presentation made yesterday by Ukraine, the maximum range of MIUS with satellite communication is expected to be 2,000 km.

https://twitter.com/i/web/status/1426161805525716998

 

[TheInsider]

540nm mission range. It is lower than I expected. I was expecting a 600+nm mission range.

 

[Hexciter]

According to a presentation made yesterday by Ukraine, the maximum range of MIUS with satellite communication is expected to be 2,000 km.

https://twitter.com/i/web/status/1426161805525716998

The Akinci’s commication range presented as 5000km. A higher data speed needed for MIUS which explains the decreased range in MIUS. In another way, MIUS has less endurance compared to Akinci and because of this extended range of comm. is not needed.

 

[Yasar_TR]

As I said Russians haven't introduced any single-crystal blades up to today. All of the Russian products including the most recent ones use directionally solidified superalloys. That is the reason why Russian engines need more maintenance and have worse overhaul periods(MTBO-Mean Time Between Overhauls).

Believe me, If Russians one day manage to manufacture a working single crystal blade they will be showing it to the world as we did.

I can’t believe that they still haven’t perfected single crystal blade technology.
Apparently they are still in the development stage. According to some sources AL55 will have single crystal blades. Chinese have taken RD93 and produced WS13 with single crystal blades. They too are having problems. But WS13 out performs RD93.
Current engines mainly use directionally solidified superalloys.
Third one down PS90A2 engine actually use single crystal blades. But this engine was developed in cooperation with Pratt&Whitney who were the first to develop working single crystal blades. (Probably supplied blades directly from P&W)
Some of the Russian engines that use latest tech:
ВК-2500 ЖС-26
ПС-90А ЖС-26 directionally solidified
ПС-90А2 ЖС-36 Single-crystal blades
АИ-222-25 ? directionally solidified
D-30KP ЖС-6U equiaxed structure
D-30F6 ЖС-6U equiaxed structure

HP LP
AL31F ЖС-26 directionally solidified ЖС-6U equiaxed structure
RD-33 ЖС-26 directionally solidified ЖС-6U equiaxed structure

 

[Agha Sher]

Why should we take this Ukrainian presentation as precise. I mean how would they know? They could just be talking bs in order to brag about their invovlement in MIUS and Akinci

 

[Philips]

Why should we take this Ukrainian presentation as precise. I mean how would they know? They could just be talking bs in order to brag about their invovlement in MIUS and Akinci

https://twitter.com/i/web/status/1425856808300777476

At the International Defense Investment Forum, dedicated to the development of the defense industry in Ukraine until 2030, a representative of "Baykar" spoke about high-tech Turkish UAVs and opportunities for strategic cooperation

 

[Saithan]

@Nilgiri they’re talking about stuff that is your specialty

 

[TheInsider]

The Akinci’s commication range presented as 5000km. A higher data speed needed for MIUS which explains the decreased range in MIUS. In another way, MIUS has less endurance compared to Akinci and because of this extended range of comm. is not needed.

Wrong. It has nothing to do with comms range. You can still fly in circles without a SATCOM. Akıncıs minimum speed is 130knots and its endurance is 24 hour. 130knot=240.5km/h 240.5*24=5772km. If you take bingo fuel into account, it has a 5000km range and 2500km mission radius.