TR Attack & Utility Helicopter Programs

Kartal1

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When I watched this, I realized that the engine was ignited and engineers increased power up to the planned RPM but the production didn’t give the sound of engine and all delegation didn’t even realize the working engine. That’s the reason Erdoğan asked again to start ignition while engine was running. What we saw was the faces of test crew wth speeches like “engine didn’t work”. Really wierd things are happening.
Also after President Erdogan Mr. Aksit demanded the sound to be set higher at least two times so it is more obvious that the engine is working.
 

Constan

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mistakes happen everywhere. It's okay guys. Thanks to everyone worked on this project
 

Jntrq

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Put yourself in Mr. Aksit’s shoes. After working many years on the historic project of the country with blood, tears, sleepless night, on the roll out day of the project, one random guy says it does work. What would you do ?
 

mulj

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You are masters of drama :), enjoy the momemt and have some trust in people involved in project, i am sure they are more matire then forumers :)
 

BalkanTurk90

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Turkey need to protect its engineers in every important project .
Turkey have alot of enemies and they will try to kill and sabotage those projects
 

AzeriTank

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It is good to know that things are progressing. But wasn’t Hurjet going to fly in 2022 ? It seems it is delayed a bit!
ATAK2‘s maiden flight has been pulled forward, from 2024 to 2023. But in honesty, I had rather it was the other way round.
Atak2 is going to be definitely a monstrous helicopter. But unless we have an indigenous engine in the 3000hp range we will have similar problems we are having with the t-129 Pakistani order. 2023 first flight means serial production in 2025. There is no way TEI will have an indigenous engine by that time for this helicopter. TS1400 will be ready. But it is not powerful enough. Neither is the t700-TEI-701D they are building for the Blackhawks.
Same is true for the Hurjet too. If we try to sell it, I wonder if GE/US will allow it? Even worse If Caatsa is in place we may not even get the engines for our own use!
If they had produced Hurjet as it was originally designed with twin engines, TEI could have built a 9500lbf thrust turbofan engines from the TS1400 core, to be ready by 2025.
t700-TEI-701D ;)
 

Yasar_TR

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10 Ton Class General Purpose Helicopter that is under development by TAI. Helicopter; It will be designed to have a personnel capacity of 20+ people, a speed of 160 knots and a range of 1000 km, and will accommodate advanced technological mission and flight systems.
I would rather have 2 of these 10 ton helicopters with 2 x 3000HP engines than one Chinook CH-47. OK they may not be able to carry a humvee or a jeep under it’s belly like the CH-47. But it is easier to manage, cheaper to produce and maintain. Also smaller as a target. It can even be configured to use land and air attack missiles. If navalised can be a good addition to the TCG Anadolu.
 

Bogeyman 

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ATAK-II Heavy Class Attack Helicopter Project & the 3,000shp Turboshaft Engine Requirement​

During the visit of a group of 250 people consisting of students and Foundation donors to the Turkish Aerospace Industries (TUSAŞ) facilities on September 28, 2017, for the 30th anniversary of the Turkish Armed Forces Foundation (TSKGV), President & CEO of TUSAŞ, Prof. Dr. Temel KOTİL made the first public announcement of the ATAK-II Project and said, "The current ATAK helicopter is 5 tons. We also started a larger 8-ton ATAK Helicopter Project as a concept." Also, on October 3, 2017, about a week after KOTIL's announcement, President of Defense Industries (SSB) Prof. Dr. İsmail DEMİR made a speech at the Alp Aviation Helicopter Business Center Opening Ceremony and pointed out that the helicopter would be in the 6-ton class. DEMİR said, "I would like to announce that the design process of a heavier and more agile helicopter, which will be the big brother of the ATAK helicopter, has started." The first CGI renders of ATAK-II were released to the public by TUSAŞ at the end of October 2017.

At first, the empty weight of the ATAK-II was planned to be 6 tons with a maximum takeoff weight of 8 tons; thus, two 2,000 shaft-horsepower (shp) turboshaft engines would be able to provide sufficient power. This demand could be met through the T700-TEI-701D Turboshaft Engine manufactured under license at the TEI facilities with a 61% national contribution rate under the T70 Turkish Utility Helicopter Program (TUHP), as well as through a new version of the TS1400 that could generate 2,000shp with a design change (TS1400 can produce 1,660shp for 30 seconds in case of an emergency or a single engine shut down). In a statement he gave for ATAK-II in June 2018, TEI General Manager Mahmut AKŞİT stated that the T700-TEI-701D Engine could be used on a national platform after a series of design changes. The T700-TEI-701D Engine was able to meet the power requirements of ATAK-II, which was projected as 6-8 tons. Besides, Turkey also has the right to make changes to the engine. Therefore, it would be possible to use the engine in ATAK-II by making the necessary changes to the engine for ATAK-II and adding these changes to the license agreement after reaching a deal with General Electric.

The T129B Mk-II/ATAK-II Heavy Class Attack Helicopter Project Contract was signed between the Presidency of Defense Industries (SSB) and TUSAŞ on February 22, 2019, to meet the needs of the Turkish Land Forces Command. However, the weight of the ATAK-II Helicopter, which had been planned to have an empty weight of 6 tons and a maximum takeoff weight (MTOW) of 8 tons, was later updated to 10 tons. The T129B Mk-II Heavy Class Attack Helicopter, which is stated to have approximately twice the takeoff weight of the T129B Mk-I, is expected to perform its first test flight 5 years after the contract enters into force (To+60 months). With the latest changes, the T129B will take its place among the top-class attack helicopters, of which there are only two examples in the world (the USA, Boeing AH-64D/E Apache MTOW 10,432kg and Russia Kamov Ka-50/52 MTOW 10,800kg). The duration of the project is envisioned as 8.5 years (To+102 months), and it is planned to develop two different types of Heavy Class Attack Helicopter configurations in the 10-ton Class (Naval and Land) and to deliver three prototype helicopters to the SSB together with the Technical Data Package (TDP). The 3,000shp TS3000 turboshaft engines to be used in the serial production T129B Mk-II/ATAK-II Helicopter are currently being developed by TEI.

The main technical specifications of the T129B Mk-II/ATAK-II Heavy Class Attack Helicopter are given as follows:

10-ton class (with a MTOW of 12 tons),

2 Turboshaft engines,

Weapon stations: 6 x underwing hardpoints,

Maximum payload: 1,200kg, excluding launchers,

Tandem cockpit,

4-axis autopilot,

Service ceiling: 20,000ft (6.096m)

Maximum speed: 318km/h

Operational envelope: -40/+50 C

Armor: 12.7mm-resistant armored cockpit,

Laser-based Helicopter Obstacle Detection System (HETS) and Fire Control Radar (MİLDAR),

Hot & High Performance,

Resistant to environmental factors,

High forward speed limit,

Advanced electronic warfare and countermeasure systems,

High-caliber cannon (30mm), new generation 2.75-inch rockets, long-range and anti-tank missiles with different guidance systems and air-to-air missile systems.

The first mock-up of the 10-Ton Class ATAK-II Helicopter in its new form was exhibited at the IDEF‘19 Fair. During the press briefing held on May 2, 2019, at the fair, President & CEO of TUSAŞ, Temel KOTİL informed press members about the work and projects carried out by Turkish Aerospace and in response to one of our questions, he stated that a new engine was needed for the ATAK-II Helicopter and that there would be two engines on the helicopter, each with a capacity of approximately 3,000shp. KOTİL stated that although there is no project for the engine yet, that engine will also be built locally, but prototype helicopters will fly with COTS (commercial off-the-shelf) engines as in GÖKBEY T625.

In his statement published in a newspaper on May 8, 2019, Vice President of TUSAŞ R&D and Prototype Operations Prof. Dr. Fahrettin ÖZTÜRK stated that the ATAK-II will be a competitor to the AH-64 Apache and said, "We will equip the ATAK-II with new designs, technologies, and systems. We expect its maneuverability to be better than the others. It will be able to carry 1.2 tons of payload and will weigh 10 tons." The Boeing product, the AH-64 Apache Helicopter in the US Army inventory, has surpassed over 4.6 million flight hours with more than 1 million hours in combat environments since it first entered service in January 1984, and the company has delivered more than 2,400 Apache Helicopters to its customers in 17 countries around the world. The AH-64D/E Heavy Attack Helicopter has an empty weight of 5,165kg (11,387lb), primary mission gross weight of 6,838kg (15,075lb), loaded weight of 8 tons (17,650lb) and a maximum takeoff weight of 10,432kg (23,000lb). Powered by 2 T700-GE-701D turboshaft engines with each producing 2,000shp, the AH-64D/E Attack Helicopter has a maximum speed of 158 knots (293km/h), cruise speed of 143 knots (265km/h) and a service ceiling of 20,000ft (6,096m, with minimum payload). The AH-64D/E Apache Helicopter's thrust-to-weight ratio (TWR) is 384.6shp/ton, while the TWR of the 5-ton class T129A/B Mk-I is 537.5shp/ton (empty weight 2.9 tons, maximum takeoff weight 5.05 tons). The thrust-to-weight ratio of the 10-Ton Class ATAK-II, which is announced to be powered by two 3,000shp turboshaft engines, is expected to be 600shp/ton (it would be around 500shp/ton with 12-ton MTOW).

In his statement to Anadolu Agency on December 29, 2019, President & CEO of TUSAŞ Temel KOTİL announced that the ATAK-II Heavy Class Attack Helicopter would make its maiden flight in 3 years. In another statement made on April 21, 2020, KOTİL shared that a foreign 3,000shp engine will be used in the ATAK-II in the first phase but noted that the development of an indigenous engine is also on the agenda as part of the project.

Speaking at the radio show "Domestic and National" on TRT Radio 1 on December 4, 2020, the President & CEO of TUSAŞ, Temel KOTİL, said that, unlike the T129 ATAK Helicopter, whose gearbox, 20mm Gatling type cheek gun, and landing gear are procured from Italy, and the engines are procured from the USA, all parts of the ATAK-II Helicopter, including the gearbox and engine, will be locally manufactured and it will be even heavier than the US-made AH-64 Apache Helicopters. KOTİL said, "Our helicopter is 12 tons; it is heavier. It has a weapon load capacity of around 1,200kg, and this is around 300kg in ATAK. So it will be a bigger brother." Noting that ATAK-II is considered for the Turkish Land Forces and Gendarmerie General Command, as well as the Naval Forces (for TCG Anadolu LHD or future aircraft carrier), KOTİL said, "ATAK-II Heavy Attack Helicopter is planned to make its maiden flight on March 18, 2023, and to be delivered in 2025."

Preliminary studies for the 3,000shp TS3000 Turboshaft Engine to be used in the T129B Mk-II/ATAK-II Heavy Class Attack Helicopters started in the second half of 2019. TEI General Manager Faruk AKŞİT also conducted an interview with a TV channel on December 9, 2019 and announced that the work on the TS3000 had begun. The TS3000 Engine, which has been developed by TEI, is expected to also be used in the 10-Ton Class Utility Helicopter Project to be developed by TUSAŞ. The 10-Ton Class Utility Helicopter is expected to have a maximum speed of 170 knots and a cruise range of 1,000 km.

Using an indigenous turboshaft engine in the ATAK-II Helicopter will also increase the platform's export prospects globally. License restrictions for the engine were the most crucial obstacle in the export of the T129 Mk-I ATAK Light Attack and Tactical Reconnaissance Helicopter, which is powered by two 1,361shp (given as 1.373shp on TUSAŞ' website) LHTEC CTS800-4A Turboshaft Engines. In 2015, 2 T129 Mk-I exports to Turkmenistan could not be finalized due to engine export license issues. Similar problems have also been experienced in the Philippines Air Force T129B Project and the Pakistan Army’s T129B1/B2 Mk-I ATAK Project. The Philippines Air Force plans to procure 6 T129B helicopters, despite problems experienced in getting the export license for the engine from the U.S. Government in July 2020 the Philippine Department of National Defense (DND) has reaffirmed its plan to procure 6 T129 ATAK Helicopters from TUSAŞ but underlined that they would seek guarantees from Turkey about the platform’s export availability. Philippine Defense Minister Delfin LORENZANA disclosed that they have allocated a budget of US$258 Million for the procurement program. 30 T129B1/B2 Light Attack and Tactical Reconnaissance Helicopters were ordered for the Pakistan Armed Forces under a contract of approximately US$1.5 Billion signed on May 16, 2018 (10 T129B1 and 20 T129B2. The B1 helicopters would later be upgraded to the B2 level, and it may be possible to deliver all helicopters in B2 configuration as the project has been delayed). However, as of July 2020, the deliveries have not yet been started in the project due to the inability to obtain the export license required for the CTS-8004A engines from the U.S. Government.

On September 25, 2020, the President of Presidency of Defense Industries (SSB) Prof. İsmail DEMİR made an exclusive statement in our magazine and shared important information regarding the current status of the export license issue. He said: “So far, we have not experienced any drawbacks in the Pakistan engine export license process. Nor do we expect any problems in the process of the Philippines. However, especially in the Pakistan process, the U.S. authorities’ rejection of granting export licenses would cause a loss to all three parties, the U.S., Turkey and Pakistan. We believe in common sense and we hope there would not be any abdication of reason at this stage. The indications we have been receiving from the U.S. imply a positive approach. We have not received any adverse signals to date, but definitely we need to wait for the result.”



A Look at 3,000shp-Class Engine Solutions Available on the Market for the

ATAK-II Heavy Weight Attack Helicopter Program




As stated above, as in the T625 GÖKBEY Turkish Light Utility Helicopter (TLUH) Program, ATAK-II Heavy Class Attack Helicopter prototypes (3 units) are also planned to be powered by foreign COTS (commercial off-the-shelf) engines, and TEI product TS3000 engines are intended to be used in serial production helicopters.

As will be remembered, 10 CTS800-4AT Turboshaft engines were purchased from the Light Helicopter Turbine Engine Company (LHTEC), a joint venture between Rolls-Royce and Honeywell, for 4 (P0, P1, P2, and P3) prototypes to be manufactured under the T625 GÖKBEY Program. In parallel, under the Turboshaft Engine Development Project, the contract of which was signed on February 7, 2017, the TS1400 Turboshaft Engine with similar capabilities and power capacity is being developed by TEI. The TS1400 engine, which does not contain any parts subject to export restrictions (ITAR-Free), can be used in the T129B Mk-II ATAK Helicopters in addition to the T625.

According to open sources, the main 3,000shp (2,235kW) class turboshaft engine candidates and manufacturers that can be used in prototype helicopters under the ATAK-II Heavy Class Attack Helicopter Program are:

General Electric (GE) Aviation (T901, CT7-8 and YT706)

P&W / Honeywell ATEC Partnership (T900 / HPW3000 Engine)

Safran Helicopter Engines (Aneto Engine Family)

GE Aviation T901-GE-900 Engine & US Army ITEP

Note: You can attain the detailed information about the Heavy Attack Helicopter Engine configurations and pdf version of articles in our 102nd issue...

https://www.defenceturkey.com/en/issue/102

Conclusion

As summarized above, GE Aviation's T901-GE-900 engine, one of the 3,000shp turboshaft engines currently available in the market or in the delivery phase, is a new generation engine developed for the U.S. Army, so it is not expected to enter the export market in the near future. The ATEC T900-HPW-900 engine, which competed against the T901 in the ITEP tender and lost, is not currently in production. In this context, technical support may be obtained from ATEC for 3,000shp engine technology. As T901 and T900 options are out of the list, the only off-the-shelf foreign engine options available for use in ATAK-II Heavy Class Attack Helicopter prototypes are GE Aviation product 2,638shp (1,967kW) YT706-GE-700 engine, 3,000shp YT706-GE-700R engine, 2,300kW (3,070shp) CT7-8C/CT7-8A7 engine and Safran Helicopter Engines product 2,500shp Aneto-1K/1X engines.

As in the T901 example, the TS3000 engine development studies that were initiated by TEI in the second half of 2019 can be expected to focus on a T700-TEI-701D based (engine core) turboshaft engine with a single-spool design, which is being manufactured under license with 61% domestic contribution (maximum single-engine power 2,000shp for 2,5min, maximum power 1,994shp for 10min, intermediate power 1,902shp for 30min and maximum continuous power 1,716shp). Thus, it may be possible to develop a lighter and more cost-effective engine, while the development schedule can be reduced to more reasonable times.

Furthermore, after having the capability to manufacture an indigenous jet/gas turbine engine core under the TS1400 Turboshaft Engine Project, TEI will also be able to manufacture a larger engine by scaling this core. In terms of special process manufacturing capability, TEI became the first among 3,672 NADCAP accredited companies with 10 different special process groups and 52 process accreditations in October 2017. Having reached a certain level of proficiency in compressor technologies, which are very difficult to gain, TEI achieved a combustion chamber efficiency of over 98% at the TEI-TS1400. Like the LHTEC CTS800 engine, the TEI-TS1400 engine also has high-level weight and volume optimization. The engine consists of 2 Radial Compressors, a Reverse Flow Combustion Chamber, a two-stage High-Pressure Turbine (HPT), and a two-stage Power Turbine (PT). Therefore, unlike the T700, the TS1400 has a dual spool design (the compressor and high-pressure turbine are both split into two segments). Aimed to power Turkey's first Medium Range Anti-Ship Guided Missile, the TEI-TJ300 Turbojet Engine has a 4-stage axial compressor and a single-spool axial flow design, which generates 1300N thrust and approximate 400 shp. TEI currently has the technology to design and manufacture axial flow compressors and already has an indigenous, high mass flow rate centrifugal compressor design. The company had previously established the infrastructure to design, manufacture, and test 5-stage axial blisks with a complex geometry under GE's F136 and LEAP engine projects. Therefore, TEI has been working on the super-efficient centrifugal compressor design for about ten years. The most striking feature of the T700 engine, which is well known by TEI, is that it has a centrifugal High Pressure (HP) compressor after the axial compressor stages. The Low-Pressure Centrifugal Compressor in the TS1400 Engine is considered to have similar dimensions to the HP Centrifugal Compressor in the T700.

In conclusion, TEI is capable of developing and producing the TEI-TS3000 Turboshaft Engine (3,000 shp) with its knowledge and infrastructure in engine technologies as well as the Additive Manufacturing Techniques implemented in the production processes since 2013. I believe that the development and prototype engine production process will be completed by 2025, and the ATAK-II Heavy Attack Helicopter (expected to perform its maiden flight on March 18, 2023, with foreign engines) will use the national and indigenous TEI-TS3000 engines after a certain number of helicopters are delivered with foreign engines in the serial production phase, which is aimed to start in 2025.

I would like to thank my dear friend Kubilay YILDIRIM, who shared his technical knowledge about engines with me in the preparation of my article
 

Cabatli_TR

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ATAK-II Heavy Class Attack Helicopter Project & the 3,000shp Turboshaft Engine Requirement​

During the visit of a group of 250 people consisting of students and Foundation donors to the Turkish Aerospace Industries (TUSAŞ) facilities on September 28, 2017, for the 30th anniversary of the Turkish Armed Forces Foundation (TSKGV), President & CEO of TUSAŞ, Prof. Dr. Temel KOTİL made the first public announcement of the ATAK-II Project and said, "The current ATAK helicopter is 5 tons. We also started a larger 8-ton ATAK Helicopter Project as a concept." Also, on October 3, 2017, about a week after KOTIL's announcement, President of Defense Industries (SSB) Prof. Dr. İsmail DEMİR made a speech at the Alp Aviation Helicopter Business Center Opening Ceremony and pointed out that the helicopter would be in the 6-ton class. DEMİR said, "I would like to announce that the design process of a heavier and more agile helicopter, which will be the big brother of the ATAK helicopter, has started." The first CGI renders of ATAK-II were released to the public by TUSAŞ at the end of October 2017.

At first, the empty weight of the ATAK-II was planned to be 6 tons with a maximum takeoff weight of 8 tons; thus, two 2,000 shaft-horsepower (shp) turboshaft engines would be able to provide sufficient power. This demand could be met through the T700-TEI-701D Turboshaft Engine manufactured under license at the TEI facilities with a 61% national contribution rate under the T70 Turkish Utility Helicopter Program (TUHP), as well as through a new version of the TS1400 that could generate 2,000shp with a design change (TS1400 can produce 1,660shp for 30 seconds in case of an emergency or a single engine shut down). In a statement he gave for ATAK-II in June 2018, TEI General Manager Mahmut AKŞİT stated that the T700-TEI-701D Engine could be used on a national platform after a series of design changes. The T700-TEI-701D Engine was able to meet the power requirements of ATAK-II, which was projected as 6-8 tons. Besides, Turkey also has the right to make changes to the engine. Therefore, it would be possible to use the engine in ATAK-II by making the necessary changes to the engine for ATAK-II and adding these changes to the license agreement after reaching a deal with General Electric.

The T129B Mk-II/ATAK-II Heavy Class Attack Helicopter Project Contract was signed between the Presidency of Defense Industries (SSB) and TUSAŞ on February 22, 2019, to meet the needs of the Turkish Land Forces Command. However, the weight of the ATAK-II Helicopter, which had been planned to have an empty weight of 6 tons and a maximum takeoff weight (MTOW) of 8 tons, was later updated to 10 tons. The T129B Mk-II Heavy Class Attack Helicopter, which is stated to have approximately twice the takeoff weight of the T129B Mk-I, is expected to perform its first test flight 5 years after the contract enters into force (To+60 months). With the latest changes, the T129B will take its place among the top-class attack helicopters, of which there are only two examples in the world (the USA, Boeing AH-64D/E Apache MTOW 10,432kg and Russia Kamov Ka-50/52 MTOW 10,800kg). The duration of the project is envisioned as 8.5 years (To+102 months), and it is planned to develop two different types of Heavy Class Attack Helicopter configurations in the 10-ton Class (Naval and Land) and to deliver three prototype helicopters to the SSB together with the Technical Data Package (TDP). The 3,000shp TS3000 turboshaft engines to be used in the serial production T129B Mk-II/ATAK-II Helicopter are currently being developed by TEI.

The main technical specifications of the T129B Mk-II/ATAK-II Heavy Class Attack Helicopter are given as follows:

10-ton class (with a MTOW of 12 tons),

2 Turboshaft engines,

Weapon stations: 6 x underwing hardpoints,

Maximum payload: 1,200kg, excluding launchers,

Tandem cockpit,

4-axis autopilot,

Service ceiling: 20,000ft (6.096m)

Maximum speed: 318km/h

Operational envelope: -40/+50 C

Armor: 12.7mm-resistant armored cockpit,

Laser-based Helicopter Obstacle Detection System (HETS) and Fire Control Radar (MİLDAR),

Hot & High Performance,

Resistant to environmental factors,

High forward speed limit,

Advanced electronic warfare and countermeasure systems,

High-caliber cannon (30mm), new generation 2.75-inch rockets, long-range and anti-tank missiles with different guidance systems and air-to-air missile systems.

The first mock-up of the 10-Ton Class ATAK-II Helicopter in its new form was exhibited at the IDEF‘19 Fair. During the press briefing held on May 2, 2019, at the fair, President & CEO of TUSAŞ, Temel KOTİL informed press members about the work and projects carried out by Turkish Aerospace and in response to one of our questions, he stated that a new engine was needed for the ATAK-II Helicopter and that there would be two engines on the helicopter, each with a capacity of approximately 3,000shp. KOTİL stated that although there is no project for the engine yet, that engine will also be built locally, but prototype helicopters will fly with COTS (commercial off-the-shelf) engines as in GÖKBEY T625.

In his statement published in a newspaper on May 8, 2019, Vice President of TUSAŞ R&D and Prototype Operations Prof. Dr. Fahrettin ÖZTÜRK stated that the ATAK-II will be a competitor to the AH-64 Apache and said, "We will equip the ATAK-II with new designs, technologies, and systems. We expect its maneuverability to be better than the others. It will be able to carry 1.2 tons of payload and will weigh 10 tons." The Boeing product, the AH-64 Apache Helicopter in the US Army inventory, has surpassed over 4.6 million flight hours with more than 1 million hours in combat environments since it first entered service in January 1984, and the company has delivered more than 2,400 Apache Helicopters to its customers in 17 countries around the world. The AH-64D/E Heavy Attack Helicopter has an empty weight of 5,165kg (11,387lb), primary mission gross weight of 6,838kg (15,075lb), loaded weight of 8 tons (17,650lb) and a maximum takeoff weight of 10,432kg (23,000lb). Powered by 2 T700-GE-701D turboshaft engines with each producing 2,000shp, the AH-64D/E Attack Helicopter has a maximum speed of 158 knots (293km/h), cruise speed of 143 knots (265km/h) and a service ceiling of 20,000ft (6,096m, with minimum payload). The AH-64D/E Apache Helicopter's thrust-to-weight ratio (TWR) is 384.6shp/ton, while the TWR of the 5-ton class T129A/B Mk-I is 537.5shp/ton (empty weight 2.9 tons, maximum takeoff weight 5.05 tons). The thrust-to-weight ratio of the 10-Ton Class ATAK-II, which is announced to be powered by two 3,000shp turboshaft engines, is expected to be 600shp/ton (it would be around 500shp/ton with 12-ton MTOW).

In his statement to Anadolu Agency on December 29, 2019, President & CEO of TUSAŞ Temel KOTİL announced that the ATAK-II Heavy Class Attack Helicopter would make its maiden flight in 3 years. In another statement made on April 21, 2020, KOTİL shared that a foreign 3,000shp engine will be used in the ATAK-II in the first phase but noted that the development of an indigenous engine is also on the agenda as part of the project.

Speaking at the radio show "Domestic and National" on TRT Radio 1 on December 4, 2020, the President & CEO of TUSAŞ, Temel KOTİL, said that, unlike the T129 ATAK Helicopter, whose gearbox, 20mm Gatling type cheek gun, and landing gear are procured from Italy, and the engines are procured from the USA, all parts of the ATAK-II Helicopter, including the gearbox and engine, will be locally manufactured and it will be even heavier than the US-made AH-64 Apache Helicopters. KOTİL said, "Our helicopter is 12 tons; it is heavier. It has a weapon load capacity of around 1,200kg, and this is around 300kg in ATAK. So it will be a bigger brother." Noting that ATAK-II is considered for the Turkish Land Forces and Gendarmerie General Command, as well as the Naval Forces (for TCG Anadolu LHD or future aircraft carrier), KOTİL said, "ATAK-II Heavy Attack Helicopter is planned to make its maiden flight on March 18, 2023, and to be delivered in 2025."

Preliminary studies for the 3,000shp TS3000 Turboshaft Engine to be used in the T129B Mk-II/ATAK-II Heavy Class Attack Helicopters started in the second half of 2019. TEI General Manager Faruk AKŞİT also conducted an interview with a TV channel on December 9, 2019 and announced that the work on the TS3000 had begun. The TS3000 Engine, which has been developed by TEI, is expected to also be used in the 10-Ton Class Utility Helicopter Project to be developed by TUSAŞ. The 10-Ton Class Utility Helicopter is expected to have a maximum speed of 170 knots and a cruise range of 1,000 km.

Using an indigenous turboshaft engine in the ATAK-II Helicopter will also increase the platform's export prospects globally. License restrictions for the engine were the most crucial obstacle in the export of the T129 Mk-I ATAK Light Attack and Tactical Reconnaissance Helicopter, which is powered by two 1,361shp (given as 1.373shp on TUSAŞ' website) LHTEC CTS800-4A Turboshaft Engines. In 2015, 2 T129 Mk-I exports to Turkmenistan could not be finalized due to engine export license issues. Similar problems have also been experienced in the Philippines Air Force T129B Project and the Pakistan Army’s T129B1/B2 Mk-I ATAK Project. The Philippines Air Force plans to procure 6 T129B helicopters, despite problems experienced in getting the export license for the engine from the U.S. Government in July 2020 the Philippine Department of National Defense (DND) has reaffirmed its plan to procure 6 T129 ATAK Helicopters from TUSAŞ but underlined that they would seek guarantees from Turkey about the platform’s export availability. Philippine Defense Minister Delfin LORENZANA disclosed that they have allocated a budget of US$258 Million for the procurement program. 30 T129B1/B2 Light Attack and Tactical Reconnaissance Helicopters were ordered for the Pakistan Armed Forces under a contract of approximately US$1.5 Billion signed on May 16, 2018 (10 T129B1 and 20 T129B2. The B1 helicopters would later be upgraded to the B2 level, and it may be possible to deliver all helicopters in B2 configuration as the project has been delayed). However, as of July 2020, the deliveries have not yet been started in the project due to the inability to obtain the export license required for the CTS-8004A engines from the U.S. Government.

On September 25, 2020, the President of Presidency of Defense Industries (SSB) Prof. İsmail DEMİR made an exclusive statement in our magazine and shared important information regarding the current status of the export license issue. He said: “So far, we have not experienced any drawbacks in the Pakistan engine export license process. Nor do we expect any problems in the process of the Philippines. However, especially in the Pakistan process, the U.S. authorities’ rejection of granting export licenses would cause a loss to all three parties, the U.S., Turkey and Pakistan. We believe in common sense and we hope there would not be any abdication of reason at this stage. The indications we have been receiving from the U.S. imply a positive approach. We have not received any adverse signals to date, but definitely we need to wait for the result.”



A Look at 3,000shp-Class Engine Solutions Available on the Market for the

ATAK-II Heavy Weight Attack Helicopter Program




As stated above, as in the T625 GÖKBEY Turkish Light Utility Helicopter (TLUH) Program, ATAK-II Heavy Class Attack Helicopter prototypes (3 units) are also planned to be powered by foreign COTS (commercial off-the-shelf) engines, and TEI product TS3000 engines are intended to be used in serial production helicopters.

As will be remembered, 10 CTS800-4AT Turboshaft engines were purchased from the Light Helicopter Turbine Engine Company (LHTEC), a joint venture between Rolls-Royce and Honeywell, for 4 (P0, P1, P2, and P3) prototypes to be manufactured under the T625 GÖKBEY Program. In parallel, under the Turboshaft Engine Development Project, the contract of which was signed on February 7, 2017, the TS1400 Turboshaft Engine with similar capabilities and power capacity is being developed by TEI. The TS1400 engine, which does not contain any parts subject to export restrictions (ITAR-Free), can be used in the T129B Mk-II ATAK Helicopters in addition to the T625.

According to open sources, the main 3,000shp (2,235kW) class turboshaft engine candidates and manufacturers that can be used in prototype helicopters under the ATAK-II Heavy Class Attack Helicopter Program are:

General Electric (GE) Aviation (T901, CT7-8 and YT706)

P&W / Honeywell ATEC Partnership (T900 / HPW3000 Engine)

Safran Helicopter Engines (Aneto Engine Family)

GE Aviation T901-GE-900 Engine & US Army ITEP

Note: You can attain the detailed information about the Heavy Attack Helicopter Engine configurations and pdf version of articles in our 102nd issue...

https://www.defenceturkey.com/en/issue/102

Conclusion

As summarized above, GE Aviation's T901-GE-900 engine, one of the 3,000shp turboshaft engines currently available in the market or in the delivery phase, is a new generation engine developed for the U.S. Army, so it is not expected to enter the export market in the near future. The ATEC T900-HPW-900 engine, which competed against the T901 in the ITEP tender and lost, is not currently in production. In this context, technical support may be obtained from ATEC for 3,000shp engine technology. As T901 and T900 options are out of the list, the only off-the-shelf foreign engine options available for use in ATAK-II Heavy Class Attack Helicopter prototypes are GE Aviation product 2,638shp (1,967kW) YT706-GE-700 engine, 3,000shp YT706-GE-700R engine, 2,300kW (3,070shp) CT7-8C/CT7-8A7 engine and Safran Helicopter Engines product 2,500shp Aneto-1K/1X engines.

As in the T901 example, the TS3000 engine development studies that were initiated by TEI in the second half of 2019 can be expected to focus on a T700-TEI-701D based (engine core) turboshaft engine with a single-spool design, which is being manufactured under license with 61% domestic contribution (maximum single-engine power 2,000shp for 2,5min, maximum power 1,994shp for 10min, intermediate power 1,902shp for 30min and maximum continuous power 1,716shp). Thus, it may be possible to develop a lighter and more cost-effective engine, while the development schedule can be reduced to more reasonable times.

Furthermore, after having the capability to manufacture an indigenous jet/gas turbine engine core under the TS1400 Turboshaft Engine Project, TEI will also be able to manufacture a larger engine by scaling this core. In terms of special process manufacturing capability, TEI became the first among 3,672 NADCAP accredited companies with 10 different special process groups and 52 process accreditations in October 2017. Having reached a certain level of proficiency in compressor technologies, which are very difficult to gain, TEI achieved a combustion chamber efficiency of over 98% at the TEI-TS1400. Like the LHTEC CTS800 engine, the TEI-TS1400 engine also has high-level weight and volume optimization. The engine consists of 2 Radial Compressors, a Reverse Flow Combustion Chamber, a two-stage High-Pressure Turbine (HPT), and a two-stage Power Turbine (PT). Therefore, unlike the T700, the TS1400 has a dual spool design (the compressor and high-pressure turbine are both split into two segments). Aimed to power Turkey's first Medium Range Anti-Ship Guided Missile, the TEI-TJ300 Turbojet Engine has a 4-stage axial compressor and a single-spool axial flow design, which generates 1300N thrust and approximate 400 shp. TEI currently has the technology to design and manufacture axial flow compressors and already has an indigenous, high mass flow rate centrifugal compressor design. The company had previously established the infrastructure to design, manufacture, and test 5-stage axial blisks with a complex geometry under GE's F136 and LEAP engine projects. Therefore, TEI has been working on the super-efficient centrifugal compressor design for about ten years. The most striking feature of the T700 engine, which is well known by TEI, is that it has a centrifugal High Pressure (HP) compressor after the axial compressor stages. The Low-Pressure Centrifugal Compressor in the TS1400 Engine is considered to have similar dimensions to the HP Centrifugal Compressor in the T700.

In conclusion, TEI is capable of developing and producing the TEI-TS3000 Turboshaft Engine (3,000 shp) with its knowledge and infrastructure in engine technologies as well as the Additive Manufacturing Techniques implemented in the production processes since 2013. I believe that the development and prototype engine production process will be completed by 2025, and the ATAK-II Heavy Attack Helicopter (expected to perform its maiden flight on March 18, 2023, with foreign engines) will use the national and indigenous TEI-TS3000 engines after a certain number of helicopters are delivered with foreign engines in the serial production phase, which is aimed to start in 2025.

I would like to thank my dear friend Kubilay YILDIRIM, who shared his technical knowledge about engines with me in the preparation of my article

Congratulations to Mr. Ibrahim SUNNETÇİ for this informative wonderful article. @Defence Turkey has a unique place between defence enthusiasts.
 

Anmdt

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Atak II
•Maximum Take Off Weight: 12.000 kg
•Payload: 1.200 kg
•National TEI-TS3000 Engine
•Land and Marine variants
•First Flight: 18 March 2023
•Delivery: 2025
• Expected to carry 30mm cannon, AA missiles, ASW missiles and a laser weapon.
+Camo
+18 March (Naval victory day)
+The image was published above the sea surface,
It definitely will be navalized, maybe the first prototype will be directly developed as such.
 

Yasar_TR

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Atak 2 helicopter will be heavier and more powerful than Apache helicopters. In 2015 India purchased 22 Apache’s for 2.1 billion dollars.

Do we really need and can we really afford to pay over 100 million dollars for each of these helicopters? Two of them will make a Milgem Corvette. We have CWIS and RAM air defence systems to protect them.

It probably costs another 100 million to educate and train the 2 pilots we have for each helicopter. So we will be flying a 200million dollar asset. What protection do we give them against man pads and AD system missiles? We try to protect 10 million dollar tank with Akkor or Pulat and special ERA systems. Should we not give them a similar protection packet?

There should be Akkor type anti missile systems and ESSM/RAM style missiles to protect these gunships.
 

AzeriTank

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Atak 2 helicopter will be heavier and more powerful than Apache helicopters. In 2015 India purchased 22 Apache’s for 2.1 billion dollars.

Do we really need and can we really afford to pay over 100 million dollars for each of these helicopters? Two of them will make a Milgem Corvette. We have CWIS and RAM air defence systems to protect them.

It probably costs another 100 million to educate and train the 2 pilots we have for each helicopter. So we will be flying a 200million dollar asset. What protection do we give them against man pads and AD system missiles? We try to protect 10 million dollar tank with Akkor or Pulat and special ERA systems. Should we not give them a similar protection packet?

There should be Akkor type anti missile systems and ESSM/RAM style missiles to protect these gunships.
if USA sold it for 100million each doesnt mean you will make it for 100 million.. US likes to milk countries..
once you make all the equipment in your country, the real price of is what you pay for workers and for materials used on it which is not much...
but, using air to air missiles, it might help to protect Anadolu against incoming missiles or use lazer weapon with more powerful engine.. You might also use DRMF system to burn head of incoming missiles.. most of new technologies require big energy, so it will be good to have in hand just in case.. on the other hand, you can use same engine for Hurjet and so on...
When you offer all types of army technology, then those countries can rely on you.. be on your side... otherwise you will still keep their relation to make sure their nations are safe. same was for Azerbaijan even though we were closest nations..
 

Zafer

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Put yourself in Mr. Aksit’s shoes. After working many years on the historic project of the country with blood, tears, sleepless night, on the roll out day of the project, one random guy says it does work. What would you do ?
I would be happy and I would thank the guy but you are probably saying something else. :D
 

Saithan

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I would be happy and I would thank the guy but you are probably saying something else. :D
He meant to say, "doesn't work".

I'd be pissed because I'd know we'd already tested it at least hundred times or so. Personally I think the engineers should have leaked the videos of successful launches to defuse (fuck up) the tension of life performance.

It would have been awesome if RTE said, "I've already seen the leaked videos, it's working, good job, why're you wasting my time with a ceremony, go build the other engines, and mass produce this one, Pakistan and Philippines is waiting".
 

Yasar_TR

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if USA sold it for 100million each doesnt mean you will make it for 100 million.. US likes to milk countries..
once you make all the equipment in your country, the real price of is what you pay for workers and for materials used on it which is not much...
but, using air to air missiles, it might help to protect Anadolu against incoming missiles or use lazer weapon with more powerful engine.. You might also use DRMF system to burn head of incoming missiles.. most of new technologies require big energy, so it will be good to have in hand just in case.. on the other hand, you can use same engine for Hurjet and so on...
When you offer all types of army technology, then those countries can rely on you.. be on your side... otherwise you will still keep their relation to make sure their nations are safe. same was for Azerbaijan even though we were closest nations..
USA makes Abrams tank. With today’s money it comes to around 9.8 million dollars each. We make Altay with “cheap Turkish work force” . It comes to over 16 million dollars each. There are economies of scale here in play. But also a lot of middle men creaming the top. SOM and Atmaca missiles cost almost as much as the US counterparts. Atak129 helicopter costs 50 million dollars. For 3 Super cobra helicopters in 2011 we paid 111 million dollars. 37 million each. But with today’s money it will be over 40 million. So the real prices that Turkish MOD pays for these, are similar to US equivalents.
 

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