teşekkürler

Bu proje bizim için bir gurur kaynağı olan projedir. Bundan birkaç yıl önce GE USAF ile F-5 ve T-38'lerde kullanılan J85-GE5 art yakıcılı (=afterburner)motorların performansını arttırmak ve yakıt tasarrufu sağlamak üzere bir sözleşme imzalamıştır. Sözleşmeye esas olarak TEI-Tusaş Motor Endüstrisi A.Ş.'nin geliştirdiği yeni ejektör sistemi esas alınmıştır. Tasarım, araştırma, üretimin tamamı TEI'ye ait olan bu projenin amacı afterburner sonrası motor çıkışını yeniden dizayn ederek performans artışı sağlamaktır. TEI bu konuda çok başarılı olmuştur. Projenin en büyük müşterileri NASA ve USAF'tır. Tutarı 601 Milyon ABD Doları olan proje 10 yıl içinde tamamlanacak ve toplam 1202 J85 motoru yenilenecektir (upgrading). ABD'deki uygulamaları GE ve alt müteahhit olarak ALSTROM firmaları yapmaktadır.

TEI'nin tasarımı gereği üretilen prototipler USAF'a ait Edwards AFB'de denenmiş ve başarılı sonuçlar alınmıştır. Akabinde derhal uygulamaya geçilmiştir. THKv'de şu anda uygulanıp uygulanmadığını kesin olarak bilmiyorum. Ama önümüzdeki yıllarda F-5 ve T-38'ler uzunca bir süre kullanılacağı için bizde de kullanılacağına muhakkak gözüyle bakıyorum.

İsteyen arkadaşlar TUSAŞ-TEI interset sitesinde bu uygulamanın resimlerine ulaşabilirler.

En içten sevgi ve saygılarımla

Haluk SEVEL

Sizlere aşağıda bu konu ile ilgili iki yazıyı aynen sunuyorum. Yazılardan birincisi General Electric Press Center tarafından yayınlanmıştır. Bu yazıda TEI'nin başarılarından ne denli memnun olduklarını açıkca anlatmaktadırlar. Diğer yazı da Turkish Time'dan alınmıştır. Olay TEI genel müdürünün ağzından anlatılmaktadır.

1.Yazı:

USAF Awards GE $601 Million Contract For J85 Upgrade Kits
April 9, 2001 -- LYNN, Massachusetts - The U.S. Air Force (USAF) has awarded a 10-year, $601 million contract to GE Aircraft Engines (GEAE) to provide hardware upgrade kits for 1,202 J85-5 engines powering the USAF fleet of 509 T-38 "Talon" supersonic jet trainers.
The upgrade kits are being produced at GEÂ’s Lynn, Massachusetts, engine production facility, where the J85 engine family was first developed more than 40 years ago. Delivery of the upgrade kits is scheduled to begin later this year.
The J85-powered T-38 is the USAFÂ’s primary pilot training aircraft. The J85 upgrade is part of an overall modernization program designed to continue the service life of the T-38 aircraft through 2040.
The upgrade kit consists of an improved technology "spooled" compressor rotor and stator assembly, a single-piece cast mainframe, upgrade components for the high-pressure turbine section, an improved afterburner liner, and a new ignition system. The kit also includes a new exhaust ejector nozzle to achieve higher net thrust at takeoff and lower fuel burn throughout the aircraft flight envelope.
The new eight-stage compressor rotor assembly, which can be readily installed, will sharply reduce engine life-cycle costs through improved durability and lower parts count, and by allowing individual blade replacement without rotor disassembly.
GEAE estimates reductions in life-cycle costs from the upgrade kit, including significantly reduced maintenance hours, will exceed $500 million over the next 40 years.
"This is a huge win for the USAF and GE," said Tom Brisken, general manager of Military Engines Product Support at GEAE. "The collaboration over many years between the USAF and GE and its engine partners on this program has been outstanding."
Key program participants were ALSTOM in the United Kingdom, which teamed with GE engineers in designing the compressor rotor assembly and Tusas Engine Industries (TEI) in Turkey, which contributed to the new ejector nozzle design.
The J85 engine, which entered service in 1960, powers the T-38, F-5, T-2C, and A-37B. About 5,000 J85 engines are in active service and accumulate more than 900,000 flight hours annually powering aircraft in nearly 35 countries.

2.Yazı:

TEI J85 new ejector project

The development of the J85 Ejector System is one of them. We started this project in 1996 within our R&D activities mainly for our efforts of producing concrete projects within the frame of applications realised in computer-supported designing and computer-supported engineering. The purpose of the project is designing, developing, flight and land tests, certification, production and marketing of an ejector “nozzle” which will save fuel and enhance jet engines. This is one of the most important steps in the transition from physical production to know-how production. The designing of the J85 Engine Ejector prototype was shared between the engineers of TEI and GEAE. Prototype production was developed and completed by TEI; in 1998 land and flight tests were conducted and expected performance values were successfully achieved. In the middle of 1998, the qualification part of the design was completed; new design’s production was done by TEI in 2000 and after the last tests of the prototype, mass production started. In this project, production is intensive and ongoing. To date, a total of 107 ejector kits have been produced and delivered to our clients.

Bu yazıların tercümelerini en kısa zamanda sizlere sunmaya çalışacağım.

En içten sevgi ve saygılarımla