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Honeywell And HAL Celebrate 25 Years Of TPE331 Engine Production Print E-mail
Tuesday, 24 November 2009
Bangalore:  Honeywell and Hindustan Aeronautics Ltd. are celebrating 25 years of aerospace collaboration, including production and support of the TPE331-5 turboprop engine. The relationship between Honeywell and HAL began in 1984 when Honeywell first licensed production of TPE331 engines.

"Around 300 engines were envisaged for production in 3 phases of manufacture from the beginning. Engines were built from completely knocked down kits, semi knocked down kits and complete raw material manufacture in phase 3 within a span of 5 years from commencement of the operation," said Ashok Nayak, Chairman, Hindustan Aeronautics Limited (HAL).

"As our partner in India, HAL has built more than 225 TPE331 engines for the Indian military services, including the national Coast Guard, Navy and Air Force. They provide full maintenance and service on the aircraft engines at their facilities in Bangalore," said Robert A. Wilson, President Business & General Aviation - Honeywell. HAL now has an order-book for 30 more of these engines, which are currently under manufacture.

As announced in 2008, HAL also supplies Honeywell with TPE331-12JR engine parts to meet global demand.

"A new MoU was signed for the -12 engine on the 17th of April 2007 followed by a contract for the manufacture of 600 engines in three phases, signed on 18th April 2008," Mr. Nayak said.

"This programme involves localization of 97 castings and forgings 587 Honeywell make and buy items to drive down the cost.Honeywell and HAL jointly took up vendor supply chain development. The programme has also helped upgrade our quality and manufacturing systems to meet global requirements and standards. Through this programme, engine division acquired NADCAP approval on 27 special processes. There has been a saga of growth. There is a huge Honeywell team located in the engine division in Bangalore with many more experts coming in every now and then. The first two kits of the - 12 programme are nearing completion; could be around 95 % complete. We hope to dispatch them in the next 6 weeks, hopefully by the end of December," he added.

"This is a very small beginning we will have to achieve the phase 2 and the phase 3 engines, when we will be assembling the engine over here from parts manufactured in HAL and testing the engine and delivering an end usable product from HAL. Right now in the phase one we are just delivering a kit of parts. Some parts are manufactured here. We buy the rest of the components. A full engine kit of parts is being delivered to Honeywell in the phase 1 and the phase 2," he said.

"We are excited about this milestone of completing 25 years of successful TPE331 collaboration with HAL," said Anil P. Gupta, President, Honeywell India. "This is another reinforcement of Honeywell’s commitment to our partners and to grow in the country, and to service our customers and stakeholders in India and the world. India continues to be an important part of Honeywell’s global growth strategy as a manufacturing location, export hub and center of engineering and R&D excellence."

HAL builds engine production capability in 3 phases with Honeywell's TPE331

HAL's licensed production of TPE331 engines since 1984

"In the process of implementation of the programme, the country's first indegenously developed aero-engine facility got designed, installed and commissioned by HAL. The test bed was completely designed and set up by the Engine Test Bed Research and Design Center in Bangalore. Also for the first time there were number of test rigs for the engine accessories including an airflow checking facility which was designed and installed with the help of Garret turbine engine company engineers. By using these facilities the production of the engine commenced in 1985 with the kits of parts in the phase one," said Mr. Nayak.

"All the critical parts of the engine was manufactured by HAL and it included localization of around 50 castings and forgings form the foundry and forge division of HAL in Bangalore. Various manufacturing technologies were introduced into HAL for this programme. Complex technologies for machining of gears and shafts, turbine wheels, casings and housings, 5 axis milling of impellers were absorbed by HAL personnel in the process of producitonization of this engine. Special treatment processes such as chromizing, amalgamizing, selectron plating and photo chemical machining were introduced with this project. HAL grew and contributed to development and process improvement in several cases. Silicon diffusion coating, chromatizing of magnesium alloys are a few examples. This facilitated higher percentage of localization of parts for this engine," he added.

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