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Zaporizhzhya, Ukraine

Zhemanyuk P.D.,Motor Sich JSC | Petrik I.A.,Motor Sich JSC | Ovchinnikov A.V.,Kharkiv Polytechnic Institute | Seliverstov A.G.,Kharkiv Polytechnic Institute
Welding International | Year: 2016

Problems of welding rotor components made of creep-resisting titanium alloys are investigated. Comparative tests of the effects of fusion welding and rotational friction welding (FW) on the structure and properties of welded joints in titanium alloys are carried out. The experimental results show that welded joints produced by rotational FW have a structure identical to the structure of the parent metal, and the heat-affected zone does not form at all. The optimum conditions of FW of creep-resisting titanium alloys are determined. Irrespective of the initial type of structure, these conditions result in the mechanical properties of the welded joint at a level of 0.9 of the properties of the parent metal. © 2015 Taylor & Francis. Source

Agency: Cordis | Branch: FP7 | Program: CP-IP | Phase: AAT.2011.4.4-4. | Award Amount: 37.57M | Year: 2011

The ESPOSA project will develop and integrate novel design and manufacture technologies for a range of small gas turbine engines up to approx. 1000 kW to provide aircraft manufacturers with better choice of modern propulsion units. It will also deal with engine related systems which contribute to the overall propulsion unit efficiency, safety and pilot workload reduction. Through the newly developed design tools and methodologies for the engine/aircraft integration the project will also contribute to the improved readiness for new turbine engines installation into aircraft. New technologies and knowledge gained through the ESPOSA project will provide European general aviation industry with substantially improved ability to develop and use affordable and environmentally acceptable propulsion units and reliable aircraft systems minimizing operating costs, while increasing the level of safety. The new engine systems and engine technologies gained from ESPOSA should deliver 10-14% reduction in direct operating costs (DOC) and reduce significantly the pilot workload. The ESPOSA project is oriented on turbine engine technologies tailored for a small aircraft up to 19 seats (under CS-23/FAR23) operated on the scheduled and non-scheduled flights. The research work comprises performance improvements of key engine components, their improved manufacture in terms of costs and quality. New engine component technologies will be backed by novel modern electronic engine control based on COTS, pioneering the engine health monitoring for small engines and providing new more electric solutions for fuel and propeller control systems. Project activities will include extensive validation on the test rigs. The most appropriate technologies according to value/cost benefit will be selected and integrated into functional complexes and further evaluated on the engine test beds. The functionality of certain project outcomes will also be demonstrated and validated in-flight conditions.

Zhemanyuk P.D.,Motor Sich JSC | Petrik I.A.,Motor Sich JSC | Chigileychik S.L.,Motor Sich JSC
Welding International | Year: 2016

The possibilities and practical aspects of application of orbital welding for pipelines in aviation gas turbine engines are investigated. © 2016 Informa UK Limited, trading as Taylor & Francis Group Source

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