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7 results on '"Kolias, Ioannis"'

5. Performance modelling of an ultra-high bypass ratio geared turbofan

Author

Alexiou, Alexios, Aretakis, Nikolaos, Roumeliotis, Ioannis, Kolias, Ioannis, and Mathioudakis, Konstantinos

Subjects
Ultra-High Bypass Ratio, Geared Turbofan, Variable Geometry, Multi-point Design
Abstract

In this paper, the main modelling aspects for setting up an Ultra-High Bypass Ratio (UHBR) Geared Turbofan (GTF) engine performance model with Variable Pitch Fan (VPF) and/or bypass Variable Area Nozzle (VAN) are first described. Next, a multi-point design (MPD) structure is presented considering performance requirements and thermal, structural and aerodynamic constraints at top-of-climb, take-off and cruise conditions. Using the MPD approach, multi-parametric studies are then carried out to generate a design space of engine cycles according to the specified targets and limits which are representative of a UHBR GTF in a narrow body aircraft for short range applications with an Entry Into Service (EIS) of 2025.

Published
2017

7. Performance modelling of an ultra-high bypass ratio geared turbofan

Author

Alexiou, Alexios, Aretakis, Nikolaos, Roumeliotis, Ioannis, Kolias, Ioannis, and Mathioudakis, Konstantinos

Subjects
Ultra-High Bypass Ratio, Geared Turbofan, Variable Geometry, Multi-point Design, 7. Clean energy
Abstract

In this paper, the main modelling aspects for setting up an Ultra-High Bypass Ratio (UHBR) Geared Turbofan (GTF) engine performance model with Variable Pitch Fan (VPF) and/or bypass Variable Area Nozzle (VAN) are first described. Next, a multi-point design (MPD) structure is presented considering performance requirements and thermal, structural and aerodynamic constraints at top-of-climb, take-off and cruise conditions. Using the MPD approach, multi-parametric studies are then carried out to generate a design space of engine cycles according to the specified targets and limits which are representative of a UHBR GTF in a narrow body aircraft for short range applications with an Entry Into Service (EIS) of 2025.

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