Jul 1, 2010 - parametric studies and optimisation of the study engines. ⢠It is not an expert system, so it still requires the user to have a good under-standing ...
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
TERA2020 – Rationale, Objectives and Design Algorithm Konstantinos Kyprianidis, Cranfield University
Contributors: Bernhard Lehmayr, University of Stuttgart Alexios Alexiou, National Technical University of Athens Lei Xu, Chalmers University
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
Contents • What is TERA2020? • Which partners are involved? • How does TERA2020 work? • What kind of studies can TERA2020 be used for? • Conclusions and Outlook
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
What is TERA2020? • A multi-disciplinary tool for aero engine conceptual design. • Developed by universities in the EU collaborative projects VITAL, NEWAC and DREAM projects for over 6 years. • Incorporates significant feedback from industry. • Demonstrated as an effective tool in NEWAC for sensitivity analysis, parametric studies and optimisation of the study engines. • It is not an expert system, so it still requires the user to have a good under-standing of engine performance and design and knowledge of the capabilities of the new technologies available for each engine.
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
VITAL/NEWAC/DREAM TERA2020 – Core Partners
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
VITAL/NEWAC/DREAM TERA2020 – Contributions • Substantial amount of the knowledge used in TERA2020 has been generated in previous research projects.
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
NEWAC TERA2020 – Partners in SP1 and WP1.3
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
TERA2020 Algorithm
1 1)
PERFORMANCE
2)
WEI(CO)
3)
(WEI)CO
4)
HERMES
5)
HEPHAESTUS
6)
NOISE
7)
ECONOMICS
2 3
5 6 7
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
4
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
Methods and validity •
The developed tool is targeted towards identifying an appropriate design space where more complex and time-consuming tools could be utilised.
•
In many cases the modelling carried out is based on correlations that are available in the public domain or have been supplied by original equipment manufacturers within the European collaborative projects VITAL and NEWAC.
•
It is recognized that such correlations have a limited range of validity and are dependent on supporting engineering science base.
•
As an appropriate design space is defined, a more rigorous iterative design procedure would typically be set involving a large number of company specialists.
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
TERA2020 design parameters Main Design Parameters •
W2 (Fan mass flow)
•
Fan pressure ratio
•
Fan 2 pressure ratio (CRFC)
•
Typical Responses •
Engine weight
•
SFC and block fuel (business case)
W23 (Core mass flow)
•
LTO NOx and margin against CAEP/6
•
Booster/IPC pressure ratio
•
Cumulative noise margin
•
HPC pressure ratio
•
Production cost
•
HPT NGV cooling mass flow ratio
•
Maintenance DOC
•
T40 for take-off rating
•
T40 for climb rating
•
Direct operating costs
•
T40 for cruise rating (GTIR)
•
Low pressure turbine variable guide vane angle for take-off and cruise rating (GTIR)
Typical Constraints • FAR take-off field length and time to height
•
IC effectiveness for take-off rating (DDIC)
•
•
IC/ACAC effectiveness for climb rating
HPT metal temperature at take-off, climb and cruise (GTIR), LPT outlet temperature (GTIR) and time between overhaul
•
Compressor delivery temperature at take-off
•
HPC blade height
(DDIC, GTAC,GTIR) •
IC effectiveness for cruise rating (DDIC)
•
IC mass flow ratio (Wcold/Whot) (DDIC, GTIR)
•
Recuperator effectiveness (GTIR)
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
Engine optimisation process
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
What kind of studies can TERA2020 be used for? T30 [K] Climb time [min]
2 1 .5
974
Rel. fuel burn
-12 970
0.981 0.98 0.979 0.978 0.977 0.976 0.975 0.974 0.973 0.972 0.971 0.97 0.969 0.968 0.967
22
22 968
22 .5 970
-14
23
2 3 .5
23
9 72
968
966
-15 -6
97 4
2 2.5
972
-13 9 6 96
Core mass flow w vs. nominal in %
966
22
23 .
-5
5
-4
-3
Fan pressure ratio vs. nominal in %
•
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
TERA2020 may be utilised for a variety of studies sensitivity analysis, cycle optimisation, engine/aircraft matching… (more on next presentation!)
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
Conclusions • Overall TERA2020 has progressed well and has met its NEWAC targets. • TERA2020 is targeted towards identifying an appropriate design space where more complex and time-consuming tools could be utilised. Results produced can give useful insight on novel concepts. • TERA2020 enables technology assessment within collaborative precompetitive studies to be broadened to consider additional factors such as economics and environmental impact. • The tool is most useful for rapid optimization and ‘what if’ studies about a well worked-up design. • TERA2020 optimisation studies indicate further potential from the NEWAC innovative concepts in terms of block fuel (more on next presentation!) NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
Outlook • Further TERA2020 work to be carried out during the NEWAC prolongation • Work focuses on 3 new configurations – Geared Turbofan configuration with Intercooled Core for Long Range applications (GTICLR) – Geared Turbofan configuration with Active Core for Short Range applications (GTACSR) at higher OPR (ACAC as enabler) and with unconventional heat management aspects – Contra-Rotating turbofan configuration with Contra-Rotating core for Long Range applications (CRCRLR)
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
Back up slides
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
Optimisation methods available •
Archive based Micro Genetic Algorithm (AMGA)
•
Adaptive Simulated Annealing (ASA)
•
Downhill Simplex
•
Hooke-Jeeves
•
Large Scale Generalized Reduced Gradient (LSGRG)
•
Modified Method of Feasible Directions (MMFD)
•
Multifunction Optimization System Tool (MOST)
•
Multi-Island Genetic Algorithm
•
Neighborhood Cultivation Genetic Algorithm (NCGA)
•
Sequential Quadratic Programming (NLPQL)
•
Non-dominated Sorting Genetic Algorithm (NCGA-II)
•
Pointer Automatic Optimizer
•
Stress Ratio Optimizer
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
Engine performance module
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
Weight (Wei) and Cost (Co) module
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
Economic parameters and risk analysis •
•
Fuel price, exchange rates, interest rates and inflation vary over the years
Probabilistic methods are applied in TERA to consider the volatility of various economic parameters over a long time period. Source:
International Air Transport Association, 2010, http://www.iata.org/ Platts, 2010, http://www.platts.com/
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
European Workshop on New Aero Engine Concepts Munich, 30 June – 1 July 2010
TERA2020 integration Working with iSIGHT FD: The reality: Every predefined engine configuration implies immense effort to correctly define and link all variables.
NEWAC is an Integrated Project Co-funded by the European Commission within the Sixth Framework Programme (2002-2006) under Thematic Priority 4 Aeronautics and Space.
