Off-design performance analysis of hybridised aircraft gas turbine
Journal article, 2019
Looking at the hybridisation of key operating points, boosting the cruise operation of the baseline geared turbofan is, however, detrimental to the engine efficiency as it is pushing the cruise operation further away from the energy optimal design point. Without major modifications to the engine design, the benefit of the hybridisation appears primarily at the thermomechanical design point, the hot-day take-off. With the constraint of the turbine blade metal temperature in mind, a 500kW positive hybridisation at hot-day take-off gave cruise specific fuel consumption (SFC) reduction up to 0.5%, mainly because of reduced cooling flow requirement. Through the introduction of typical electrical power system performance characteristics and engine performance exchange rates, a first principles assessment is illustrated. By applying the strategies discussed in the paper, a 3% reduction in block fuel burn can be expected, if a higher power density electrical power system can be achieved.
Author
[Person c1161c88-93d6-42f5-af5d-8d4c198897a9 not found]
[Person 778d06e3-6241-4999-a4b0-198f4c30e265 not found]
[Person cde487b9-f783-4803-b4b9-0fef0edc2d29 not found]
[Person 6f198d02-da88-4a62-95b7-befd10645539 not found]
[Person 92fe196a-a635-4a5d-a780-55b29d1634d3 not found]
Aeronautical Journal
0001-9240 (ISSN)
Vol. 123 1270 1999-2018Subject Categories (SSIF 2011)
Aerospace Engineering
Energy Engineering
Other Engineering and Technologies not elsewhere specified
DOI
10.1017/aer.2019.75