Investigation of hybrid-electric propulsion system applied on Cessna 172S aircraft

Abstract

In this study, hybrid-electric propulsion systems, which have become a focal point in aviation in recent years, were addressed. In order to see the effects of hybrid-electric propulsion systems on fuel consumption, greenhouse gas emissions and flight costs, five different flight times (60, 90, 120, 150, 180 min) and five different cruise altitudes (1200, 1800, 2400, 3000, 3600 m) were compared with conventional flights. The widely used Cessna 172S aircraft was taken as a reference for the conceptual applications in the study. As a result of the study, the hybrid-electric propulsion system achieved the highest fuel and cost savings of 15.1% and 14.2%, respectively, for 120 minutes flight time and 2400 m altitude, while the lowest fuel and cost savings of 9.7% and 9.1% were achieved for 60 minutes flight time and 1200 m cruise altitude. The highest CO2 reduction was 6.86 kg per hour for 120 minutes and 1200 m altitude flight, while the lowest CO2 reduction was 4.47 kg for 180 minutes and 3600 m altitude flight. It has been determined that flights with hybrid-electric configuration have advantages over conventional flights.

Keywords

• Hybrid-electric aircraft
• Conceptual desing
• Fuel consumption
• Electrified propolsion

References

1. [1] Flightpath 2050 Europe’s vision for aviation. Report of the high-level group on aviation research, European Union, Luxembourg, 2011.
2. [2] Suder K. Overview of the NASA environmentally responsible aviation project's propulsion technology portfolio. 48th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Atlanta, Georgia, US, 2012.
3. [3] Aigner B, Nollmann M, Stumpf E. Design of a hybrid electric propulsion system within a preliminary aircraft design software environment. Deutscher Luft- und Raumfahrtkongress, Friedrichshafen, Germany, 2018.
4. [4] Finger DF, Götten F, Braun C, Bil C. On aircraft design under the consideration of hybrid-electric propulsion systems. Asia-Pacific International Symposium on Aerospace Technology. Springer, Singapore, 2018. 1261-1272.
5. [5] Ye XIE, Savvarisal A, Tsourdos A, Zhang D, Jason GU. Review of hybrid electric powered aircraft, its conceptual design and energy management methodologies. Chinese Journal of Aeronautics, 2021; 34(4): 432-450.
6. [6] Friedrich C, Robertson PA. Hybrid-electric propulsion for automotive and aviation applications. CEAS Aeronautical Journal 2015; 6(2): 279-290.
7. [7] Koruyucu E. Mathematıcal analysis of the energy and environmental effects of hybrid (Piston Prop-Electric) light utility helicopter. PhD Thesis, Bilecik Seyh Edebali University, 2018.
8. [8] Hoelzen J, Liu Y, Bensmann B, Winnefeld C, Elham A, Friedrichs J, Hanke-Rauschenbach R. Conceptual design of operation strategies for hybrid electric aircraft. Energies 2018; 11(1): 217.

9. [9] Righi H. Hybrid electric aircraft. MSc Thesis, Mississippi State University, 2016.
10. [10] Hepperle M. Electric flight-potential and limitations, The Institute of Aviation on the NATO RTO Workshop, Lisbon, Portugal, 2012.
11. [11] Vratny PC, Hornung M. Sizing considerations of an electric ducted fan for hybrid energy aircraft. Transportation Research Procedia 2018; 29: 410-426.
12. [12] Iwanizki M, Arzberger MJ, Plohr M, Silberhorn D, Hecken T. Conceptual design studies of short range aircraft configurations with hybrid electric propulsion. In AIAA Aviation 2019 Forum, Dallas, Texas, US, 2019.
13. [13] Pornet C. Conceptual design methods for sizing and performance of hybrid-electric transport aircraft. PhD Thesis, Technische Universität München, Germany, 2018.
14. [14] Voskuijl M, Van Bogaert J, Rao AG. Analysis and design of hybrid electric regional turboprop aircraft. CEAS Aeronautical Journal 2018; 9(1): 15-25.
15. [15] Mariani L. Estimating the effects of electric propulsion for aircraft in terms of acoustic and atmospheric emissions, MSc Thesis, Politecnico University, Milano, Italy, 2019.
16. [16] Donateo T, Spedicato L. Fuel economy of hybrid electric flight. Applied Energy 2017; 206: 723-738.
17. [17] Van Bogaert J. Assessment of potential fuel saving benefits of hybrid-electric regional aircraft, MSc Thesis, Delft University of Technology, Netherlands, 2015.
18. [18] Webpage: https://northvolt.com/products/systems/voltblocks/ (Last access: Sept. 2021)
19. [19] Webpage: https://www.mgm-compro.com/electric-motor/25-kw-electricmotor/ (Last access: Sept. 2021)
20. [20] Webpage: https:// www.mgm-compro.com/brushless-motor-controllers/33 – kw - motor controllers / (Last access: Sept. 2021)
21. [21] Information Manual Skyhawk SP, Cessna aircraft company model 172S NAV III avionics option- GFC 700 AFCS, , Cessna Aircraft Company, Wichita, Kansas, USA, 2007.
22. [22] Hospodka J, Bínová H, Pleninger S. Assessment of all-electric general aviation aircraft. Energies 2020; 13(23): 6206.
23. [23] Turkey Electricity Generation-Transmission Statistics for 2019, 38-Graph III.I - Distribution of Turkey's electricity generation by sources in 2019, Webpage: https://www.teias.gov.tr/tr-TR/turkiye-elektrik-uretim-iletim-istatistikleri (Last accest: Sept. 2021)
24. [24] Turkish Greenhouse Gas Inventory 1990-2019, National inventory report for submission under the united nations framework convention on climate change, Tüik, April 2021.
25. [25] Webpage: https://www.tedas.gov.tr/#!tedas_tarifeler (Last accest: Sept. 2021)
26. [26] Operator’s Manual Lycoming O-360, HO-360, IO-360, AIO-360, HIO-360 & TIO-360 Series, 8th Edition, Part No. 60297-12, October 2005.