TY  - GEN
A1  - Mayntz, Joscha
A1  - Keimer, Jona
A1  - Tegtmeyer, Philipp
A1  - Dahmann, Peter
A1  - Hille, Sebastian
A1  - Stumpf, Eike
A1  - Fisher, Alex
A1  - Dorrington, Graham
T1  - Aerodynamic Investigation on Efficient Inflight Transition of a Propeller from Propulsion to Regeneration Mode
T2  - AIAA SCITECH 2022 Forum
N2  - This paper discusses a new way of inflight power regeneration for electric or hybrid-electric driven general aviation aircraft with one powertrain for both configurations. Three different approaches for the shift from propulsion to regeneration mode are analyzed. Numerical cal-culation and wind tunnel results are compared and show the highest regeneration potential for the "Windmill" approach, where the propeller blades are flipped, and rotation is reversed. A combination of all regeneration approaches for a realistic flight mission is discussed.
Y1  - 2021
U6  - https://doi.org/10.2514/6.2022-0546
N1  - AIAA SCITECH 2022 Forum, January 3-7, 2022, San Diego, CA & Virtual
PB  - AIAA
CY  - Reston, Va.
ER  - 
TY  - CHAP
A1  - Mayntz, Joscha
A1  - Keimer, Jona
A1  - Dahmann, Peter
A1  - Hille, Sebastian
A1  - Stumpf, Eike
A1  - Fisher, Alex
A1  - Dorrington, Graham
T1  - Electrical Drive and Regeneration in General Aviation Flight with Propellers
T2  - Deutscher Luft- und Raumfahrtkongress 2020
N2  - Electric flight has the potential for a more sustainable and energy-saving way of aviation compared to fossil fuel aviation. The electric motor can be used as a generator inflight to regenerate energy during descent. Three different approaches to regenerating with electric propeller powertrains are proposed in this paper. The powertrain is to be set up in a wind tunnel to determine the propeller efficiency in both working modes as well as the noise emissions. Furthermore, the planned flight tests are discussed. In preparation for these tests, a yaw stability analysis is performed with the result that the aeroplane is controllable during flight and in the most critical failure case. The paper shows the potential for inflight regeneration and addresses the research gaps in the dual role of electric powertrains for propulsion and regeneration of general aviation aircraft.
KW  - Propeller Aerodynamics
KW  - Flight Tests
KW  - Flight Mechanics
KW  - Electrical Flight
KW  - Inflight Regeneration, Recuperation
Y1  - 2022
U6  - https://doi.org/10.25967/530100
N1  - Deutscher Luft- und Raumfahrtkongress 2020, 1. - 3. September 2020, Online
PB  - DGLR
CY  - Bonn
ER  - 
TY  - CHAP
A1  - Schildt, Philipp
A1  - Marzocca, Pier
A1  - Braun, Carsten
A1  - Dahmann, Peter
A1  - Keimer, Jona
T1  - Effects of atmospheric excitation on vibration based condition monitoring methods for hybrid-electric aircraft propulsion systems
T2  - AIAC 2018: 18th Australian International Aerospace Congress: HUMS - 11th Defence Science and Technology (DST) International Conference on Health and Usage Monitoring (HUMS 2019): ISSFD - 27th International Symposium on Space Flight Dynamics (ISSFD)
Y1  - 2019
SN  - 9781925627213
SP  - 923
EP  - 928
ER  - 
TY  - GEN
A1  - Machado, Patricia Almeida
A1  - Dahmann, Peter
A1  - Keimer, Jona
A1  - Saretzki, Charlotte
A1  - Stübing, Felix
A1  - Küpper, Thomas
T1  - Stress profile and individual workload monitoring in general aviation pilots – an experiment’s setting
T2  - 23. Annual Meeting of the German Society of Travel Medicine, Coburg, 18.-19.9.2020
Y1  - 2020
U6  - https://doi.org/10.55225/hppa.156
ER  -