PhD: Multidisciplinary propeller analysis and design for optimal energy efficiency, noise emissions, and structural performance in propulsive and regenerative conditions
Today’s rapid growth of air traffic puts increasing pressure on the environment, both in terms of climate change and noise hindrance. Electrification of …
- Kluyverweg, Delft, Zuid-Holland
- Tijdelijk contract / Tijdelijke opdracht
- Uren per week:
- 38 - 40 uur
- € 2325 - € 2972 per maand
Today’s rapid growth of air traffic puts increasing pressure on the environment, both in terms of climate change and noise hindrance. Electrification of aircraft can provide the necessary breakthrough to reduce this pressure. Despite the lower energy density of batteries compared to jet fuels, the increased design freedom inherent to aircraft designs with electric propulsion offers potential integration benefits that can be exploited to improve performance. Moreover, the electric architecture offers additional benefits such as for example energy regeneration during flight (similar to regenerative braking on electric cars).
This PhD project focuses on the multi-disciplinary numerical analysis of isolated and installed performance of propellers used in both propulsive and regenerative modes. Since the blade loading in regenerative mode will be opposite to the conventional propulsive mode, the aerodynamic, acoustic, and structural performance of the propeller will be markedly different in both modes of operation. Moreover, in regenerative mode the interaction effects with the airframe will also be opposite to the well-studied propulsive case. The fundamental scientific challenge is to understand and describe the aeroacoustics and vibroacoustics of propeller-wing interactions.
The research will be performed with high-fidelity numerical aerodynamic, aeroacoustic, and structural solvers to characterize the dominant physical phenomena involved in the propeller-wing interaction. The aerodynamic and structural analyses will be coupled to predict the vibrational response of the wing, and the associated structure-borne noise sources will be compared to the most relevant airborne noise sources. Using the developed understanding of the physical phenomena, the project will end with an optimization study in which optimal geometries are defined for maximum performance on the 3 disciplines. Besides geometrical modifications and structural tailoring, this may also include passive or semi-active control strategies to optimize blade deformations for maximal performance in the two different regimes of operation.
The work will be performed in the context of a large EU-funded project on hybrid-electric aircraft, and in collaboration with a colleague PhD candidate in the same project who will analyse regenerative propulsion with high-fidelity experimental methods. Besides the research activities, the PhD candidate will join the TU Delft Graduate School to increase disciplinary competences and be trained in transferable and research skills.
The candidate should have an MSc degree in Aerospace Engineering from a well-established university, or an MSc degree in related engineering disciplines such as applied physics, applied mathematics, or mechanical engineering with a proven experience (courses, projects, work experience) in the field of aerospace engineering. A combination of good mathematical/analytical skills and a strong interest in high-fidelity numerical simulations is required. Proven experience with such simulations and related data processing is advantageous for this position. Since an important part of research work is dissemination and collaboration, fluent communication skills in English, both written and orally, are of utmost importance. Female scientists are particularly encouraged to apply. A strict equal opportunity, gender-neutral recruitment procedure is implemented.
TU Delft offers a customisable compensation package, a discount for health insurance and sport memberships, and a monthly work costs contribution. Flexible work schedules can be arranged. An International Children’s Centre offers childcare and an international primary school. Dual Career Services offers support to accompanying partners. Salary and benefits are in accordance with the Collective Labour Agreement for Dutch Universities. You will have 232 hours of paid leave each year and in addition to your salary, at TU Delft you will receive an annual holiday allowance of 8% and a year-end bonus of 8.3% of your salary. As a PhD candidate you will be enrolled in the TU Delft Graduate School. The TU Delft Graduate School provides an inspiring research environment; an excellent team of supervisors, academic staff and a mentor; and a Doctoral Education Programme aimed at developing your transferable, discipline-related and research skills. Please visit www.tudelft.nl/phd for more information.
For more information about this position, please contact Dr.ir. T. Sinnige, phone: +31 (0)15-2789550, e-mail: T.Sinnige@tudelft.nl.