Physics of gust response mitigation in open-loop pitching manoeuvres
| dc.contributor.author | Sedky, Girguis | |
| dc.contributor.author | Gementzopoulos, Antonios | |
| dc.contributor.author | Andreu-Angulo, Ignacio | |
| dc.contributor.author | Lagor, Francis D. | |
| dc.contributor.author | Jones, Anya R. | |
| dc.date.accessioned | 2023-09-18T16:57:54Z | |
| dc.date.available | 2023-09-18T16:57:54Z | |
| dc.date.issued | 2022-07-01 | |
| dc.description.abstract | This paper experimentally investigates the flow field development and unsteady loading of three force-mitigating pitch manoeuvres during a transverse gust encounter. The manoeuvres are constructed using varying levels of theoretical and simulation fidelity and implemented as open-loop kinematics in a water towing tank. It is found that pitch actuation during a gust encounter results in two important changes in flow topology: (i) early detachment of the leading-edge vortex (LEV) and (ii) formation of an LEV on the pressure side of the wing upon gust exit. Each of the pitch manoeuvres is found to mitigate a significant portion of the circulatory contribution of the lift force while only manoeuvres with accurate modelling of the added-mass force are found to adequately mitigate the total lift force. The penalty of aerodynamic lift mitigation using pitch manoeuvres was a twofold increase in the pitching moment transients experienced by the wing for all cases. By quantifying changes in the vertical gust momentum before and after the encounter, lift-mitigating manoeuvres were found to reduce the disturbance to the gust’s flow field, thereby reducing the momentum exchange between the gust and the wing. | |
| dc.description.uri | https://doi.org/10.1017/jfm.2022.509 | |
| dc.identifier | https://doi.org/10.13016/dspace/gqf9-9svc | |
| dc.identifier.citation | Sedky, G., Gementzopoulos, A., Andreu-Angulo, I., Lagor, F., & Jones, A. (2022). Physics of gust response mitigation in open-loop pitching manoeuvres. Journal of Fluid Mechanics, 944, A38. | |
| dc.identifier.uri | http://hdl.handle.net/1903/30515 | |
| dc.language.iso | en_US | |
| dc.publisher | Cambridge University Press | |
| dc.relation.isAvailableAt | A. James Clark School of Engineering | en_us |
| dc.relation.isAvailableAt | Aerospace Engineering | en_us |
| dc.relation.isAvailableAt | Digital Repository at the University of Maryland | en_us |
| dc.relation.isAvailableAt | University of Maryland (College Park, MD) | en_us |
| dc.subject | separated flows | |
| dc.title | Physics of gust response mitigation in open-loop pitching manoeuvres | |
| dc.type | Article | |
| local.equitableAccessSubmission | No |