high lift
Recently Published Documents


TOTAL DOCUMENTS

1651
(FIVE YEARS 286)

H-INDEX

39
(FIVE YEARS 6)

Aerospace ◽  
2022 ◽  
Vol 9 (1) ◽  
pp. 43
Author(s):  
Robert Valldosera Martinez ◽  
Frederico Afonso ◽  
Fernando Lau

In order to decrease the emitted airframe noise by a two-dimensional high-lift configuration during take-off and landing performance, a morphing airfoil has been designed through a shape design optimisation procedure starting from a baseline airfoil (NLR 7301), with the aim of emulating a high-lift configuration in terms of aerodynamic performance. A methodology has been implemented to accomplish such aerodynamic improvements by means of the compressible steady RANS equations at a certain angle of attack, with the objective of maximising its lift coefficient up to equivalent values regarding the high-lift configuration, whilst respecting the imposed structural constraints to guarantee a realistic optimised design. For such purposes, a gradient-based optimisation through the discrete adjoint method has been undertaken. Once the optimised airfoil is achieved, unsteady simulations have been carried out to obtain surface pressure distributions along a certain time-span to later serve as the input data for the aeroacoustic prediction framework, based on the Farassat 1A formulation, where the subsequent results for both configurations are post-processed to allow for a comparative analysis. Conclusively, the morphing airfoil has proven to be advantageous in terms of aeroacoustics, in which the noise has been reduced with respect to the conventional high-lift configuration for a comparable lift coefficient, despite being hampered by a significant drag coefficient increase due to stall on the morphing airfoil’s trailing edge.


2022 ◽  
Author(s):  
Case P. Van Dam ◽  
Sai B. Mothukuri ◽  
Seyedeh Sheida Hosseini ◽  
Edward White ◽  
Lisa Brown ◽  
...  

2022 ◽  
Author(s):  
Pia Eichhorn ◽  
Felix Fritzsche ◽  
Flávio Silvestre
Keyword(s):  

2022 ◽  
Author(s):  
Masashi Kashitani ◽  
Nguyen T. Duong ◽  
Masato Taguchi ◽  
Kazuhiro Kusunose

2022 ◽  
Author(s):  
Aravind Balan ◽  
Michael A. Park ◽  
Stephen L. Wood ◽  
William K. Anderson ◽  
Kevin Jacobson

2022 ◽  
Author(s):  
Frederic Alauzet ◽  
Francesco Clerici ◽  
Adrien Loseille ◽  
Cosimo Tarsia-Morisco ◽  
Julien Vanharen

2022 ◽  
Author(s):  
Christopher Colletti ◽  
Arvin Shmilovich ◽  
Abdollah Khodadoust

2022 ◽  
Author(s):  
Gabino Martinez-Rodriguez ◽  
Timothy T. Takahashi
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document