Active Flow Control Devices for Wing Load Alleviation

Khalil, Khalid; Asaro, Salvatore; Bauknecht, André

doi:10.2514/1.c036426

Cited by 20 publications

(14 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ey have concluded that the velocity and location of injection reduces the vibration. Khalid et al [18], in his work on flow control devices opines that jet flow actuators address the need for change in the lift at a required moment coefficient. e active piezoelectric transducer actuator engine mount provided better isolation performance, which could lessen around 80% vibration and performs well at both higher and lower frequencies Sui et al [19].…”

Section: Introductionmentioning

confidence: 99%

Streamline Effect Improvement of Additive Manufactured Airfoil Utilizing Dynamic Stream Control Procedure

Srinath

Mukesh²,

Poojari

et al. 2022

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

In the era of fast transport, to create inventive stream ow management solutions that are capable of diminishing the aerodynamic drag of the vehicles, there is a need to modify the ow characteristics over the vehicle by deferring or expelling the position of the ow partition. e objective of this study involves the parameterized design of an airfoil utilizing the Bezier curve technique with the assistance of the simulation program. For ow regulations, synthetic jet modules are ingrained at di erent percentages of the chord to manage the stall characteristics. e parametrization system, combined with the stream control method, can give a much better insight into ow re-energization and pave some way for the reduction of the wake. Digital fabrication technique (3d printing or Rapid Prototyping method) is used to fabricate the end product for aerodynamic testing. e comparative outcome showed a reduction in drag at certain angles of attack due to the surface nish obtained. By comparing the results, the aerodynamic e ciency showed a signi cant rise of 13.05% at lower angles of attack when compressed gas was used in the synthetic jet closer to the frontier edge of the airfoil. Near the stall angle of attack, the coe cient of lift (Cl) and coe cient of drag (Cd) values showed no progress.

show abstract

Section: Introductionmentioning

confidence: 99%

Streamline Effect Improvement of Additive Manufactured Airfoil Utilizing Dynamic Stream Control Procedure

Srinath

Mukesh²,

Poojari

et al. 2022

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…On the actuator side of the active load alleviation system, both a classical approach based on primary control surfaces like trailing edge flaps, as well as a novel approach based on fluidic flow actuation devices are studied [27].…”

Section: Active Load Alleviationmentioning

confidence: 99%

Vehicle Technologies towards Sustainable and Energy Efficient Aviation

Friedrichs

Elham

Hühne

et al. 2022

AIAA SCITECH 2022 Forum

View full text Add to dashboard Cite

The overall mission is research and fundamental technological development for a sustainable future global air transport system. Following the vision of zero fossil fuel usage in aviation in a 2050 timeframe, reducing material and noise emissions while keeping air transport affordable on short to long range missions, SE²A focuses on significantly reducing the aircraft energy demand in combination with future energy storage and conversion technologies. This large design space makes preliminary system design and assessment based on models of different fidelity level indispensable. In this paper, the framework and research structure of the Cluster is described as well as a special focus on relevant and required vehicle technologies. This follows the need for a significant reduction of the mission energy to allow for future alternative propulsion systems and covers means for radical reductions in aircraft drag and dynamic loads, which in turn allow for reduced operating empty weight. An overall aircraft design methodology is employed for integration and assessment of technological progress. Such analysis is used to identify and quantify snowball effects and to prioritize technologies, but also to identify conflicting areas and requirements.

show abstract

“…The Active Flow Control (AFC) technology applied to airfoils is beginning to be of common use, then a considerable number of recent papers tackle this matter [1][2][3]. Parametric analysis is still the most common methodology employed to evaluate the effect of the AFC on airfoils, yet the use of optimizers is becoming popular to obtain the most appropriate AFC parameters in any given application [4,5].…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic Efficiency Improvement on a NACA-8412 Airfoil via Active Flow Control Implementation

Couto

Bergadà

2022

Applied Sciences

View full text Add to dashboard Cite

The present paper introduces a parametric optimization of several Active Flow Control (AFC) parameters applied to a NACA-8412 airfoil at a single post-stall Angle of Attack (AoA) of 15∘ and Reynolds number Re = 68.5×103. The aim is to enhance the airfoil efficiency and to maximize its lift. The boundary layer separation point was modified using Synthetic Jet Actuators (SJA), and the airfoil optimization was carried on by systematically changing the pulsating frequency, momentum coefficient and jet inclination angle. Each case has been evaluated using Computational Fluid Dynamic (CFD) simulations, being the Reynolds Averaged Navier–Stokes equations (RANS) turbulence model employed the Spalart Allmaras (SA) one. The results clarify which are the optimum AFC parameters to maximize the airfoil efficiency. It also clarifies which improvement in efficiency is to be expected under the operating working conditions. An energy balance is presented at the end of the paper, showing that for the optimum conditions studied the energy saved is higher than the one needed for the actuation. The paper clarifies how a parametric analysis has to be performed and which AFC parameters can be initially set as constant providing sufficient previous knowledge of the flow field is already known. A maximum efficiency increase versus the baseline case of around 275% is obtained from the present simulations.

show abstract

Active Flow Control Devices for Wing Load Alleviation

Cited by 20 publications

References 53 publications

Streamline Effect Improvement of Additive Manufactured Airfoil Utilizing Dynamic Stream Control Procedure

Streamline Effect Improvement of Additive Manufactured Airfoil Utilizing Dynamic Stream Control Procedure

Vehicle Technologies towards Sustainable and Energy Efficient Aviation

Aerodynamic Efficiency Improvement on a NACA-8412 Airfoil via Active Flow Control Implementation

Contact Info

Product

Resources

About