Propeller - Wing Interaction using Rapid Computational Methods

Liu, C; Agostinelli, Christian; Allen, Christian B; Rampurawala, Abdul; Ferraro, Geraldine

doi:10.2514/6.2013-2418

Cited by 10 publications

(4 citation statements)

References 12 publications

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“…The described coupling method has recently been successfully applied by Agostinelli et al for the optimization of wing twist distribution on a flexible wing in cruise configuration 17 , and for the performance prediction of a propeller powered aircraft including wing flexibility effects 18 . In both those works, the aero-database is generated extracting the loads from RANS simulations.…”

Section: Iic Aero-structure Interfacementioning

confidence: 99%

A Rapid Approach to the Aerodynamic Design of a Flexible High-Lift Wing

Trapani

Savill

Kipouros

et al. 2014

32nd AIAA Applied Aerodynamics Conference

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The development and application of a rapid methodology for the optimization of HighLift configurations is here presented. The proposed framework includes a quasi-threedimensional method to simulate the aerodynamic performance, a rapid method for the estimation of the static aero-elastic effects, and two multi-objective optimization algorithms: the well-know NSGA-II and the innovative multi-objective Tabu Search. After an extensive validation study of both the aerodynamic simulation and the aero-structure coupling method, the framework is used to optimize the landing performance of the KH3Y configuration. The deployment settings of the full-span slat and of the two single-slotted flap elements, inboard and outboard, are identified as design variables. The maximum lift coefficient and the lift over drag ratio at the approach angle of attack are used as objective functions. Two optimization setups are executed to assess the influence of the wing flexibility on the revealed Pareto Front. In both cases the selected optimization algorithm has been able to improve the performance of the datum. Moreover, the results show the importance of considering aero-structure influences early on in the design process. Finally, parallel coordinate visualization techniques are used to analyze the peculiar Search Pattern revealed. NomenclatureK Stiffness matrix S Flexibility matrix u Displacements array Z Forces and moments array cd Drag coefficient cl Lift coefficient cl appr Lift coefficient at approach angle of attack L/D appr Lift to Drag ratio at approach angle of attack M Number of wing sections spanwise * EngD Researcher, School of Engineering, Centre for Propulsion. Student Member. g.trapani@cranfield.ac.uk

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Section: Iic Aero-structure Interfacementioning

confidence: 99%

A Rapid Approach to the Aerodynamic Design of a Flexible High-Lift Wing

Trapani

Savill

Kipouros

et al. 2014

32nd AIAA Applied Aerodynamics Conference

Self Cite

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“…The wing influences the aerodynamic performance of the propeller by inducing velocity at its disk [9], developing a slipstream [5], and increasing the efficiency of the propulsion [9,13]. In addition to the rigid wing, there are also a few papers available that address the flexible wing in the propeller/wing system [14][15][16]. This research focused on the aeroelasticity phenomenon affected by the propeller.…”

Section: Introductionmentioning

confidence: 99%

Influence of Aerodynamic Interaction on Performance of Contrarotating Propeller/Wing System

et al. 2022

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This paper gives a quantitative account of the influence of slipstream on the aerodynamic performance of a contrarotating propeller (CRP)/wing system, and compares it with the CRP and clean wing. To accurately evaluate the complex aerodynamic interaction, the unsteady Reynolds-averaged Navier–Stokes approach using the sliding mesh method is performed at a typical freestream velocity of 30 m/s. Four different critical parameters, including the freestream angle of attack (AoA), axial spacing between the front propeller (FP) and rear propeller (RP), number of blades, and rotational speed, are considered in the present work. The results show that the thrust coefficient, power coefficient, and propulsion efficiency of the CRP/wing system change sharply and the difference in amplitude between adjacent waves is large. In particular, the propeller slipstream has a significant impact on the lift–drag performance of the wing in the case of a nonzero AoA. The presence of a wing also increases the efficiency of propulsion due to the recovery of vortices. In the case of a small axial spacing, the thrust coefficient value of the FP is significantly smaller than that of the RP. However, when the axial spacing exceeds a certain value, the opposite relationship is obtained. When the rotational speed increases from 3695 RPM to 8867 RPM, the lift coefficient and drag coefficient of the wing gradually increase.

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“…Hunsaker and Snyder (2006) used lifting line method and blade element theory to predict the influence of slipstream on wing while the influence of wing on slipstream was ignored. Algorithm used by Agostinelli et al (2013) considers both of interactions and takes 2 min per calculation step, which is faster than classical methodologies. The computing time is decreased to 1 s in Ferraro et al (2014).…”

Section: Introductionmentioning

confidence: 99%

Real-time integrated turboprop take-off model under propeller-wing interaction

Wang

Huang

2019

AEAT

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Purpose The purpose of the paper is to build a real-time integrated turboprop take-off model which fully takes the interaction between diverse parts of aircraft into consideration. Turboprops have the advantage of short take-off distance derived from propeller-wing interaction. Traditional turboprop take-off model is inappropriate because interactions between diverse parts of aircrafts are not fully considered or longer calculation time is required. To make full use of the advantage of short take-off distance, a real-time integrated take-off model is needed for analysing flight performance and developing an integrated propeller-engine-aircraft control system. Design/methodology/approach A new integrated three-degree-of-freedom take-off model is developed, which takes a modified propeller model, a wing model and the predominant propeller-wing interaction into account. The propeller model, based on strip theory, overcomes the shortage that the strip theory does not work if the angle of propeller axis and inflow velocity is non-zero. The wing model uses the lifting line method. The proposed propeller-wing interaction model simplifies the complex propeller-wing flow field. Simulations of ATR42 take-off model are conducted in the following three modes: propeller-wing interaction is ignored; influence of propeller on wing is considered only; and propeller-wing interaction is considered. Findings Comparison of take-off distances and flight parameters shows that propeller-wing interaction has a vital impact on take-off distance and flight parameters of turboprops. Practical implications The real-time integrated take-off model provides time-history flight parameters, which plays an important role in an integrated propeller-engine-aircraft control system to analyse and improve flight performance. Originality/value The real-time integrated take-off model is more precise because propeller-wing interaction is considered. Each calculation step costs less than 20 ms, which meets real-time calculation requirements. The modified propeller model overcomes the shortage of strip theory.

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Propeller - Wing Interaction using Rapid Computational Methods

Cited by 10 publications

References 12 publications

A Rapid Approach to the Aerodynamic Design of a Flexible High-Lift Wing

A Rapid Approach to the Aerodynamic Design of a Flexible High-Lift Wing

Influence of Aerodynamic Interaction on Performance of Contrarotating Propeller/Wing System

Real-time integrated turboprop take-off model under propeller-wing interaction

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