publication . Article . 2016

Effect of active Gurney flaps on overall helicopter flight envelope

Pastrikakis, V.A.; Steijl, R.; Barakos, G.N.;
Open Access
  • Published: 01 Aug 2016 Journal: The Aeronautical Journal, volume 120, pages 1,230-1,261 (issn: 0001-9240, eissn: 2059-6464, Copyright policy)
  • Publisher: Cambridge University Press (CUP)
  • Country: India
Abstract
<jats:title>ABSTRACT</jats:title><jats:p>This paper presents a study of the W3-Sokol main rotor equipped with Gurney flaps. The effect of the active Gurney is tested at low and high forward flight speeds to draw conclusions about the potential enhancement of the rotorcraft performance for the whole flight envelope. The effect of the flap on the trimming and handling of a full helicopter is also investigated. Fluid and structure dynamics were coupled in all cases, and the rotor was trimmed at different thrust coefficients. The Gurney proved to be efficient at medium to high advance ratios, where the power requirements of the rotor were decreased by up to 3.3%. Ho...
Subjects
free text keywords: Aerospace Engineering, Engineering, business.industry, business, Flight envelope, Rotor (electric), law.invention, law, Aerodynamics, Stall (fluid mechanics), Airfoil, Thrust, Control theory, Gurney flap, Aeronautics
Funded by
EC| IMESCON
Project
IMESCON
Innovative Methods of Separated Flow Control in Aeronautics
  • Funder: European Commission (EC)
  • Project Code: 264672
  • Funding stream: FP7 | SP3 | PEOPLE
22 references, page 1 of 2

20Cheng, R. P. and Celi, R., “Optimum two-per-revolution inputs for improved rotor performance,” Journal of Aircraft, Vol. 42, No. 6, 2005, pp. 1409-1417.

21Gagliardi, A. and Barakos, G. N., “Analysis and design of a flap-equipped low-twist rotor for hover,” Journal of Aircraft, Vol. 46, No. 1, 2009, pp. 74-84.

22Lorber, P., Hein, B., Wong, J., and Wake, B., “Rotor Aeromechanics Results from the Sikorsky Active Flap Demonstration Rotor,” AHS International , Vol. 1, 2012, pp. 553-568.

23Pastrikakis, V. P., Steijl, R., and Barakos, G. N., “Computational Aeroelastic Analysis of a Hovering W3 Sokol Blade with Gurney Flap,” Journal of Fluids and Structures, , No. 1763, 2014.

24Dehaeze, F. and Barakos, G. N., “Hovering rotor computations using an aeroelastic blade model,” Aeronautical Journal , Vol. 116, No. 1180, 2012, pp. 621-649.

25Dehaeze, F. and Barakos, G. N., “Mesh deformation method for rotor flows,” Journal of Aircraft, Vol. 49, No. 1, 2012, pp. 82-92.

26Dehaeze, F. and Barakos, G. N., “Aeroelastic CFD computations for rotor flows,” 37th European Rotorcraft Forum, Vergiate and Gallarate, Italy, 2011, pp. 143-162.

27Steijl, R., Barakos, G., and Badcock, K., “A framework for CFD analysis of helicopter rotors in hover and forward flight,” International Journal for Numerical Methods in Fluids, Vol. 51, No. 8, 2006, pp. 819-847.

28Steijl, R. and Barakos, G., “Sliding Mesh Algorithm for CFD Analysis of Helicopter Rotor-Fuselage Aerodynamics,” International Journal for Numerical Methods in Fluids, Vol. 58, 2008, pp. 527-549. [OpenAIRE]

29Barakos, G., Steijl, R., Badcock, K., and Brocklehurst, A., “Development of CFD Capability for Full Helicopter Engineering Analysis.” 31st European Rotorcraft Forum, 2005, Florence, Italy, 2005.

30Osher, S. and Chakravarthy, S., “Upwind schemes and boundary conditions with applications to Euler equationsin general geometries,” Journal of Computational Physics, , No. 50, 1983, pp. 447-481.

31Van Albada, G. D., Van Leer, B., and Roberts, W., “A comparative study of computational methods in cosmic gas dynamics,” Astron. Astrophysics, Vol. 108, 1982, pp. 76.

32Jameson, A., “Time Dependent Calculations Using Multigrid, with Applications to Unsteady Flows Past Airfoils and Wings,” 10th Computational Fluid Dynamics Conference, Honolulu, HI , 1991, AIAA-91-1596. [OpenAIRE]

33Steijl, R. and Barakos, G., “A Computational Study of the Advancing Side Lift Phase Problem,” Journal of Aircraft, Vol. 45, No. 1, 2008, pp. 246-257.

34Woodgate, M. and Barakos, G. N., “Rotor Computations with Active Gurney Flaps,” 38th European Rotorcraft Forum, Amsterdam, Netherlands, No. 54, 2012.

22 references, page 1 of 2
Powered by OpenAIRE Research Graph
Any information missing or wrong?Report an Issue