0
Research Papers: Fundamental Issues and Canonical Flows

Experimental Aerodynamic Characteristics of a Compound Wing in Ground Effect

[+] Author and Article Information
Saeed Jamei

Faculty of Mechanical Engineering,
Marine Technology Center,
Universiti Teknologi Malaysia (UTM),
Skudai 81310, Johor, Malaysia
e-mail: jsaeed2@live.utm.my

Adi Maimun Abdul Malek

Faculty of Mechanical Engineering,
Marine Technology Center,
Universiti Teknologi Malaysia (UTM),
Skudai 81310, Johor, Malaysia
e-mail: adi@fkm.utm.my

Shuhaimi Mansor

Faculty of Mechanical Engineering,
Department of Aeronautical Engineering,
Universiti Teknologi Malaysia (UTM),
Skudai 81310, Johor, Malaysia
e-mail: shuhaimi@fkm.utm.my

Nor Azwadi Che Sidik

Faculty of Mechanical Engineering,
Department of Thermo Fluids,
Universiti Teknologi Malaysia (UTM),
Skudai 81310, Johor, Malaysia
e-mail: azwadi@fkm.utm.my

Agoes Priyanto

Faculty of Mechanical Engineering,
Marine Technology Center,
Universiti Teknologi Malaysia (UTM),
Skudai 81310, Johor, Malaysia
e-mail: agoes@fkm.utm.my

1Corresponding author.

Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received February 17, 2013; final manuscript received January 28, 2014; published online March 18, 2014. Assoc. Editor: Sharath S. Girimaji.

J. Fluids Eng 136(5), 051206 (Mar 18, 2014) (11 pages) Paper No: FE-13-1088; doi: 10.1115/1.4026618 History: Received February 17, 2013; Revised January 28, 2014

Wing configuration is a parameter that affects the performance of wing-in-ground effect (WIG) craft. In this study, the aerodynamic characteristics of a new compound wing were investigated during ground effect. The compound wing was divided into three parts with a rectangular wing in the middle and two reverse taper wings with anhedral angle at the sides. The sectional profile of the wing model is NACA6409. The experiments on the compound wing and the rectangular wing were carried to examine different ground clearances, angles of attack, and Reynolds numbers. The aerodynamic coefficients of the compound wing were compared with those of the rectangular wing, which had an acceptable increase in its lift coefficient at small ground clearances, and its drag coefficient decreased compared to rectangular wing at a wide range of ground clearances, angles of attack, and Reynolds numbers. Furthermore, the lift to drag ratio of the compound wing improved considerably at small ground clearances. However, this improvement decreased at higher ground clearance. The drag polar of the compound wing showed the increment of lift coefficient versus drag coefficient was higher especially at small ground clearances. The Reynolds number had a gradual effect on lift and drag coefficients and also lift to drag of both wings. Generally, the nose down pitching moment of the compound wing was found smaller, but it was greater at high angle of attack and Reynolds number for all ground clearance. The center of pressure was closer to the leading edge of the wing in contrast to the rectangular wing. However, the center of pressure of the compound wing was later to the leading edge at high ground clearance, angle of attack, and Reynolds number.

FIGURES IN THIS ARTICLE
<>
Copyright © 2014 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

(a) Rectangular wing and (b) compound wing

Grahic Jump Location
Fig. 2

Sketch of (a) rectangular wing and (b) compound wing

Grahic Jump Location
Fig. 3

Experimental setup in the low speed wind tunnel at the Universiti Teknologi Malaysia

Grahic Jump Location
Fig. 4

Repeatability of experimental test (a) lift coefficient and (b) drag coefficient

Grahic Jump Location
Fig. 5

Lift coefficient of rectangular and compound wing versus angle of attack (α) for different ground clearances (h/c) and Reynolds number (Re)

Grahic Jump Location
Fig. 6

Drag coefficient of rectangular and compound wing versus angle of attack (α) for different ground clearances (h/c) and Reynolds numbers (Re)

Grahic Jump Location
Fig. 7

Lift to drag ratio of rectangular and compound wing versus angle of attack (α) for different ground clearances (h/c) and Reynolds number (Re)

Grahic Jump Location
Fig. 8

Drag polar of rectangular and compound wing for different ground clearances (h/c) and Reynolds number (Re)

Grahic Jump Location
Fig. 9

Moment coefficient of rectangular and compound wing versus angle of attack (α) for different ground clearances (h/c) and Reynolds numbers (Re)

Grahic Jump Location
Fig. 10

Center of pressure of rectangular and compound wings versus angle of attack (α) for different ground clearances (h/c) and Reynolds numbers (Re)

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In