Wing root
The wing root is the part of the wing on a fixed-wing aircraft or winged-spaceship that is closest to the fuselage,[1] and is the junction of the wing with the fuselage (not with a nacelle or any other body). The term is also used for the junction of the wing with the opposite wing, ie on the fuselage centerline, as with the upper wing of a biplane.[2] The opposite end of a wing from the wing root is the wing tip.
The aerodynamic properties of the overall aircraft can be greatly impacted by the shaping and other design choices of the wing root.[3] During both normal flight and landings, the wing root of an aircraft would be typically subjected to the highest bending forces through the aircraft. As a means of reducing interference drag between the wing and the fuselage, the use of fairings (often referred to as "wing fillets") became commonplace during the first half of the twentieth century;[4][5] the use of wing root fairings has been credited with achieving more favourable flight characteristics at both high and low speeds.[6] Furthermore, various other innovations and approaches have been developed to influence/control airflow in the vicinity of the wing root to achieve more favourable performance.[7] Various calculating methods for designed an optimal wing root of an aircraft have been devised.[8][9]
Fatigue has been recognised as a critical life-limiting factor associated with the wing root, which will eventually lead to catastrophic failure if not monitored.[10] Accordingly, it is commonplace within an aircraft's maintenance regime to mandate periodic assessments of the wing root to check for fatigue cracking and other signs of strain. For this purpose, the use of appropriately-applied strain gauges has become widespread, although alternative methods of detection have also been used.[11][12]
In the case of hypersonic aircraft, the wing root is judged to be a critical structural areas in terms of its heat migration and dissipation properties.[13]
See also
External links
Media related to Wing root at Wikimedia Commons
- ↑ Peppler, I.L.: From The Ground Up, page 9. Aviation Publishers Co. Limited, Ottawa Ontario, Twenty Seventh Revised Edition, 1996. <templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>ISBN 0-9690054-9-0
- ↑ https://archive.org/details/the-cambridge-aerospace-dictionary, p.712
- ↑ Effects of Taper Ratio on Aircraft Wing Aerodynamic Parameters: A Comperative Study. (March 2019) Retrieved from link
- ↑ US2927749A: Airfoil wing root fillet. (1956) Retrieved from link
- ↑ The Perfect Airplane Wing. Peter Garrison. (February 2019) Air & Space Magazine. Retrieved from link
- ↑ Wing Root Fairings. utdallas.edu. Retrieved 16 June 2020 from link
- ↑ US6152404A: Apparatus for influencing a wing root airflow in an aircraft. (1997) Retrieved from link
- ↑ <templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>Sobieczky, H (1998). "Configuration test cases for aircraft wing root design and optimization". Inverse Problems in Engineering Mechanics. International Symposium on Inverse Problems in Engineering Mechanics. pp. 371–380. doi:10.1016/B978-008043319-6/50043-1. ISBN 978-0-08-043319-6.
- ↑ <templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>Large, E (March 1981). "The optimal planform, size and mass of a wing". The Aeronautical Journal. 85 (842). Cambridge University Press: 103–110. doi:10.1017/S0001924000029481. S2CID 116825025.
{{cite journal}}: Check|s2cid=value (help) - ↑ Fatigue response of aircraft wing root joints under limit cycle oscillations. Behzad Yousefirad. (1 January 2005) Ryerson University. Retrieved from link
- ↑ F/A-18(A-D) Wing Root Fatigue Life Expended (FLE) Prediction without the use of Stain Gage Data. Jason M. Lindauer. (June 2010) Naval Postgraduate School. Retrieved from link
- ↑ <templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>Waruna Seneviratne; John Tomblin; Gayanath Aponso; Travis Cravens; Madan Kittur; Anisur Rahman (September 2011). "Durability and Residual Strength Assessment of F/A-18 A-D Wing-Root Stepped-Lap Joint". AIAA Centennial of Naval Aviation Forum "100 Years of Achievement and Progress". Aerospace Research Centre. doi:10.2514/6.2011-7032. ISBN 978-1-62410-134-2. S2CID 111712573.
{{cite book}}: Check|s2cid=value (help) - ↑ Experimental Study of Hypersonic Wing/Fin Root Heating at Mach 8. Arman Schwarz. (2014) University of Queensland. Retrieved from link
