This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources. Find sources: "Parker variable wing" – news · newspapers · books · scholar · JSTOR(April 2010)
The Parker variable wing is a wing configuration in biplane or triplane aircraft designed by H.F. Parker in 1920.[1] His design allows a supplement in lift while landing or taking-off. The system is depicted in the figure. The figure shows the biplane configuration. The lower airfoil is rigid. The upper airfoil is flexible. At high angle of attack the flow over the lower airfoil will cause the airflow to bend up and create an upward force at the lower surface of the upper airfoil. This upward force will cause the flexible section to be pushed upward. The flexible wing section is held at points A and B. The trailing edge is rigid and can rotate about point B. Due to this effect the camber of the airfoil is increased, and hence the lift it creates is increased.
^H. F Parker "The Parker Variable Camber Wing", NACA Report 77 (PDF), 1920. National Advisory Committee for Aeronautics. Retrieved 7 April 2016
January 01, 1970
parker, variable, wing, this, article, relies, largely, entirely, single, source, relevant, discussion, found, talk, page, please, help, improve, this, article, introducing, citations, additional, sources, find, sources, news, newspapers, books, scholar, jstor. This article relies largely or entirely on a single source Relevant discussion may be found on the talk page Please help improve this article by introducing citations to additional sources Find sources Parker variable wing news newspapers books scholar JSTOR April 2010 The Parker variable wing is a wing configuration in biplane or triplane aircraft designed by H F Parker in 1920 1 His design allows a supplement in lift while landing or taking off The system is depicted in the figure The figure shows the biplane configuration The lower airfoil is rigid The upper airfoil is flexible At high angle of attack the flow over the lower airfoil will cause the airflow to bend up and create an upward force at the lower surface of the upper airfoil This upward force will cause the flexible section to be pushed upward The flexible wing section is held at points A and B The trailing edge is rigid and can rotate about point B Due to this effect the camber of the airfoil is increased and hence the lift it creates is increased Parker Variable wingSee also editAeroelasticity X 53 Active Aeroelastic Wing Adaptive compliant wingReferences edit H F Parker The Parker Variable Camber Wing NACA Report 77 PDF 1920 National Advisory Committee for Aeronautics Retrieved 7 April 2016 Retrieved from https en wikipedia org w index php title Parker variable wing amp oldid 1138367039, wikipedia, wiki, book, books, library,
