Exploration of a slotted, natural-laminar-flow airfoil concept

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations


A slotted, natural-laminar-flow (SNLF) airfoil, the S414, was designed for rotorcraft applications with the primary objectives of high maximum lift and low profile drag in conjunction with satisfying a thickness constraint. Previous measurements taken in the Pennsylvania State University Low-Speed, Low-Turbulence Wind Tunnel, along with theoretical analyses using MSES and OVERFLOW, demonstrate that the design objectives have been met. The overall aim of the effort reported herein is to advance the SNLF concept toward practical application. To accomplish this goal, a better understanding of the aerodynamic interaction between the fore and aft elements is sought by exploring different positions of the fore and aft elements relative to one another. The results confirm the potential of the SNLF airfoil concept and provide a better understanding of the use of the aft element as a control surface. While it is clear that the aft element could be “scheduled” to operate as a flap and/or aileron, incorporating a control surface into the aft element promises to be more effective and much less complicated. Comparisons of computed aerodynamic characteristics with those obtained experimentally show good agreement.

Original languageEnglish (US)
Title of host publication2018 Applied Aerodynamics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105593
StatePublished - 2018
Event36th AIAA Applied Aerodynamics Conference, 2018 - [state] GA, United States
Duration: Jun 25 2018Jun 29 2018

Publication series

Name2018 Applied Aerodynamics Conference


Other36th AIAA Applied Aerodynamics Conference, 2018
Country/TerritoryUnited States
City[state] GA

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Mechanical Engineering


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