Meijer, Marius-CorneDala, Laurent2018-07-302018-07-302019-02Meijer, M.C. & Dala, L. 2019, Role of higher-order terms in local piston theory', Journal of Aircraft, vol. 56, no. 1, pp. 388-392.0021-8669 (print)1533-3868 (online)10.2514/1.C034920http://hdl.handle.net/2263/66013The use of second- and third-order classical piston theory (CPT) is commonplace, with the role of the higher-order terms being well understood. The advantages of local piston theory (LPT) relative to CPT have been demonstrated previously. Typically, LPT has been used to perturb a mean-steady solution obtained from the Euler equations, and recently, from the NavierStokes equations. The applications of LPT in the literature have been limited to first-order LPT. The reasoning behind this has been that the dynamic linearization used assumes small perturbations. The present note clarifies the role of higher-order terms in LPT. It is shown that second-order LPT makes a non-zero contribution to the normal-force prediction, in contrast to second-order CPTen© 2018 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.Classical piston theory (CPT)Local piston theory (LPT)Higher-order termsEngineering, built environment and information technology articles SDG-04SDG-04: Quality educationEngineering, built environment and information technology articles SDG-07SDG-07: Affordable and clean energyEngineering, built environment and information technology articles SDG-09SDG-09: Industry, innovation and infrastructureEngineering, built environment and information technology articles SDG-13SDG-13: Climate actionPreprint Article