Improved design of a high lift system for general aviation aircraft

Conference paper (2016)

Authors

D. Florjancic Beheer & Vermarkten IP
D. Steenhuizen Flight Performance and Propulsion - Aerospace Engineering
L.L.M. Veldhuis Flight Performance and Propulsion - Aerospace Engineering
Research Group
Flight Performance and Propulsion (Aerospace Engineering) (TU Delft)
Copyright: © 2016 D. Florjancic, D. Steenhuizen, L.L.M. Veldhuis
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Published Date

2016

Language

English

Reuse Rights

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Faculty

Aerospace Engineering

Department

Flow Physics and Technology

Research Group

Flight Performance and Propulsion

Abstract

Optimization of a single slotted flap with dropped hinge is performed with the objective of increasing the payload of a propeller driven 4-seater general aviation aircraft. Within the optimization loop, two-dimensional aerodynamic characteristics are evaluated using the MSES code, while three-dimensional aerodynamic characteristics and weight are estimated with semi-empirical methods. Genetic and pattern search algorithms are used to minimize the objective function. It is found that the payload can be increased by up to 40% if the stall speed is kept constant. Cruise drag due to flap support fairings increases the fuel burn for 3% on a range of 1000 nm. A method of using the maximum displacement thickness on the flap trailing edge in order to detect separation during optimization is proposed and found to be reliable.

Files

2016_0347_paper.pdf
(.pdf | 0.876 Mb)