id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ap-508	Tuncer, I. H.; Kay, M.	Optimization of Flapping Airfoils for Maximum Thrust and Propulsive Efficiency	2004	8	.pdf	application/pdf	3511	170	56	In this work an approximation is made [13], and the step size is evaluated as follows: � � � � � �� O O D where � � � � � � �� � � O O O e n n n � � � � � D v v 1 1 . � ���O �D is then evaluated numerically.	cache/ap-508.pdf	txt/ap-508.txt