id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ap-1624	Brabec, Jiří; Helmich, Martin	Development of an Ultralight with a Ducted Fan	2012	6	.pdf	application/pdf	3206	163	58	Keywords: available thrust, required thrust, propulsion, ducted fan. The following procedure will work with experimen- tally obtained available thrust values.	cache/ap-1624.pdf	txt/ap-1624.txt