KF airfoil section for rotor blade applications
Investigation of the Kline-Fogleman airfoil section for rotor blade applications
Title: Investigation of the Kline-Fogleman airfoil section for rotor blade applications
Author(s): Lumsdaine, E.; Johnson, W. S.; Fletcher, L. M.; Peach, J. E.
Abstract: Wind tunnel tests of a wedgeshaped airfoil with sharp leading edge and a spanwise step were conducted. The airfoil was tested with variations of the following parameters: (1) Reynolds number, (2) step location, (3) step shape, (4) apex angle, and (5) with the step on either the upper or lower surface. The results are compared with a flat plate and with wedge airfoils without a step having the same aspect ratio. Water table tests were conducted for flow visualization and it was determined that the flow separates from the upper surface at low angles of attack. The wind tunnel tests show that the lift/drag ratio of the airfoil is lower than for a flat plate and the pressure data show that the airfoil derives its lift in the same manner as a flat plate.
NASA Center: NASA (non Center Specific)
Publication Date: Dec 15, 1974
Document Source: CASI
Online Source: View PDF File (source)
Document ID: 19750006642
Accession ID: 75N14714
Publication Information: Number of Pages = 26
Report Number: AE-74-1054-1; NASA-CR-141282
Contract-Grant-Task Number: NSG-1054
Price Code: A03
Keywords: AERODYNAMIC COEFFICIENTS; AIRFOIL PROFILES; WEDGES; WIND TUNNEL TESTS; AERODYNAMIC CONFIGURATIONS; DATA ACQUISITION; FLOW VISUALIZATION; PERFORMANCE TESTS;
Accessibility: Unclassified; No Copyright; Unlimited; Publicly available; Semiannual Report
Updated/Added to NTRS: 2007-07-26
