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Comparison of Pitching Moments Produced by Plain Flaps and by Spoilers and Some Aerodynamic Characteristics of an NACA 23012 Airfoil with Various Types of AileronSectional characteristics of airfoil having retractable slotted flap with plain, slot-lip, or retractable ailerons are presented for a large range of aileron deflections. The analysis indicated that pitching moments produced by spoilers were less positive than those produced by plain flaps of equal effectiveness, also that pitching moments created by the spoiler increased less with the Mach number than similar moments produced by plain flaps. Positive values of pitching moment decreased as devices were located nearer airfoil leading edge.
Document ID
19930092763
Acquisition Source
Legacy CDMS
Document Type
Other - NACA Wartime Report
External Source(s)
hdl:100.2/ADA800606
Authors
Purser, Paul E. (National Advisory Committee for Aeronautics. Langley Aeronautical Lab. Langley Field, VA, United States)
Mckinney, Elizabeth G. (National Advisory Committee for Aeronautics. Langley Aeronautical Lab. Langley Field, VA, United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1945
Subject Category
Aerodynamics
Report/Patent Number
NACA-ACR-L5C24a
NACA-WR-L-124
Report Number: NACA-ACR-L5C24a
Report Number: NACA-WR-L-124
Accession Number
93R22053
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
PITCHING MOMENTS - AIRFOILS
WING FLAPS
LATERAL CONTROL DEVICES
WING SPOILERS
AIRFOILS - NACA 23012 - CHAR & MOMENTS WING FLAPS, SLOTTED & AILERONS
WINGS, TWISTED
AILERONS, SLOT-LIP
AILERONS, RETRACTABLE

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