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Some Notes on the Determination of the Stick-Free Neutral Point from Wind-Tunnel DataTwo graphical methods are presented for determining the stick-free neutral point, and they are extensions of the methods commonly used to determine the stick-free neutral point. A mathematical formula for computing the stick-free neutral point is also given. These methods may be applied to determine approximately the increase in tail size necessary to shift the neutral point (stick fixed or free) to any desired location on an airplane having inadequate longitudinal stability.
Document ID
19930092564
Acquisition Source
Legacy CDMS
Document Type
Other - NACA Wartime Report
Authors
Schuldenfrei, Marvin
(National Advisory Committee for Aeronautics. Langley Aeronautical Lab. Langley Field, VA, United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1944
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
NACA-WR-L-251
NACA-RB-4B21
Report Number: NACA-WR-L-251
Report Number: NACA-RB-4B21
Accession Number
93R21854
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
STABILITY CALCULATIONS
STABILITY, LONGITUDINAL - STATIC
CONTROL STICKS
TAIL SURFACES
CENTER OF GRAVITY - POSITION
ELEVATORS
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