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Wind-tunnel tests of a 1/4 scale model of the Bell XS-1 transonic airplane. 1: Longitudinal stability and control characteristicsA 1/4 scale model of the Bell XS-1 transonic aircraft was tested in the Langley 300 mile-per-hour 7 by 10 foot tunnel to determine its low speed longitudinal stability and control characteristics. Pertinent longitudinal flying qualities expected of the XS-1 research airplane were estimated from the results of these tests including the effects of compressibility likely to be encountered at speeds below the force break. It appears that the static longitudinal stability and elevator control power will be adequate, but that the elevator control force gradient in steady flight will be undesirably low for all configurations. It is suggested that a centering spring be incorporated in the elevator control system of the airplane in order to increase the control force gradient in steady flight and in maneuvers.
Document ID
19770022127
Document Type
Other - Other
Authors
Donlan, C. J. (NASA Langley Research Center Hampton, VA, United States)
Kemp, W. B., Jr. (NASA Langley Research Center Hampton, VA, United States)
Polhamus, E. C. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1976
Publication Information
Publication: Collected Works of Charles J. Donlan
Subject Category
AERODYNAMICS
Report/Patent Number
L6D12
Funding Number(s)
PROJECT: DA PROJ. 653
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19770022115Analytic PrimaryCollected works of Charles J. Donlan
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