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Experimental Research on 4-Duct Tandem VTOL Aircraft ConfigurationsThis paper presents a brief summary of several wind-tunnel investigations conducted at the Langley Research Center of the NASA to study the aerodynamic and stability and control characteristics of several VTOL aircraft configurations powered by four tilting ducted propellers arranged in tandem pairs. Specifically the two rear ducts could be mounted close alongside the upper rear portion of the fuselage with small wing panels attached to the outboard side of the ducts or could be mounted outboard on the tips of a small wing located high on the rear portion of the fuselage. The two front ducts were always mounted close inboard on the forward part of the fuselage and could be mounted either in a high or low position on the fuselage. The results of the investigation indicated that aircraft of this type could have acceptable aerodynamic and static longitudinal and lateral stability and control characteristics in both transition and normal cruise flight except for the possible qualification that the lateral force due to sideslip is abnormally high and might cause the aircraft to be too sensitive to side gusts.
Document ID
19620001441
Acquisition Source
Langley Research Center
Document Type
Other
Authors
Mc Kinney, M. O. (NASA Langley Research Center Hampton, VA, United States)
Newsom, W. A. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 2, 2013
Publication Date
May 3, 1962
Subject Category
Aircraft Design, Testing And Performance
Meeting Information
Meeting: Annual Forum of the American Helicopter Society
Location: Washington, D.C.
Country: United States
Start Date: May 3, 1962
End Date: May 5, 1962
Sponsors: Vertical Flight Society
Accession Number
62N11441
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
VTOL AIRCRAFT

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