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29 Matching Results
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Wind-tunnel tests of a blunt-nose aileron with beveled trailing edge on an NACA 66(215)-216 airfoil with several modifications of aileron nose and adjacent airfoil contour
Report presenting an investigation of ailerons with a beveled trialing edge and a blunt-nose overhang of 35 percent aileron chord on an NACA 66(215)-26 airfoil in two-dimensional flow. Five configurations were tested with various modifications of the aileron nose and adjacent airfoil contour to determine the effect of modifications on lift and aileron hinge-moment characteristics.
Date:
February 1945
Creator:
Bird, J. D.
System:
The UNT Digital Library
Determination of the Stability and Control Characteristics of a Straight-Wing, Tailless Fighter-Airplane Model in the Langley Free-Flight Tunnel
Report presenting an investigation to determine the stability and control characteristics of a straight-wing, tailless fighter model with a pusher propeller in the free-flight tunnel. The investigation consisted principally of force and flight tests of a powered dynamic model. Results regarding longitudinal stability, longitudinal control, trim at high angles of attack, lateral stability, and lateral control are provided.
Date:
February 1946
Creator:
Seacord, Charles L., Jr. & Ankenbruck, Herman O.
System:
The UNT Digital Library
Effects of Specific Types of Surface Roughness on Boundary-Layer Transition
Report presenting tests of two typical low-drag airfoils of 90-inch chord to determine the effects of surface projections, grooves, and sanding scratches on boundary-layer transition. Data were obtained for projections of various sizes and chordwise locations on both low-drag airfoils.
Date:
February 1946
Creator:
Loftin, Laurence K., Jr.
System:
The UNT Digital Library
Effects of Specific Types of Surface Roughness on Boundary-Layer Transition
Report presenting tests conducted with two typical low-drag airfoils of 90-inch chord to determine the effects of surface projections, grooves, and sanding scratches on boundary-layer transition. Data were obtained for projections of various sizes and chordwise locations on both low-drag airfoils.
Date:
February 1946
Creator:
Loftin, Laurence K., Jr.
System:
The UNT Digital Library
Occurrence of Iron Oxides on Cast-Iron Engine Surfaces After Operation
Report presenting an examination of the surfaces of used cast-iron piston rings from various single-cylinder aircraft engine tests by electron diffraction. Generally, the oxide patterns were obtained to an appreciable extent from only the top compression ring of the piston-ring assembly; the other rings gave predominately a graphite pattern.
Date:
February 1946
Creator:
Nowick, A. S. & Brockway, L. O.
System:
The UNT Digital Library