Serial/Series Title

Airfoil lift with changing angle of attack (open access)

Airfoil lift with changing angle of attack

From Summary: "Tests have been made in the atmospheric wind tunnel of the National Advisory Committee for Aeronautics to determine the effects of pitching oscillations upon the lift of an airfoil. It has been found that the lift of an airfoil, while pitching, is usually less than that which would exist at the same angle of attack in the stationary condition, although exceptions may occur when the lift is small or if the angle of attack is being rapidly reduced. It is also shown that the behavior of a pitching airfoil may be qualitatively explained on the basis of accepted aerodynamic theory."
Date: September 1927
Creator: Reid, Elliott G.
System: The UNT Digital Library
Measurement of the Moments of Inertia of Full Scale Airplanes (open access)

Measurement of the Moments of Inertia of Full Scale Airplanes

"This paper contains a description of the method of measuring the moments of inertia of full scale airplanes as practiced by the National Advisory Committee for Aeronautics at the Langley Memorial Aeronautical Laboratory. The method, while not at all new, is published for the information and guidance of others who may desire to make similar measurements. The paper includes as an appendix the computations for the moments of inertia of 0-2 airplane" (p. 1).
Date: September 1927
Creator: Green, M. W.
System: The UNT Digital Library
Tests of the N.P.L. airship models in the variable density wind tunnel (open access)

Tests of the N.P.L. airship models in the variable density wind tunnel

Report presenting testing in the variable density wind tunnel on two airship models known as the NPL Standardization Models, long and short. The resistance or shape coefficients were determined for each model through a range of Reynolds numbers. Further work is found to be necessary in the standardization of wind tunnels.
Date: September 1927
Creator: Higgins, George J.
System: The UNT Digital Library