Longitudinal frequency-response characteristics of a 35 degree swept-wing airplane as determined from flight measurements, including a method for the evaluation of transfer functions (open access)

Longitudinal frequency-response characteristics of a 35 degree swept-wing airplane as determined from flight measurements, including a method for the evaluation of transfer functions

Report presenting longitudinal frequency-response characteristics of a 35 degree swept-wing airplane computed from flight measurements. Also presented are pitching-velocity frequency responses to displacements of the adjustable stabilizer. Results regarding frequency-response curves, transfer functions, elevator effectiveness, altitude variations, and potential errors in data are provided.
Date: September 19, 1951
Creator: Triplett, William C. & Smith, G. Allan
System: The UNT Digital Library
Summary of Results Obtained by Transonic-Bump Method on Effects of Plan Form and Thickness on Lift and Drag Characteristics of Wings at Transonic Speeds (open access)

Summary of Results Obtained by Transonic-Bump Method on Effects of Plan Form and Thickness on Lift and Drag Characteristics of Wings at Transonic Speeds

Memorandum presenting a summary of the effects of plan form and thickness on the lift and drag characteristics of wings at transonic speeds. The data was obtained during a transonic research program conducted in the high-speed 7- by 10-foot tunnel by the transonic-bump method. Results regarding lift, drag at zero lift, and drag due to lift are provided.
Date: November 30, 1951
Creator: Polhamus, Edward C.
System: The UNT Digital Library
Cooperative Investigation of Relationship Between Static and Fatigue Properties of Heat-Resistant Alloys at Elevated Temperatures (open access)

Cooperative Investigation of Relationship Between Static and Fatigue Properties of Heat-Resistant Alloys at Elevated Temperatures

Memorandum presenting a study of the relationship between the static and dynamic properties of heat-resistant alloys at high temperatures. An auxiliary objective is to provide a better basis for evaluating the results from the various types of fatigue machines.
Date: March 7, 1951
Creator: NACA Subcommittee on Heat-Resisting Materials
System: The UNT Digital Library