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open access

Boundary Layer Control Applied to Tail Surfaces of Aircraft, Part 1. Wind Tunnel Report

Description: Report describing the wind tunnel tests of a model of a horizontal tail surface equipped with low pressure high lift boundary layer control made to determine life, drag, pitched moment, hinge moment coefficients, and chordwise pressure distributions for various angles of attach, elevator deflections, and blowing quantity flow coefficients.
Date: December 1957
Creator: Leisher, L. L. & Gertsen, W. M.
open access

Boundary Layer Control Applied to Tail Surfaces of Aircraft, Part 2. Final Report

Description: Report presenting the results of flight tests to determine the effects of blowing boundary layer control applied to the tail surfaces of the Cessna Model 319B. The design, construction, structural text and installation of BLC tail surfaces are described, as well as the flight test results, including numerous graphical depictions of the results.
Date: December 1957
Creator: Gertsen, W. M. & Wise, W. D.
open access

Development and Evaluation of Insulating Type Ceramic Coatings

Description: Report discussing the development of a metal reinforced ceramic coating system to successfully withstand temperatures of 3500°F while providing insulative values for the supporting structure. Materials used for coating development and evaluation, thermal tests, and recommendations for preparing specimen, testing and coating development are described.
Date: November 1959
Creator: Blocker, E. W.; Hauck, C. A.; Sklarew, S. & Levy, A. V.
open access

Mechanical Properties of Selected Alloys at Elevated Temperatures, Part II: Design Criteria of Silicon Carbide

Description: Report describing a research study to determine in broad parameters the areas where a brittle, non-metallic body such as silicon carbide might be used in aircraft construction and establishing methods for obtaining these properties. A theoretical and literature review, design parameters, discussion of the testing phase, and test specimen geometry explanation are included.
Date: March 1960
Creator: Pearl, Harry A.; Nowak, John M. & Deban, Harry G.
open access

Mechanical Properties of Selected Alloys at Elevated Temperatures [Pt. 1]

Description: Report describing a research study to provide material property data of the type and quality necessary for efficient design of hot aircraft and missile structural components. Six materials in plate and bar form were subjected to tension, compression, bearing, and shear stresses at various temperatures. Preliminary considerations of the study, testing apparatus, calibration and accuracy of the equipment, testing procedures and results are discussed.
Date: March 1960
Creator: Pearl, Harry A.; Kappelt, George F. & King, Edmund J.
open access

Mechanical Property Survey of Refractory Nonmetallic Crystalline Materials and Intermetallic Compounds

Description: Report surveying literature on the mechanical properties of nonmetallic polycrystalline compounds and intermetallic compounds with melting points above 1500°C. Data collected on physical, mechanical, and thermal properties of the compounds is presented in summary tables and figures, with interpreted data separated into six appendices, each discussing a separate mechanical behavior of the materials.
Date: January 1960
Creator: Smiley, William D.; Sobon, Leon E.; Hruz, Frank M.; Farley, Eldon P.; Chilton, J. Emery; Poncelet, Eugene F. et al.
open access

Research on Accelerated Reliability Testing Methods Applicable to Non-Electronic Components of Flight Control Systems

Description: Report detailing a study of techniques for the testing of electromechanical components in time compressed form. Included is a synopsis of program effort, description of work accomplished, along with recommendations, for techniques including system failure mode analysis, classification and ranking of failure modes in terms of influence and frequency of occurrence, and physics of failure analysis at part and material levels.
Date: March 1965
Creator: Johnson, W. F.; Stulen, F. H.; McAvoy, F. M.; Schulte, W. C. & Meyer, M.
open access

Survey of Human Dynamics Data and a Sample Application

Description: Report describing an approach to the application of the results of research on the human transfer function. A form of a quasi-linear human transfer function has been laid out on the basis of previous experimental results. It has been assumed that human reaction time and neuromuscular lag are constant and that the pilot will adopt a gain and compensation through training which will minimize the mean square tracking error of the system of which he is part. Calculations were made of the mean squar… more
Date: November 1959
Creator: Senders, John W., 1920-
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