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  Partner: UNT Libraries Government Documents Department
 Serial/Series Title: NACA Technical Notes
 Collection: National Advisory Committee for Aeronautics Collection
Remarks on the Pressure Distribution over the Surface of an Ellipsoid, Moving Translationally Through a Perfect Fluid

Remarks on the Pressure Distribution over the Surface of an Ellipsoid, Moving Translationally Through a Perfect Fluid

Date: December 1, 1979
Creator: Munk, Max M.
Description: The pressure distribution over ellipsoids when in translatory motion through a perfect fluid is calculated. A method to determine the magnitude of the velocity and of the pressure at each point of the surface of an ellipsoid of rotation is described.
Contributing Partner: UNT Libraries Government Documents Department
An approximate spin design criterion for monoplanes, 1 May 1939

An approximate spin design criterion for monoplanes, 1 May 1939

Date: January 1, 1976
Creator: Seidman, O. & Donlan, C. J.
Description: An approximate empirical criterion, based on the projected side area and the mass distribution of the airplane, was formulated. The British results were analyzed and applied to American designs. A simpler design criterion, based solely on the type and the dimensions of the tail, was developed; it is useful in a rapid estimation of whether a new design is likely to comply with the minimum requirements for safety in spinning.
Contributing Partner: UNT Libraries Government Documents Department
Methods of analyzing wind-tunnel data for dynamic flight conditions

Methods of analyzing wind-tunnel data for dynamic flight conditions

Date: January 1, 1976
Creator: Donlan, C. J. & Recant, I. G.
Description: The effects of power on the stability and the control characteristics of an airplane are discussed and methods of analysis are given for evaluating certain dynamic characteristics of the airplane that are not directly discernible from wind tunnel tests alone. Data are presented to show how the characteristics of a model tested in a wind tunnel are affected by power. The response of an airplane to a rolling and a yawing disturbance is discussed, particularly in regard to changes in wing dihedral and fin area. Solutions of the lateral equations of motion are given in a form suitable for direct computations. An approximate formula is developed that permits the rapid estimation of the accelerations produced during pull-up maneuvers involving abrupt elevator deflections.
Contributing Partner: UNT Libraries Government Documents Department
Spin tests of a low-wing monoplane to investigate scale effect in the model test range, May 1941

Spin tests of a low-wing monoplane to investigate scale effect in the model test range, May 1941

Date: January 1, 1976
Creator: Donlan, C. J.
Description: Concurrent tests were performed on a 1/16 and a 1/20 scale model (wing spans of 2.64 and 2.11 ft. respectively) of a modern low wing monoplane in the NACA 15 foot free-spinning wind tunnel. Results are presented in the form of charts that afford a direct comparison between the spins of the two models for a number of different conditions. Qualitatively, the same characteristic effects of control disposition, mass distribution, and dimensional modifications were indicated by both models. Quantitatively, the number of turns for recover and the steady spin parameters, with the exception of the inclination of the wing to the horizontal, were usually in good agreement.
Contributing Partner: UNT Libraries Government Documents Department
Boundary-layer Displacement Effects in Air at Mach Numbers of 6.8 and 9.6

Boundary-layer Displacement Effects in Air at Mach Numbers of 6.8 and 9.6

Date: January 1, 1959
Creator: Bertram, M. H.
Description: Boundary layer displacement effects in air at mach 6.8 and 9.6.
Contributing Partner: UNT Libraries Government Documents Department
An Analysis of Ramjet Engines Using Supersonic Combustion

An Analysis of Ramjet Engines Using Supersonic Combustion

Date: September 1, 1958
Creator: Weber, Richard J & Mackay, John S
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Analysis of the creep behavior of a square plate loaded in edge compression

Analysis of the creep behavior of a square plate loaded in edge compression

Date: September 1, 1958
Creator: Mccomb, Harvey G , Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Analysis of turbulent flow and heat transfer in noncircular passages

Analysis of turbulent flow and heat transfer in noncircular passages

Date: September 1, 1958
Creator: Deissler, Robert G & Taylor, Maynard F
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Analytical and experimental investigation of temperature recovery factors for fully developed flow of air in a tube

Analytical and experimental investigation of temperature recovery factors for fully developed flow of air in a tube

Date: September 1, 1958
Creator: Weiland, W F; Lowdermilk, W H & Deissler, R G
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An analytical study of turbulent and molecular mixing in rocket combustion

An analytical study of turbulent and molecular mixing in rocket combustion

Date: September 1, 1958
Creator: Bittker, David A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
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