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 Collection: Technical Report Archive and Image Library
Some effects of frequency on the contribution of a vertical tail to the free aerodynamic damping of a model oscillating in yaw

Some effects of frequency on the contribution of a vertical tail to the free aerodynamic damping of a model oscillating in yaw

Date: January 1, 1953
Creator: Bird, John D; Fisher, Lewis R & Hubbard, Sadie M
Description: The damping in yaw and the directional stability of a model freely oscillating in yaw were measured tail-off and tail-on and compared with the values obtained by theoretical consideration of the unsteady lift associated with an oscillating vertical tail. A range of low frequencies comparable to those of the lateral motions of airplanes was covered. The analysis includes the effects of vertical-tail aspect ratio and the two-dimensional effects of compressibility.
Contributing Partner: UNT Libraries Government Documents Department
Some effects of fuselage flexibility on longitudinal stability and control

Some effects of fuselage flexibility on longitudinal stability and control

Date: April 1, 1956
Creator: Klawans, Bernard B & Johnson, Harold I
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Some effects of fuselage interference, wing interference, and sweepback on the damping in roll of untapered wings as determined by techniques employing rocket-propelled vehicles

Some effects of fuselage interference, wing interference, and sweepback on the damping in roll of untapered wings as determined by techniques employing rocket-propelled vehicles

Date: October 8, 1951
Creator: Bland, William M , Jr & Dietz, Albert E
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Some effects of guide-vane turning and stators on the rotating stall characteristics of a high hub-tip ratio single-stage compressor

Some effects of guide-vane turning and stators on the rotating stall characteristics of a high hub-tip ratio single-stage compressor

Date: April 1, 1956
Creator: Costilow, Eleanor L & Huppert, Merle C
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Some effects of gutter flame-holder dimensions on combustion-chamber performance of 20-inch ram jet

Some effects of gutter flame-holder dimensions on combustion-chamber performance of 20-inch ram jet

Date: July 30, 1948
Creator: Perchonok, Eugene; Wishnek, George & Wilcox, Fred A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Some effects of heat transfer at Mach number 2.0 at stagnation temperatures between 2,310 and 3,500 R on a magnesium fin with several leading-edge modifications

Some effects of heat transfer at Mach number 2.0 at stagnation temperatures between 2,310 and 3,500 R on a magnesium fin with several leading-edge modifications

Date: April 18, 1957
Creator: Bland, William M , Jr & Bressette, Walter E
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Some effects of injection advance angle, engine-jacket temperature, and speed on combustion in a compression-ignition engine

Some effects of injection advance angle, engine-jacket temperature, and speed on combustion in a compression-ignition engine

Date: January 1, 1936
Creator: Rothrock, A M & Waldron, C D
Description: An optical indicator and a high-speed motion-picture camera capable of operating at the rate of 2,000 frames per second were used to record simultaneously the pressure development and the flame formation in the combustion chamber of the NACA combustion apparatus. Tests were made at engine speeds of 570 and 1,500 r.p.m. The engine-jacket temperature was varied from 100 degrees to 300 degrees F. And the injection advance angle from 13 degrees after top center to 120 degrees before top center. The results show that the course of the combustion is largely controlled by the temperature and pressure of the air in the chamber from the time the fuel is injected until the time at which combustion starts and by the ignition lag. The conclusion is presented that in a compression-ignition engine with a quiescent combustion chamber the ignition lag should be the longest that can be used without excessive rates of pressure rise; any further shortening of the ignition lag decreased the effective combustion of the engine.
Contributing Partner: UNT Libraries Government Documents Department
Some effects of internal coolants on knock-limited and temperature-limited power as determined in a single-cylinder aircraft test engine

Some effects of internal coolants on knock-limited and temperature-limited power as determined in a single-cylinder aircraft test engine

Date: August 1, 1944
Creator: Slough, James W
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Some effects of joint conductivity on the temperatures and thermal stresses in aerodynamically heated skin-stiffener combinations

Some effects of joint conductivity on the temperatures and thermal stresses in aerodynamically heated skin-stiffener combinations

Date: June 1, 1956
Creator: Griffith, George E & Miltonberger, Georgene H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Some effects of leading-edge roughness on the aileron effectiveness and drag of a thin rectangular wing employing a full-span plain aileron at Mach numbers from 0.6 to 1.5

Some effects of leading-edge roughness on the aileron effectiveness and drag of a thin rectangular wing employing a full-span plain aileron at Mach numbers from 0.6 to 1.5

Date: November 4, 1953
Creator: English, Roland D
Description: None
Contributing Partner: UNT Libraries Government Documents Department