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A complete tank test of a model of a flying-boat hull - N.A.C.A. Model No. 11

Description: "This note discusses the limitations of the conventional tank test of a seaplane model. The advantages of a complete test, giving the characteristics of the model at all speeds, loads, and trim angles in the useful range are pointed out. The data on N.A.C.A. Model No.11, obtained from a complete test, are presented and discussed. The results are analyzed to determine the best trim angle for each speed and load. The data for the best angles are reduced to non-dimensional form for ease of compari… more
Date: July 1933
Creator: Shoemaker, James M. & Parkinson, John B.
Partner: UNT Libraries Government Documents Department
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Some Characteristics of Sprays Obtained from Pintle-Type Injection Nozzles

Description: "This report presents the results of tests made with the pintle-type injection nozzles, one having a pintle angle of 8 degrees, the other a pintle angle of 30 degrees. The fuel was injected into a glass-windowed pressure chamber and the spray photographed by means of the N.A.C.A. spray photography apparatus. Curves are presented that give the penetration of the spray tips when fuel oil is injected by pressures of 1,500 to 4,000 pounds per square inch into air at room temperature and densities o… more
Date: July 1933
Creator: Marsh, E. T. & Waldron, C. D.
Partner: UNT Libraries Government Documents Department
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Rolling, yawing, and hinge moments produced by rectangular ailerons

Description: Ailerons described in references 1, 2, and 3, are summarized in the form of empirical equations which relate the aileron dimensions and displacements to the rolling, yawing, and hinge moments for pitch angles of 0 and 12 degrees, corresponding to angles of attack of the wings of 4 and 16 degrees, respectively.
Date: January 1933
Creator: Heald, R. H.
Partner: UNT Libraries Government Documents Department
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Jet Propulsion with Special Reference to Thrust Augmenters

Description: An investigation of the possibility of using thrust augmented jets as prime movers was carried out. The augmentation was to be effected by allowing the jet to mix with the surrounding air in the presence of bodies which deflect the air set in motion by the jet. Six augmentation schemes were tested experimentally with compressed air at room temperature at jet speeds up to 1240 feet per second.
Date: January 1933
Creator: Schubauer, G. B.
Partner: UNT Libraries Government Documents Department
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Wind Tunnel Research Concerning Lateral Control Devices, Particularly at High Angles of Attack 7: Handley Page Tip and Full-Span Slots With Ailerons and Spoilers

Description: Tests were made with ordinary ailerons and different sizes of spoilers on rectangular Clark Y wing models with Handley Page tip and full span slots. The tests showed the effect of the control devices on the general performance of the wings as well as on the lateral control and lateral stability characteristics.
Date: January 1933
Creator: Weick, Fred E. & Wenzinger, Carl J.
Partner: UNT Libraries Government Documents Department
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Working charts for the stress analysis of elliptic rings

Description: This report presents charts which reduce the stress analysis of circular and elliptic rings of uniform cross section subjected to balanced systems of concentrated loads from a statically indeterminate problem to a statically determinate one. To demonstrate the use of the charts in the stress analysis of elliptic rings, an illustrative problem is included.
Date: January 1933
Creator: Burke, Walter F.
Partner: UNT Libraries Government Documents Department
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Formulas for the Stress Analysis of Circular Rings in a Monocoque Fuselage

Description: "The formulas given in this report provide a simplified method for the stress-analysis of fuselage bulkheads that are approximately circular rings of uniform cross section. Complicated load systems acting on a ring can usually be resolved into simplified load systems; and formulas for moment, axial force, and shear for such simplified load systems are given in this report. Illustrative examples showing the use of this method in practical stress-analysis work are also included" (p. 1).
Date: June 1933
Creator: Miller, Roy A. & Wood, Karl D.
Partner: UNT Libraries Government Documents Department
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Aerodynamic tests of a low aspect ratio tapered wing with various flaps, for use on tailless airplanes

Description: From Introduction: "The tests described in this report are the first in an investigation by N.A.C.A. of the aerodynamic characteristics of possible tailless arrangements. The investigations will be extended to include whatever range is through most desirable and may include, among other things, variations in aspect ratio, taper, sweepback, washout, air-foil section, dihedral, and also control flaps or other control devices of different forms and proportions."
Date: June 1933
Creator: Weick, Fred E. & Sanders, Robert
Partner: UNT Libraries Government Documents Department
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The importance of auto-ignition lag in knocking

Description: Report presenting an examination of the phenomenon of knocking, which is often accompanied by an apparently simultaneous reaction of the last part of the charge to burn. Several hypotheses regarding the burning of fuel and an exploration of current literature regarding the phenomena are provided.
Date: March 1933
Creator: Taylor, E. S.
Partner: UNT Libraries Government Documents Department
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The Girdwood District, Alaska

Description: From abstract: The Girdwood district has been known for about 35 years to contain placer gold, but the source of the gold in veins was not discovered until about 1909. When the Alaska Railroad was completed through Girdwood it was hoped that the improved transportation facilities would enable the lode mines to operate at a profit and also to furnish tonnage to the railroad. Production from the quartz veins, however, has been negligible, although one placer mine has been operating steadily for s… more
Date: 1933
Creator: Park, C. F., Jr.
Partner: UNT Libraries Government Documents Department
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The Valdez Creek Mining District, Alaska

Description: From abstract: The Valdez Creek mining district was one of those visited in 1931 in connection with the study of the mineral resource of the region tributary to the Alaska Railroad. It is underlain by argillite, schist, tuff, tuffaceous conglomerate, limestone, and greenstone, listed in approximate stratigraphic order beginning with the youngest.
Date: 1933
Creator: Ross, Clyde P.
Partner: UNT Libraries Government Documents Department
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Past Placer-Gold Production from Alaska

Description: "To the end of 1930 Alaska, according to the records of the Geological Survey, had produced placer gold to the value of $258,962,000 from mines widely scattered throughout its length and breadth. The distribution of the placers from which the gold was recovered has been stated in more or less detail in the annual summaries published by the Geological Survey on the mineral industry of Alaska and also in its more complete reports on many of the individual mining districts. Although these summarie… more
Date: 1933
Creator: Smith, Philip S.
Partner: UNT Libraries Government Documents Department
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The Mount Eielson District Alaska

Description: From abstract: The Mount Eielson district lies in south-central Alaska, on the north side of the Alaska Range, about 30 miles east of Mount McKinley. The most widely distributed rocks of the district include a thick series of thin-bedded limestone, calcareous shale, and graywacke of Paleozoic, probably Devonian, age. These sediments are cut by a mass of granodiorite which forms most of Mount Eielson and which was intruded probably in late Mesozoic time. The intrusive has sent a multitude of dik… more
Date: 1933
Creator: Reed, John C.
Partner: UNT Libraries Government Documents Department
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Mineral Deposits Near the West Fork of the Chulitna River Alaska

Description: From abstract: The area in the vicinity of the West Fork of the Chulitna River, Alaska, one of those examined in 1931 in connection with the study of mineral resources in districts tributary to the Alaska Railroad, contains numerous prospects but, as yet, no productive mines. Its placer deposits are negligible but some of its lodes may prove valuable for gold and silver and perhaps also for copper and arsenic.
Date: 1933
Creator: Ross, Clyde P.
Partner: UNT Libraries Government Documents Department
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Lode Deposits of Eureka and Vicinity, Kantishna District, Alaska

Description: From abstract: The Kantishna mining district is about 90 miles west of McKinley Park station on the Alaska Railroad. The part of the district covered by this report comprises an area of about 72 square miles in the form of a strip 6 miles wide and 13 miles long. The bedrock is mainly a metamorphic series of rocks which within the area has been differentiated into a quartz-muscovite schist and a calcareous faces that ranges from limestone to chlorite schist. A few small dikes of quartz porphyry … more
Date: 1933
Creator: Wells, Francis G.
Partner: UNT Libraries Government Documents Department
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The Moose Pass-Hope District, Kenai Peninsula, Alaska

Description: This report provides and in-depth description of the Moose Pass-Hope District in Alaska, including on overview of the general area, physical geology, and economic geology.
Date: 1933
Creator: Tuck, Ralph
Location: None
Partner: UNT Libraries Government Documents Department
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Progress of Surveys in the Anthracite Ridge District Alaska

Description: From abstract: Anthracite Ridge is in south-central Alaska, on the north side of the Matanuska River Valley, about 200 miles north of Seward, the coastal terminus of the Alaska Railroad. The specific object of the investigations in this field during the summer of 1931 was to collect information regarding the character and extent of the anthracite deposits. These studies were carried on in connection with similar intensive studies of deposits of other kinds of minerals throughout the country tri… more
Date: 1933
Creator: Richards, Ralph W. & Waring, Gerald A.
Partner: UNT Libraries Government Documents Department
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Lode Deposits of the Fairbanks District, Alaska

Description: From abstract: To help the mining industry of Alaska and to assist in the development of the mineral resources of the Territory have been the prime motives of the Geological Survey's investigations in Alaska during the past 35 years, in which nearly one half of the Territory has been covered by its reconnaissance and exploratory surveys. It was natural, therefore, that the Alaska Railroad, when it undertook intensive consideration of the problem of finding tonnage that would increase its revenu… more
Date: 1933
Creator: Hill, James M.
Partner: UNT Libraries Government Documents Department
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The Willow Creek Gold Lode District Alaska

Description: From abstract: The gold quartz veins of the Willow Creek district belong to the type of ore deposits that may be expected to continue downward for several thousand feet below the present surface. The veins occur in an essentially homogeneous quartz diorite intrusive mass, batholithic in form ; therefore, the composition of the wall rock plays practically no significant part in the distribution of gold within the veins. The veins were formed partly as fissure fillings and partly by replacement o… more
Date: 1933
Creator: Ray, James C.
Partner: UNT Libraries Government Documents Department
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Some Mining Districts of Eastern Oregon

Description: From abstract: This report presents the results of a reconnaissance of most of the mining districts of Oregon east of the Cascade Range, with the exception of the districts in the Sumpter quadrangle. The districts described are distributed through an area roughly coincident with the Blue Mountains, which extend over much of the northeast quarter of the State.
Date: 1933
Creator: Gilluly, James; Reed, J. C. & Park, C. F., Jr.
Partner: UNT Libraries Government Documents Department
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Geology and Ore Deposits of the Takilma-Waldo District, Oregon: Including the Blue Creek District

Description: From Abstract: Two areas and their included mineral deposits, situated in Josephine County, southwestern Oregon, are described in this report. They lie within the Klamath Mountains, a region which is made up for the most part of rugged ridges trending in various directions but which, when viewed from higher summits, resembles a dissected plateau and is known as the Klamath peneplain. Rocks of both igneous and sedimentary origin are abundant in the districts described. The marine sedimentary roc… more
Date: 1933
Creator: Shenon, Philip J.
Partner: UNT Libraries Government Documents Department
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The Climax Molybdenum Deposit, Colorado

Description: From abstract: The largest single metal-mining operation in the history of mining in Colorado has been developed at Climax, as a result of the increased use of molybdenum in the steel and other industries. Production of molybdenum at Climax was notable for a short period during the World War; it ceased from April 1919 to August 1924 but since then has shown a steady increase. In 1930 from 1,000 to 1,200 tons of ore was milled daily, using only one unit of the 2,000-ton mill. The mine has a rese… more
Date: 1933
Creator: Butler, B. S. & Vanderwilt, J. W.
Partner: UNT Libraries Government Documents Department
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