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A Note on the Kinetics of Homogeneous Piles

Description: Abstract. In investigating stability of a homogeneous pile it has been customary to assume that the production of bubbles follows the production of power instantaneously. Here we investigate the implications of introduction of an intermediate dissolved gas stage under two hypotheses on the formation of bubbles from this dissolved gas. It is seen that this additional stage tends to make the pile unstable.
Date: June 26, 1945
Creator: Wilkins, J. Ernest, Jr., 1923-2011
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The reversibility theorem for thin airfoils in subsonic and supersonic flow

Description: A method introduced by Munk is extended to prove that the light-curve slope of thin wings in either subsonic flow or supersonic flow is the same when the direction of flight of the wing is reversed. It is also shown that the wing reversal does not change the thickness drag, damping-in-roll parameter or the damping-in-pitch parameter.
Date: June 26, 1949
Creator: Brown, Clinton E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Results of flight tests at supersonic speeds to determine the effect of body nose fineness ratio on body and wing drag

Description: Report presenting flight tests of rocket-powered models at supersonic speeds to determine the effect of nose fineness ratio of winged bodies on total and component drag at high Mach numbers. Wingless models of three nose fineness ratios and winged models of two nose fineness ratios flown through a range of Mach numbers. Results regarding total drag, body drag, and wing drag are provided.
Date: June 26, 1947
Creator: Katz, Ellis R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nitrous Oxide Supercharging of an Aircraft-Engine Cylinder

Description: Report discussing tests to determine the performance of an aircraft engine cylinder using nitrous oxide to provide additional supercharging. The test results of injecting it as a gas and calculated results of injecting it as a liquid are described.
Date: June 26, 1945
Creator: Tauschek, Max J.; Corrington, Lester C. & Huppert, Merle C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Newsmap. For the Armed Forces. 250th week of the war, 132nd week of U.S. participation

Description: Front: Text describes action on various war fronts: France ; Marianas ; Biak ; Japan ; Italy ; Eastern Front ; China ; Southeast Asia. Maps: [Eastern Hemisphere] ; Italy ; Liberated Area of France ; Karelian Isthmus ; [American Advance on Saipan]. Back: Map of the Far East, copyright, National Geographic Society, used by special permission. Scale [ca. 1:10,000,000]. "International Boundaries as of Sept. 1, 1939, the day Germany invaded Poland." Transverse Polyconic Projection.
Date: June 26, 1944
Creator: [United States.] Army Service Forces. Army Information Branch.
Item Type: Refine your search to only Poster
Partner: UNT Libraries Government Documents Department
open access

Effect of Screens in Wide-Angle Diffusers

Description: "An experimental investigation at low airspeeds was made of the filling effect observed when a screen or similar resistance is placed across a diffuser. The filling effect is found to be real in that screens can prevent separation or restore separated flow in diffusers even of extreme divergence and to depend principally on screen location and pressure-drop coefficient of the screen. Results are given for three different diffusers of circular cross section with a variety of screen arrangements.… more
Date: June 26, 1947
Creator: Schubauer, G. B. & Spangenberg, W. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Solubility of Helium in Tuballoy

Description: This technical report summarizes the work done in attempting to determine the solubility of helium in tuballoy. In general, the method used has been to allow the tuballoy to stand in contact with helium at one atmosphere presume at a fixed temperature for an extended period, then to pump off the excess helium to a low pressure in as short a time as possible (10-6 mm of Hg or less). The system was then closed off and the pressure increase was measured by a suitable gauge as a function of time.… more
Date: June 26, 1945
Creator: Seltz , H. & Young, C. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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