Search Results

open access

[Letter from Charles B. Moore to Will Boyd, November 3, 1873]

Description: Letter from Charles B. Moore in Collin County to Will Boyd, Phelps, Missouri discussing the poor crops that year, including corn and wheat and the slightly better cotton. He discusses the large volume of emigrants entering the area looking for cheap land who are willing to work. He mentions a visit from Uncle Bill Moore from Atlanta, Aunt Polly Winham from Jerseyville, Illinois, and other family members.
Date: November 3, 1873
Creator: Moore, Charles B.
Partner: UNT Libraries Special Collections
open access

[Letter from Charles B. Moore to Mary Moore, November 3 - 4, 1897]

Description: Letter from Charles B. Moore to his wife Mary in which he expresses happiness that she is out of danger of contracting "yellow jack" (yellow fever). He hopes that Mary will be able to visit with Sally Thornhill. He says that he went to town with Linnet to buy flour, shoes, and other supplies. He said that he has acquired a new supply of pork. He states that it is hard to make up a party as boarding schools have taken so many of the young people away from the neighborhood. He updates Mary on th… more
Date: November 3, 1897
Creator: Moore, Charles B.
Partner: UNT Libraries Special Collections
open access

Proton Angular Distribution for 90 Mev Neutron-proton Scattering

Description: The angular distribution of the recoil protons in neutron-proton scattering at 90 Mev has been measured for angles between 5{sup o} and 65{sup o} from the direction of the neutron beam. The neutrons were produced by stripping 190 Mev deuterons in a 1/2 inch Be target in the 184-inch F.M. cyclotron. R. Serber has calculated the neutron energy distribution; it has a peak at 90 Mev and a half width of 27 Mev. This distributiQn has been checked experimentally for the neutrons by Wilson Powell and b… more
Date: November 3, 1947
Creator: Hadley, James; Leith, Cecil E. & York, Herbert F.
Partner: UNT Libraries Government Documents Department
open access

Investigation of interaction effects arising from side-wall boundary layers in supersonic wind-tunnel tests of airfoils

Description: Report presenting an investigation to determine the cause for a discrepancy between theoretical and experimental pressure distributions found during a two-dimensional investigation of flapped airfoils in a 2- by 8-inch supersonic tunnel. The results indicated that a tunnel-boundary-layer and model-flow interaction effect on the flow over models mounted directly from the walls in supersonic wind tunnels exists.
Date: November 3, 1948
Creator: Czarnecki, K. R. & Schueller, C. F.
Partner: UNT Libraries Government Documents Department
open access

Preliminary Correlation of the Effect of Compressibility on the Location of the Section Aerodynamic Center at Subcritical Speeds

Description: Memorandum presenting a correlation of available two-dimensional airfoil data to determine the effects of compressibility on the location of the section aerodynamic center at low lift coefficients. The results indicate that large forward or rearward movements of the aerodynamic center with Mach number are possible.
Date: November 3, 1948
Creator: Polhamus, Edward C.
Partner: UNT Libraries Government Documents Department
open access

Pressure Distributions Over a Wing-Fuselage Model at Mach Numbers of 0.4 to 0.99 and at 1.2

Description: Report presenting pressure distributions over a prolate spheroid of fineness ratio 6 and over a combination of this body with an NACA 65-010 wing section for a range of Mach numbers. Results regarding wall and sting interference, nature of flow over a model in the transonic region, development of supersonic flow from subsonic flow, and a comparison of experimental and theoretical flow at subsonic stream Mach numbers are provided.
Date: November 3, 1948
Creator: Matthews, Clarence W.
Partner: UNT Libraries Government Documents Department
open access

Analytical determination of effect of water injection on power output of turbine-propeller engine

Description: From Introduction: "Water injection at the compressor inlet has been successfully used to increase the thrust of turbojet engines. References 1 and 2 indicate that the sea-level static thrust of a centrifugal-flow-type turbojet engine may be increased about 25 percent by use of liquid injection. Reference 3 indicates that greater thrust augmentation is possible at a compressor pressure ratio of 11 than of 4."
Date: November 3, 1949
Creator: Ross, Albert O. & Huppert, Merle C.
Partner: UNT Libraries Government Documents Department
open access

General Characteristics of a Airspeed System using Fuselage Static Vents on a Swept-Wing Airplane

Description: "Studies have been made by the NACA wing-flow method of the use of fuselage static orifices between the wing and tail of a swept-wing airplane for possible application to service airspeed installations. The tests were made at zero angle of attack. The results indicate that, although the maximum errors are large, these locations are usable from the consideration that the local Mach numbers at the locations studied are sensitive to variation of the true Mach number within the test Mach number ran… more
Date: November 3, 1949
Creator: Johnston, J. Ford & O'Bryan, Thomas C.
Partner: UNT Libraries Government Documents Department
open access

Vibration of loosely mounted turbine blades during service operation of a turbojet engine with centrifugal compressor and straight-flow combustion chambers

Description: Report presenting an experimental investigation to determine the vibration characteristics of loosely mounted turbine blades during service operation of a turbojet engine. High-temperature strain gages were used to measure turbine-blade vibrations. Results regarding oscillograph records, critical speeds and frequencies, vibratory-stress levels, and effect of tightening the blade mount are provided.
Date: November 3, 1949
Creator: Morgan, W. C.; Kemp, R. H. & Manson, S. S.
Partner: UNT Libraries Government Documents Department
open access

Fundamental flame velocities of pure hydrocarbons 2: alkadienes

Description: Data are presented for the fundamental flame velocities of 10 pure alkadienes that have isolated, conjugated, or cumulative double-bond systems. On the basis of this limited amount of data and the flame velocities previously reported, it is concluded that unsaturation changes the flame velocity in the order alkanes ? alkenes ? alkadienes with isolated double bonds ?= alkadienes with conjugated double bonds ? alkadienes with cumulative double bonds ?= alkynes. There were no significant differenc… more
Date: November 3, 1950
Creator: Levine, Oscar; Wong, Edgar L. & Gerstein, Melvin
Partner: UNT Libraries Government Documents Department
Back to Top of Screen