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299
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85
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The Enterprise (Mercedes, Tex.), Vol. 34, No. 18, Ed. 1 Thursday, May 1, 1947
Weekly newspaper from Mercedes, Texas that includes local, state, and national news along with advertising.
Date:
May 1, 1947
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Equipment for Parking Meter Repair in Oklahoma City, Oklahoma
Photograph of equipment used for straightening a parking meter in Oklahoma City, Oklahoma. Park-O-Meter Acct.
Date:
May 1947
Creator:
Meyers Photo Shop
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Experimental and calculated characteristics of several NACA 44-series wings with aspect ratios of 8, 10, and 12 and taper ratios of 2.5 and 3.5
The aerodynamic characteristics of seven unswept tapered wings were determined by calculation from two-dimensional data and by wind-tunnel tests in order to demonstrate the accuracy of the calculations and to show some of the effects of aspect ratio, taper ratio, and root thickness-chord ratio. The characteristics were calculated by the usual application of the lifting-line theory which assumes linear section lift curves and also by an application of the theory which allows the use of nonlinear lift curves. A correction to the lift for the effect of chord was made by using the Jones edge-velocity factor. The wings had aspect ratios of 8, 10, and 12, taper ratios of 2.5 and 3.5, and NACA 44-series airfoils.
Date:
May 1947
Creator:
Neely, Robert H.; Bollech, Thomas V.; Westrick, Gertrude C. & Graham, Robert R.
Object Type:
Report
System:
The UNT Digital Library
Experimental determination of the damping in roll and aileron rolling effectiveness of three wings having 2 degree, 42 degree and 62 degree sweepback
Report presenting tests to determine the damping in roll and aileron rolling effectiveness of three wings with different degrees of sweepback. The results showed that the values of damping in roll decreased with increasing sweepback. The rolling effectiveness of the aileron of the sweptback wing was found to be predicted with fair accuracy from static aileron-rolling-moment tests and wing-damping tests.
Date:
May 1947
Creator:
Bennett, Charles V. & Johnson, Joseph L.
Object Type:
Report
System:
The UNT Digital Library
Experimental Soil-cement
Caption says, "5-AL-597. Experimental soil-cement lining. Elevated view of the Ekenstam Canal Paver in operation on the West 11.5 Lateral. The paver underwent extensive modifications after these photographs were made."
Date:
May 1, 1947
Creator:
Parker, D. B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Experimental Soil-cement
Caption says, "5-AL-599. Experimental soil-cement lining. Front view of Chattin Ditcher in the West 11.5 Lateral. An attempt was made to use this ditcher to line the lateral with soil-cement during the period that necessary modifications were being made on the Ekenstam Canal Paver."
Date:
May 1, 1947
Creator:
Parker, D. B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Experimental Soil-cement
Caption says, "5-AL-600. Experimental soil-cement lining. Rear view of the Chattin Ditcher in the West 11.5 Lateral. An attempt was made to use this ditcher to line the lateral with soil-cement during the period that necessary modifications were being made on the Ekenstam Canal Paver."
Date:
May 1, 1947
Creator:
Parker, D. B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Experimental Soil-cement
Caption says, "5-Al-595.Experimental soil-cement lining. Rear view of the Ekenstam Canal Paver in operation. Workmen on rear wings of the paver finish the soil cement lining as the paver moves forward."
Date:
May 1, 1947
Creator:
Parker, D. B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Experimental Soil-cement
Caption says, "5-AL-594. Experimental soil-cement lining. Rear view of the Ekenstam Canal Paver in operation. Workmen on rear wings of the paver finish the soil cement lining as the paver moves forward."
Date:
May 1, 1947
Creator:
Parker, D. B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Experimental Soil-cement
Caption says, "5-AL-596. Experimental soil-cement lining. Elevated view of the Ekenstam Canal Paver in operation on the West 11.5 Lateral. The paver underwent extensive modifications after these photographs were made."
Date:
May 1, 1947
Creator:
Parker, D. B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Experimental Soil-cement
Caption says, "5-AL-601. Experimental soil-cement lining. Elevated view of the Chattin Ditcher in the West 11.5 Lateral. An attempt was made to use this ditcher to line the lateral with soil-cement during the period that the Ekenstam paver was undergoing necessary modifications."
Date:
May 1, 1947
Creator:
Parker, D. B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Exploratory Investigation of Laminar-Boundary-Layer Oscillations on a Rotating Disk
Sinusoidal waves excited by random disturbances have been observed in the laminar boundary layer of a rotating disk at Reynolds numbers in a narrow range below the Reynolds number of transition. Their frequency was found to be approximately a constant times the velocity of the disk. The velocity of the waves at the radius of 11 inches was determined and found to be 0.2 linear velocity of the disk in a downstream direction, making an angle of approximately 14 degrees with the outward drawn radius vector.
Date:
May 1947
Creator:
Smith, Newell H.
Object Type:
Report
System:
The UNT Digital Library
The Fairfield Recorder (Fairfield, Tex.), Vol. 71, No. 32, Ed. 1 Thursday, May 1, 1947
Weekly newspaper from Fairfield, Texas that includes local, state, and national news along with advertising.
Date:
May 1, 1947
Creator:
Kirgan, Lee
Object Type:
Newspaper
System:
The Portal to Texas History
The Flatonia Argus (Flatonia, Tex.), Vol. 72, No. 18, Ed. 1 Thursday, May 1, 1947
Weekly newspaper from Flatonia, Texas that includes local, state, and national news along with extensive advertising.
Date:
May 1, 1947
Creator:
Bridges, George W.
Object Type:
Newspaper
System:
The Portal to Texas History
Flight investigation of the effects on airplane static longitudinal stability of a bungee and engine-tilt modifications
Report presenting flight tests to evaluate an elevator stick-force bungee and engine tilt as methods of improving the longitudinal-control characteristics of an existing airplane. The stick-force bungee was found to be the simplest and most effective modification.
Date:
May 1947
Creator:
Rathert, George A., Jr.
Object Type:
Report
System:
The UNT Digital Library
Flight tests of a double-hinged horizontal tail surface with reference to longitudinal-stability and control characteristics
Report presenting testing of a double-hinged horizontal tail on a small low-speed airplane to determine the longitudinal stability and control characteristics. The flying characteristics of the airplane equipped with the double-hinged horizontal tail surface were generally satisfactory. The primary effect of removal of the elevator seal was a decrease in the elevator effectiveness.
Date:
May 1947
Creator:
Hanson, Carl M. & Anderson, Seth B.
Object Type:
Report
System:
The UNT Digital Library
Flight tests of an airplane model with 42 degree swetpback wing in the Langley free-flight tunnel
Report presenting power-off flight tests in the free-flight tunnel to determine the dynamic stability characteristics of an airplane model with a 42 degree sweptback wing of aspect ratio 5.9 and taper ratio 0.5. The static-stability and wing-stall characteristics of the model were also determined. Results regarding force tests, flow surveys, and flight tests are provided.
Date:
May 1947
Creator:
Maggin, Bernard & Bennett, Charles V.
Object Type:
Report
System:
The UNT Digital Library
Flight tests of an airplane model with a 62 degree swept-back wing in the Langley free-flight tunnel
Report presenting a flight investigation in the free-flight tunnel to determine the severity of the dynamic stability and control problems associated with 62 degrees sweepback. In addition to the flight tests, force tests and tuft tests were made to determine the static-stability and wing-stall characteristics, and calculations were made to determine the boundary of zero damping of the lateral oscillation.
Date:
May 1947
Creator:
Maggin, Bernard & Bennett, Charles V.
Object Type:
Report
System:
The UNT Digital Library
The Forgan Advocate (Forgan, Okla.), Vol. 20, No. 1, Ed. 1 Thursday, May 1, 1947
Weekly newspaper from Forgan, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 1, 1947
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Freedom Call (Freedom, Okla.), Vol. 24, No. 31, Ed. 1 Thursday, May 1, 1947
Weekly newspaper from Freedom, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 1, 1947
Creator:
Hinton, Mrs. Ruth
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Friction Coefficients in a Vaneless Diffuser
Note presenting a determination of friction coefficients for three constant-area vaneless diffusers, used in conjunction with a centrifugal impeller, from static- and total-pressure surveys taken at several radii and from the usual overall measurements of temperature, pressure, and air flow. The average value of the friction coefficient through the entire diffuser was approximately 50 percent higher than that for fully developed turbulent flow in smooth pipes.
Date:
May 1947
Creator:
Brown, W. Byron
Object Type:
Report
System:
The UNT Digital Library
Fruehauf Trailer Co.
Photograph of Fruehauf Trailer Co., 1500 W Reno, Oklahoma City, OK. Photo taken by Meyers Photo Shop for Fruehauf Trailer Co., May 1947.
Date:
May 1947
Creator:
Meyers Photo Shop
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Full-scale investigation of the aerodynamic characteristics of a typical single-rotor helicopter in forward flight
Report presenting an investigation of the forward-flight performance characteristics of a typical single-rotor helicopter equipped with main and tail rotors. Testing occurred over a range of tip-speed ratios and thrust coefficients. Results regarding the fuselage effects and rotor characteristics are provided.
Date:
May 1947
Creator:
Dingeldein, Richard C. & Schaefer, Raymond F.
Object Type:
Report
System:
The UNT Digital Library
Fundamentals of the Control of Gas-Turbine Power Plants for Aircraft, Part 3: Control of Jet Engines
"The basic principles of the control of TL engines are developed on the basis of a quantitative investigation of the behavior of these behavior under various operating conditions with particular consideration of the simplifications permissible in each case. Various possible means of control of jet engines are suggested and are illustrated by schematic designs" (p. 1).
Date:
May 1947
Creator:
Kühl, H.
Object Type:
Report
System:
The UNT Digital Library