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  Partner: UNT Libraries Government Documents Department
 Decade: 1940-1949
 Collection: Technical Report Archive and Image Library
Nomograms for Obtaining the Compound Composition of Hydrated Limes from the Oxide Analysis

Nomograms for Obtaining the Compound Composition of Hydrated Limes from the Oxide Analysis

Date: December 30, 1949
Creator: Levin, Ernest M.
Description: Report with two nomograms presented for rapidly obtaining the compound composition of hydrated limes from the oxide analysis. The general nomogram can be applied to any commercial hydrated lime and gives values accurate to within 0.3 percent while the special nomogram is applicable only to regularly hydrated and highly hydrated dolomitic limes and is accurate to within 0.1 percent.
Contributing Partner: UNT Libraries Government Documents Department
Ditching Investigation of a 1/18-Scale Model of the North American B-45 Airplane

Ditching Investigation of a 1/18-Scale Model of the North American B-45 Airplane

Date: December 22, 1949
Creator: Fisher, Lloyd J. & Thompson, William C.
Description: An investigation of a 1/18-scale dynamically similar model of the North American B-45 airplane was made to observe the ditching behavior and determine the proper landing technique to be used in an emergency water landing. Various conditions of damage were simulated to determine the behavior which probably would occur in a full-scale ditching. The behavior of the model was determined from high-speed motion-picture records, time-history acceleration records, and visual observations. It was concluded that the airplane should be ditched at the maximum nose-high attitude with the landing flaps full down for minimum landing speed. During the ditching, the nose-wheel and bomb-bay doors probably will be torn away and the rear of the fuselage flooded. A violent dive will very likely occur. Longitudinal decelerations of approximately 5g and vertical accelerations of approximately -6g (including gravity) will be experienced near the pilots' compartment. Ditching braces installed in the bomb bay will tend to improve the behavior slightly but will be torn away along with the bomb-bay doors. A hydroflap installed ahead of the nose-wheel doors will eliminate the dive and failure of the nose-wheel doors, and substantially reduce the motions and accelerations.
Contributing Partner: UNT Libraries Government Documents Department
Flight Test of the Aerojet 7KS-6000 T-27 Jato Rocket Motor

Flight Test of the Aerojet 7KS-6000 T-27 Jato Rocket Motor

Date: December 20, 1949
Creator: Bond, Aleck C. & Thibodaux, Joseph G., Jr.
Description: A flight test of the Aero jet Engineering Corporation's 7KS-6000 T-27 Jato rocket motor was conducted at the Langley Pilotless Aircraft Research Station at Wallops Island, Va, to determine the flight performance characteristics of the motor. The flight test imposed an absolute longitudinal acceleration of 9.8 g upon the rocket motor at 2.8 seconds after launching. The total impulse developed by the motor was 43,400 pound-seconds, and the thrusting time was 7.58 seconds. The maximum thrust was 7200 pounds and occurred at 4.8 seconds after launching. No thrust irregularities attributable to effects of the flight longitudinal acceleration were observed. Certain small thrust irregularities occurred in the flight test which appear to correspond to irregularities observed in static tests conducted elsewhere. A hypothesis regarding the origin of these small irregularities is presented.
Contributing Partner: UNT Libraries Government Documents Department
A free-flight technique for measuring damping in roll by use of rocket-powered models and some initial results for rectangular wings

A free-flight technique for measuring damping in roll by use of rocket-powered models and some initial results for rectangular wings

Date: December 20, 1949
Creator: Edmondson, James L & Sanders, E Claude, Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Comparison of effectiveness of coordinated turns and level sideslips for correcting lateral displacement during landing approaches

Comparison of effectiveness of coordinated turns and level sideslips for correcting lateral displacement during landing approaches

Date: December 15, 1949
Creator: Faber, Stanley
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Low-speed investigation of deflectable wing-tip ailerons on an untapered 45 degrees sweptback semispan wing with and without an end plate

Low-speed investigation of deflectable wing-tip ailerons on an untapered 45 degrees sweptback semispan wing with and without an end plate

Date: December 14, 1949
Creator: Fischel, Jack & Watson, James M
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Preliminary investigation of a variable mass-flow supersonic nose inlet

Preliminary investigation of a variable mass-flow supersonic nose inlet

Date: December 13, 1949
Creator: Hayes, Clyde
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Comparative tests of the rolling effectiveness of constant-chord, full-delta, and half-delta ailerons on delta wings at transonic and supersonic speeds

Comparative tests of the rolling effectiveness of constant-chord, full-delta, and half-delta ailerons on delta wings at transonic and supersonic speeds

Date: December 12, 1949
Creator: Sandahl, Carl A & Strass, H Kurt
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Experimental investigation at supersonic speeds of side scoops employing boundary-layer suction

Experimental investigation at supersonic speeds of side scoops employing boundary-layer suction

Date: December 12, 1949
Creator: Edwards, Sherman S
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effects of scale and test technique on the validity of small-scale measurements of the aerodynamic characteristics of a wing with the leading edge swept back 63 degrees

The effects of scale and test technique on the validity of small-scale measurements of the aerodynamic characteristics of a wing with the leading edge swept back 63 degrees

Date: December 9, 1949
Creator: Rolls, L Stewart
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An empirical criterion for fin stabilizing jettisonable nose sections of airplanes

An empirical criterion for fin stabilizing jettisonable nose sections of airplanes

Date: December 8, 1949
Creator: Scher, Stanley H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Investigation of a thin wing of aspect ratio 4 in the Ames 12-foot pressure wind tunnel V : static longitudinal stability and control throughout the subsonic speed range of a semispan model of a supersonic airplane

Investigation of a thin wing of aspect ratio 4 in the Ames 12-foot pressure wind tunnel V : static longitudinal stability and control throughout the subsonic speed range of a semispan model of a supersonic airplane

Date: December 8, 1949
Creator: Johnson, Ben H , Jr & Rollins, Francis W
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Full-Scale Hydrodynamic Evaluation of a Modified Navy J4F-2 Amphibian with a 0.425-Scale XP5M-1 Hull Bottom. TED No. NACA DE325

Full-Scale Hydrodynamic Evaluation of a Modified Navy J4F-2 Amphibian with a 0.425-Scale XP5M-1 Hull Bottom. TED No. NACA DE325

Date: December 7, 1949
Creator: Land, Norman S.; Elliott, John M. & Christopher, Kenneth W.
Description: An investigation was made to evaluate the hydrodynamic qualities of a 0.425-scale model of the Navy XP5M-1 hull, which was installed on a modified Navy J4F-2 amphibian. Longitudinal and directional stability during take-off and landing, low-speed maneuverability, spray characteristics, and take-off performance were investigated. The behavior of the airplane in moderately rough water was also observed. The opinions of three pilots have been correlated with the data.
Contributing Partner: UNT Libraries Government Documents Department
Aerodynamic study of a wing-fuselage combination employing a wing swept back 63 degrees : effects at subsonic speeds of a constant-chord elevon on a wing cambered and twisted for a uniform load at a lift coefficient of 0.25

Aerodynamic study of a wing-fuselage combination employing a wing swept back 63 degrees : effects at subsonic speeds of a constant-chord elevon on a wing cambered and twisted for a uniform load at a lift coefficient of 0.25

Date: December 5, 1949
Creator: Jones, J Lloyd & Demele, Fred A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Investigation of altitude performance of AN-F-58 fuels in annular combustor of J34-WE-22 engine

Investigation of altitude performance of AN-F-58 fuels in annular combustor of J34-WE-22 engine

Date: December 5, 1949
Creator: Tischler, Adelbert O & Scull, Wilfred E
Description: An investigation was conducted in the combustor of a 3000-pound-thrust turbojet engine to determine the altitude performance characteristics of AN-F-58 fuels. Three fuels conforming to AN-F-58 specification were prepared in order to determine the influence of boiling-temperature range and aromatic content on altitude performance. The performance of the three AN-F-58 fuels was compared with the performance of AN-F-48 (grade 100/130) fuel in the range of simulated altitudes from 20,000 to 55,000 feet, corrected engine speeds from 6000to 12,500 rpm, and flight Mach numbers of 0.2 and 0.6.
Contributing Partner: UNT Libraries Government Documents Department
Survey of two-dimensional data on pitching-moment changes near maximum lift caused by deflection of high-lift devices

Survey of two-dimensional data on pitching-moment changes near maximum lift caused by deflection of high-lift devices

Date: December 2, 1949
Creator: Bidwell, Jerold M & Cahill, Jones F
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Aerodynamic characteristics of the NACA 8-H-12 airfoil section at six Reynolds numbers from 1.8 x 10(exp 6) to 11.0 x 10(exp 6).

Aerodynamic characteristics of the NACA 8-H-12 airfoil section at six Reynolds numbers from 1.8 x 10(exp 6) to 11.0 x 10(exp 6).

Date: December 1, 1949
Creator: Schaefer, Raymond F & Smith, Hamilton A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Analysis of means of improving the uncontrolled lateral motions of personal airplanes

Analysis of means of improving the uncontrolled lateral motions of personal airplanes

Date: December 1, 1949
Creator: Mckinney, Marion O , Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of airfoil section and tip tanks on the aerodynamic characteristics at high subsonic speeds of an unswept wing of aspect ratio 5.16 and taper ratio 0.61

Effect of airfoil section and tip tanks on the aerodynamic characteristics at high subsonic speeds of an unswept wing of aspect ratio 5.16 and taper ratio 0.61

Date: December 1, 1949
Creator: SILVERS H NORMAN & Spreeman, Kenneth P
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Experimental investigation of flutter of a propeller with Clark Y section operating at zero forward velocity at positive and negative blade- angle settings

Experimental investigation of flutter of a propeller with Clark Y section operating at zero forward velocity at positive and negative blade- angle settings

Date: December 1, 1949
Creator: Baker, John E & Paulnock, Russell S
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Investigation of Christy Titanium Deposit, Hot Spring County, Arkansas

Investigation of Christy Titanium Deposit, Hot Spring County, Arkansas

Date: December 1949
Creator: Reed, Donald F.
Description: Report issued by the Bureau of Mines over titanium deposits on the Christy property in Arkansas. Details of the location, and drilling methods are presented. This report includes tables, maps, illustrations, and photographs.
Contributing Partner: UNT Libraries Government Documents Department
Investigation of Magnet Cove Rutile Deposit, Hot Spring County, Arkansas

Investigation of Magnet Cove Rutile Deposit, Hot Spring County, Arkansas

Date: December 1949
Creator: Reed, Donald F.
Description: Report issued by the Bureau of Mines on the exploration of the Magnet Cove Rutile deposits. Descriptions of the deposit, and characteristics of the pyrite, titanium, and mineral ore are presented. This report includes tables, maps, and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Investigation of the Huber-Rydalch Manganese Deposits, Tooele County, Utah

Investigation of the Huber-Rydalch Manganese Deposits, Tooele County, Utah

Date: December 1949
Creator: Fry, Eugene & Wilson, Stephen R.
Description: Report issued by the Bureau of Mines on the manganese deposits in Tooele County, Utah. The physical features, geology, and descriptions of the deposit samples are listed. This report includes tables, and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Investigation of the Yellow Pine Zinc-Lead Mine, Clark County, Nevada

Investigation of the Yellow Pine Zinc-Lead Mine, Clark County, Nevada

Date: December 1949
Creator: Geehan, Robert W. & Benson, Willmar T.
Description: Report issued by the Bureau of Mines regarding studies conducted on zinc-lead mines in Clark County, Nevada. Physical qualities of the mine, equipment used, and methods of sampling are presented. This report includes tables, and maps.
Contributing Partner: UNT Libraries Government Documents Department
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