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  Partner: UNT Libraries Government Documents Department
 Decade: 1940-1949
 Year: 1941
Spirit Leveling in Texas: Part 5. South-central Texas, 1896-1938

Spirit Leveling in Texas: Part 5. South-central Texas, 1896-1938

Date: 1941
Creator: Staack, J. G. (John George), 1878-
Description: Report discussing the figures of elevations determined by spirit leveling across particular quadrangles in Texas.
Contributing Partner: UNT Libraries Government Documents Department
Spirit Leveling in Texas: Part 3. West-central Texas, 1896-1938

Spirit Leveling in Texas: Part 3. West-central Texas, 1896-1938

Date: 1941
Creator: Staack, J. G. (John George), 1878-
Description: Report discussing the figures of elevations determined by spirit leveling across particular quadrangles in Texas.
Contributing Partner: UNT Libraries Government Documents Department
Report of the Chief of the Forest Service: 1941

Report of the Chief of the Forest Service: 1941

Date: 1941
Creator: United States. Forest Service.
Description: Annual report from the U.S. Department of Agriculture Forest Service describing activities of the organization, expenditures and receipts, and a discussion of other relevant topics for the fiscal year.
Contributing Partner: UNT Libraries Government Documents Department
Attwater's Prairie Chicken, its Life History and Management

Attwater's Prairie Chicken, its Life History and Management

Date: 1941
Creator: Lehmann, Valgene W.
Description: Summary of the Attwater's prairie chicken, including differences versus other prairie chickens, habits, habitat, limiting factors, management, and threat of extinction due to exploitation by man.
Contributing Partner: UNT Libraries Government Documents Department
Safety Rules for the Installation and Maintenance of Electric Supply and Communication Lines: Comprising Part 2 and the Grounding Rules of the Fifth Edition, National Electrical Safety Code

Safety Rules for the Installation and Maintenance of Electric Supply and Communication Lines: Comprising Part 2 and the Grounding Rules of the Fifth Edition, National Electrical Safety Code

Date: September 23, 1941
Creator: unknown
Description: A report on the safety rules for the installation and maintenance of electric supply and communication lines.
Contributing Partner: UNT Libraries Government Documents Department
Design of nozzles for the individual cylinder exhaust jet propulsion system

Design of nozzles for the individual cylinder exhaust jet propulsion system

Date: April 1, 1941
Creator: Voss, Fred
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Comparison of Vee-Type and Conventional Tail Surfaces in Combination with Fuselage and Wing in the Variable-Density Tunnel

Comparison of Vee-Type and Conventional Tail Surfaces in Combination with Fuselage and Wing in the Variable-Density Tunnel

Date: July 1, 1941
Creator: Greenberg, Harry
Description: The pitching and the yawing moments of a vee-type and a conventional type of tail surface were measured. The tests were made in the presence of a fuselage and a wing-fuselage combination in such a way as to determine the moments contributed by the tail surfaces. The results showed that the vee-type tail tested, with a dihedral angle of 35.3 deg, was about 71 percent as effective in pitch as the conventional tail and had a yawing-moment to pitching-moment ratio of 0.3. The conventional tail, the panels of which were all congruent to those of the vee-type tail, had a yawing-moment to pitching-moment ratio of 0.48. These ratios are in fair agreement with values calculated by methods shown in this and previous reports. The values of the measured moments were reduced from 15 to 25 percent of the calculated value by fuselage interference.
Contributing Partner: UNT Libraries Government Documents Department
Effects of some present-day airplane design trends on requirements for lateral stability

Effects of some present-day airplane design trends on requirements for lateral stability

Date: June 1, 1941
Creator: Bamber, Millard J
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Methods of analyzing wind-tunnel data for dynamic flight conditions

Methods of analyzing wind-tunnel data for dynamic flight conditions

Date: October 1, 1941
Creator: Donlan, C J & Recant, I G
Description: The effects of power on the stability and the control characteristics of an airplane are discussed and methods of analysis are given for evaluating certain dynamic characteristics of the airplane that are not directly discernible from wind-tunnel tests alone. Data are presented to show how the characteristics of a model tested in a wind tunnel are affected by power. The response of an airplane to a rolling and a yawing disturbance is discussed, particularly in regard to changes in wing dihedral and fin area. Solutions of the lateral equations of motion are given in a form suitable for direct computations. An approximate formula is developed that permits the rapid estimation of the accelerations produced during pull-up maneuvers involving abrupt elevator deflections.
Contributing Partner: UNT Libraries Government Documents Department
Spin tests of two models of a low-wing monoplane to investigate scale effect in the model test range

Spin tests of two models of a low-wing monoplane to investigate scale effect in the model test range

Date: May 1, 1941
Creator: Donlan, Charles C
Description: None
Contributing Partner: UNT Libraries Government Documents Department
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