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Sense of Time

Description: Lesson plan containing a collection of activities and resources regarding sense of time that meet state education standards and national sustainability standards for the kindergarten grade level.
Date: August 26, 2014
Creator: Parsons, John
Partner: UNT Office of Sustainability
open access

Making a Difference

Description: Lesson plan containing a collection of activities and resources regarding making a difference and that meet state education standards and national sustainability standards for the 4th grade level.
Date: August 29, 2014
Creator: Parsons, John
Partner: UNT Office of Sustainability
open access

Cultural and Social Systems

Description: Lesson plan containing a collection of activities and resources regarding cultural and social systems that meet state education standards and national sustainability standards for the 4th grade level.
Date: August 28, 2014
Creator: Parsons, John
Partner: UNT Office of Sustainability
open access

Full-scale wind-tunnel to determine a satisfactory location for a service Pitot-static tube on a low-wing monoplane

Description: Surveys of the air flow over the upper surface of four different airfoils were made in the full-scale wind tunnel to determine a satisfactory location for a fixed Pitot-static tube on a low-wing monoplane. The selection was based on small interference errors, less than 5 percent, and on a consideration of structural and ground handling problems. The most satisfactory location on the airfoils without flaps that were investigated was 10 percent of the chord aft and 25 percent of the chord above the trailing edge of a section approximately 40 percent of the semispan inboard of the wing tip. No satisfactory location was found near the wing when the flaps were deflected.
Date: March 1936
Creator: Parsons, John F.
Partner: UNT Libraries Government Documents Department
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Full-scale force and pressure-distribution tests on a tapered U.S.A. 45 airfoil

Description: This report presents the results of force and pressure-distribution tests on a 2:1 tapered USA 45 airfoil as determined in the full-scale wind tunnel. The airfoil has a constant-chord center section and rounded tips and is tapered in thickness from 18 percent at the root to 9 percent at the tip. Force tests were made throughout a Reynolds Number range of approximately 2,000,000 to 8,000,000 providing data on the scale effect in addition to the conventional characteristics. Pressure-distribution data were obtained from tests at a Reynolds Number of approximately 4,000,000. The aerodynamic characteristics given by the usual dimensionless coefficients are presented graphically.
Date: March 1935
Creator: Parsons, John F.
Partner: UNT Libraries Government Documents Department
open access

Full scale span load distribution on a tapered wing with split flaps of various spans

Description: Pressure-distribution tests were conducted in the full-scale wind tunnel on a 2:1 tapered U.S.A. 45 airfoil equipped with 20 percent chord split trailing-edge flaps of various spans. A special installation was employed in the tests utilizing a half-span airfoil mounted vertically above a reflection plane. The airfoil has a constant chord center section and rounded tips and is tapered in thickness from 18 percent c at the root to 9 percent c at the tip. The aerodynamic characteristics, given by the usual dimension less coefficients, are presented graphically as functions of flap span and angle of attack as well as by semispan load diagrams. The results indicate, in general, that only a relatively small increase in the normal-force coefficient is to be expected by extending the flap span of an airfoil-flap combination, similar to the one tested, beyond 70 percent of the wing span.
Date: February 1937
Creator: Parsons, John F. & Silverstein, Abe
Partner: UNT Libraries Government Documents Department
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