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The Distribution of the Positive-Negative Ratio for Mesons

Description: Positive and negative mesons produced in a common target in the cyclotron are received in two photographic plates. In the magnetic field of the cyclotron, negatives are deflected to one plate, positives to the other. The mesons must pass through an absorber before entering the plates in order to be observable.
Date: December 14, 1949
Creator: Rankin, Bayard, 1924-
Item Type: Refine your search to only Report
open access

Low-Speed Investigation of Deflectable Wing-Tip Ailerons on an Untapered 45 Degrees Sweptback Semispan Wing With and Without an End Plate

Description: Report presenting a low-speed wind-tunnel investigation to determine the characteristics of deflectable wing-tip ailerons on an untapered 45 degree sweptback semispan wing. Ailerons with triangular and parallelogram plan forms with a maximum chord of 0.625 wing chord and a flat-plat profile were investigated. The aerodynamic characteristics in pitch and lateral control characteristics are included.
Date: December 14, 1949
Creator: Fischel, Jack & Watson, James M.
Item Type: Refine your search to only Report
open access

Estimation of the forces and moments acting on inclined bodies of revolution of high fineness ratio

Description: Report presenting a discussion of the aerodynamic forces and moments on inclined bodies of revolution. An approximate theory to allow for the effects of viscosity is developed and applied. Results regarding the variation of lift and pitching moment, and center of gravity are provided.
Date: November 14, 1949
Creator: Allen, H. Julian
Item Type: Refine your search to only Report
open access

The Effects of Horizontal-Tail Location and Wing Modifications on the High-Speed Stability and Control Characteristics of a 01.17-Scale Model of the McDonnell XF2H-1 Airplane (TED No, NACA DE336)

Description: "An additional series of high-speed wind-tunnel tests of a modified 0.17-scale model of the McDonnell XF2H-1 airplane was conducted to evaluate the effects of a reduction in the thickness-to-chord ratios of the tail planes, the displacement of the horizontal tail relative to the vertical tail, and the extension of the trailing edge of the wing. Two tail-intersection fairings designed to improve the flow at the tail were also tested. The pitching-moment characteristics of the model were improved… more
Date: October 14, 1949
Creator: Emerson, Horace F. & Axelson, John A.
Item Type: Refine your search to only Report
open access

An Investigation at Low Speed of a Large-Scale Triangular Wing of Aspect Ratio Two 3: Characteristics of Wing With Body and Vertical Tail

Description: Report presenting an investigation to determine the aerodynamic characteristics in sideslip of a triangular wing of aspect ratio 2.04 in combination with a body of fineness ratio 12.5 and a vertical tail surface. The body combined with the triangular plan-form wing caused no significant changes in the lift characteristics of the wing and only a 1-percent decrease in the static margin. Results regarding the longitudinal characteristics, lateral and directional characteristics, and estimation of … more
Date: October 14, 1949
Creator: Anderson, Adrien E.
Item Type: Refine your search to only Report
open access

A comparison of theoretical and experimental loading on a 63 degrees swept-back wing at supersonic speeds

Description: Report presenting the pressure distribution over a highly swept wing at supersonic speeds to provide data for a comparison of measured and predicted loadings. The wing for this investigation had 63 degrees of sweepback of the leading edge, an aspect ratio of 3.5, and a taper ratio of 0.25. Over the regions influenced by the wing tip and trailing edge, the effects of viscosity apparently are responsible for the poorer agreement between theory and experiment.
Date: September 14, 1949
Creator: Stevens, Victor I. & Boyd, John W.
Item Type: Refine your search to only Report
open access

234-5 status reports

Description: On July 14, 1949, and office memorandum was written about operations of a reprocessing building on the Hanford Site being suspended due to the mishandling of some plutonium powder. The letter describes the process of decontamination of the building surfaces, and the ventilation of the rooms of that building. It also describes the problem with the ventilation fans due to increased temperature and pressures.
Date: July 14, 1949
Creator: Lowe, W. W.
Item Type: Refine your search to only Report
open access

Effects of several leading-edge modifications on the stalling characteristics of a 45 degree swept-forward wing

Description: Report presenting an investigation to determine the effects of several leading-edge modifications on the maximum lift and pitching-moment characteristics on a large-scale 45 degree swept-forward wing. A full-span leading-edge flap deflected 30 degrees down tended to give the largest gain of maximum lift. Results regarding the plain leading-edge flaps and cambered nose are explored.
Date: June 14, 1949
Creator: McCormack, Gerald M. & Cook, Woodrow L.
Item Type: Refine your search to only Report
open access

Redox Committee: Conference notes and recommendations, meeting of June 13, 1949

Description: Recommendations discussed included the transfer of Waste Metal Recovery from the Kellex Corporation; the Kellex contract revisions for their work on the design of the Redox Production Plant; procurement and inspection procedures; aluminum nitrate supply and procurement; and waste recovery with the tributyl phosphate and hexane process.
Date: June 14, 1949
Creator: Greager, O. H.; MacCready, W. K. & Seckendorff, E. W.
Item Type: Refine your search to only Report
open access

The Development of Equipment for the Continuous Burning and Leaching of Ground Carbon

Description: Equipment was developed for the continuous burning and leaching of ground carbon in order to recover uranium for the proposed Closed Cycle Beta Process. The burning apparatus consisted of a vertical tube with a grate to support the carbon. An uppdraft of air was used to support combustion. The burning rate of the apparatus was 500 grams of carbon per hour; combustion averaged over 98% complete. The leacher consisted of a heated nitric acid bath divided in four compartments through which ground … more
Date: April 14, 1949
Creator: Petretzky, P. B.; Twichell, L. P.; Williams, R. D. & Waldrop, F. B.
Item Type: Refine your search to only Report
open access

P Division monthly report, March 1949

Description: This progress report discusses activities at P Division for the month of March, 1949. All piles operated at 275 megawatts throughout the month except for the outages listed under Area Activities in this report. The average time operating efficiency''was 91.4%. A total of 47 tons of metal was discharged from the piles during the month. During the month, 16.6 tons of alpha-rolled, triple-dipped metal were discharged without difficulty at a nominal concentration of 320 megawatts day (MWD) per ton.… more
Date: April 14, 1949
Creator: Lee, Edward P.
Item Type: Refine your search to only Report
open access

A study of proposed semi-parallel and complete parallel operations of the Canyon and concentration Buildings, 200 Areas

Description: Due to a forecasted increase in pile area production as well as a possible decrease in batch size of the separations process, an increase in the capacities of the separations plants is indicated. It is the purpose of this report to review this relationship in the light of existing data and to determine how this additional capacity can best be attained through the use of either the proposed semiparallel or complete parallel methods of operation. Emphasis will necessarily be given to consideratio… more
Date: April 14, 1949
Creator: Hollenbach, S. A.
Item Type: Refine your search to only Report
open access

Investigation of a thin straight wing of aspect ratio 4 by the NACA wing-flow method: Lift and pitching-moment characteristics of the wing alone

Description: This report presents measurements of the lift and pitching-moment characteristics of a straight wing of aspect ratio 4, taper ratio 0.5, having a symmetrical double-wedge airfoil section with a maximum thickness of 4.4-percent chord. The tests were conducted in the Mach number range 0.51 to 1.20, Reynolds numbers 380,000 to 660,000, by the NACA wing-flow method. The results are compared with theory and with wind-tunnel tests of a similar model. It is indicated that in the Mach number range 0.82… more
Date: February 14, 1949
Creator: Rathert, George A., Jr.; Hanson, Carl M. & Rolls, L. Stewart
Item Type: Refine your search to only Report
open access

High-Speed Wind-Tunnel Investigation of a Sweptback Wing With an Added Triangular Area at the Center

Description: Report discussing an investigation of two sweptback wings of different plan form in order to determine the effects of adding a triangular area to the inboard section of a conventional sweptback wing as a way to create a wing with two stages of sweepback. Lift, drag, and pitching-moment characteristics are provided for a range of Mach numbers.
Date: January 14, 1949
Creator: Henry, Beverly Z., Jr.
Item Type: Refine your search to only Report
open access

P Division monthly report, December 1948

Description: This progress report discusses activities at the P Division for the month of December 1948. All piles operated at 275 megawatts throughout the month except for the outages listed under Area activities in this report. An unscheduled power outage occurred in the 300 Area on December 2. No difficulties were encountered except for the lost operating time. A total of 103 tons of metal was discharged from the piles during the month. Operating schedules in the 300 Area were reduced from a six-day week… more
Date: January 14, 1949
Creator: Lee, Edward P.
Item Type: Refine your search to only Report
open access

The Path of Carbon in Photosynthesis IV. The Identity and Sequencefo the Intermediates in Sucrose Synthesis

Description: The synthesis of sucrose from C{sup 14}0{sub 22} by green algae has been investigated and the intermediates separated by the method of paper chromatography. It is shown that sucrose is the first free sugar appearing during photosynthesis. It is apparently formed by condensation of the glucose-I-phosphate and a fructose phosphate. A series of radioautographs of paper chromatograms of extracts from plants which have photosynthesized for different periods of time has been prepared. The results ind… more
Date: December 14, 1948
Creator: Calvin, M. & Benson, A.
Item Type: Refine your search to only Report
open access

Present Status of Polonium Tolerance Estimations

Description: From abstract: "This report contains a summary of biological information on distribution, excretion, and toxicity of polonium; a comparison of results obtained when maximum permissible exposure rates for man are calculated from available data by different methods; and a critical evaluation of the present status of Po tolerance estimates."
Date: October 14, 1948
Creator: Hursh, John B. & Stannard, J. Newell
Item Type: Refine your search to only Report
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