An automatic gore panel mapping system

The Automatic Gore Mapping System is being developed to reduce the time and labor costs associated with manufacturing the External Tank. The present chem-milling processes and procedures are discussed. The down loading of the simulation of the system has to be performed to verify that the simulation package will translate the simulation code into robot code. Also a simulation of this system has to be programmed for a gantry robot instead of the articulating robot that is presently in the system. It was discovered using the simulation package that the articulation robot cannot reach all the point on some of the panels, therefore when the system is ready for production, a gantry robot will be used. Also a hydrosensor system is being developed to replace the point-to-point contact probe. The hydrosensor will allow the robot to perform a non-contact continuous scan of the panel. It will also provide a faster scan of the panel because it will eliminate the in-and-out movement required for the present end effector. The system software is currently being modified so that the hydrosensor will work with the system. The hydrosensor consists of a Krautkramer-Branson transducer encased in a plexiglass nozzle. The water stream pumped through the nozzle is the couplant for the probe. Also, software is being written so that the robot will have the ability to draw the contour lines on the panel displaying the out-of-tolerance regions. Presently the contour lines can only be displayed on the computer screens. Research is also being performed on improving and automating the method of scribing the panels. Presently the panels are manually scribed with a sharp knife. The use of a low power laser or water jet is being studied as a method of scribing the panels. The contour drawing pen will be replaced with scribing tool and the robot will then move along the contour lines. With these developments the Automatic Gore Mapping Systems will provide a reduction in time and labor costs associated with manufacturing the External Task. The system also has the potential of inspecting other manufactured parts

Complex permeability of soft magnetic ferrite polyester resin composites at frequencies above 1 MHz

Composite soft magnetic materials consist of magnetic particles in a non-magnetic matrix. The properties of such materials can be modelled using effective medium theory. Measurements have been made of the complex permeability of composites produced using ferrite powder and polyester resin. The success of various effective medium expressions in predicting the variation of complex permeability with composition has been assessed

Description of the US Army small-scale 2-meter rotor test system

A small-scale powered rotor model was designed for use as a research tool in the exploratory testing of rotors and helicopter models. The model, which consists of a 29 hp rotor drive system, a four-blade fully articulated rotor, and a fuselage, was designed to be simple to operate and maintain in wind tunnels of moderate size and complexity. Two six-component strain-gauge balances are used to provide independent measurement of the rotor and fuselage aerodynamic loads. Commercially available standardized hardware and equipment were used to the maximum extent possible, and specialized parts were designed so that they could be fabricated by normal methods without using highly specialized tooling. The model was used in a hover test of three rotors having different planforms and in a forward flight investigation of a 21-percent-scale model of a U.S. Army scout helicopter equipped with a mast-mounted sight

MORTGAGES - DEED IN LIEU OF FORECLOSURE - VALIDITY

Depression years have brought to the fore a question much controverted in the early law, but now said to have become settled. That question regards the effect and efficacy of a conveyance of the mortgaged land, or a transfer of the equity of redemption, by the mortgagor to his mortgagee. It seems to have been cheerfully assumed by some lawyers, and by laymen in general, that in the absence of liens subsequent to the mortgage, the procedure is perfectly safe and proper in every case. It is the purpose of this discussion, however, to point out certain dangers inherent in the practice and to suggest possible safeguards. Certainly there is little room for its use if the title taken will be unduly subject to attack or defeat, or its marketability lessened to an appreciable extent. To the writer the problem seems of large importance at the present time, yet there appears to be no specific treatment of it in legal literature

CONSTITUTIONAL LAW-PROHIBITION OF ADVERTISEMENT OF PRICES BY BARBERS - IMPROPER POLICE REGULATION - DENIAL OF FREEDOM OF SPEECH

Defendant was convicted of violating an ordinance of the City of Long Beach. That ordinance related exclusively to the barber trade and made it a misdemeanor, punishable by fine or imprisonment or both, to advertise prices of services in any publication, handbill, or notice whatsoever, provided, however, that prices might be displayed within a barber shop in such manner as not to be visible from the outside, and provided further that no advertising of prices should be allowed on the windows or on the outside of the shop, or on the adjacent sidewalk or street. Held, the ordinance was unconstitutional as a denial of equal privileges and immunities and equal protection of the law, and an impairment of right of property, of contract, and of freedom of speech and press. People v. Osborne, (Cal. App. 1936) 59 P. (2d) 1083

Imidacloprid Impairs Performance on a Model Flower Handling Task in Bumblebees (Bombus impatiens)

Bumblebees exposed to neonicotinoid pesticides collect less pollen on foraging trips. Exposed bumblebees are also slower to learn to handle flowers, which may account for reduced pollen collection. It is unclear, however, why neonicotinoid exposure slows learning to handle flowers. I investigated the effect of imidacloprid, a neonicotinoid pesticide, on bumblebee motor learning using a lab model of flower handling. Bumblebees learned to invert inside a narrow tube and lift a petal-shaped barrier to reach a reward chamber. Imidacloprid-exposed bumblebees showed a dose-dependent delay to solve the task, which resulted from reduced switching between behavioural strategies and a subsequent delay in use of the successful strategy. This effect was consistent in colonies exposed at 10 but not 2.6 ppb, suggesting a variable effect on individuals at lower doses. These results help to explain why exposed bumblebees are slow to learn to handle flowers and collect less pollen on foraging trips

DUGGAN, STEPHEN. The Two Americas. Pp. xx, 277. New York: Charles Scribner's Sons, 1934. $1.75

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/66691/2/10.1177_000271623417600174.pd

The M-Series Absorption Spectrum of Metallic Bismuth

Using a Siegbahn vacuum spectrometer and thin films of bismuth produced by sputtering, the wavelengths of the five x-ray M-absorption edges of bismuth 83 have been measured. For the edges M1 and M2, which had not previously been measured, the discrepancy between the computed and observed values is of the order of magnitude of experimental error while the usual large M4 and M5 discrepancies, first observed in this laboratory on other elements, are verified for bismuth. An interpretation of the large discrepancies between the experimental and computed wavelengths of the edges M4 and M5 based on experiments in other fields on the one hand and Block\u27s and Kronig\u27s wave-mechanical theory of energy levels in a crystal on the other is suggested. It is concluded that the M1 , M2 , and M3 electron in an absorption act go to the top of the filled free-electron levels while the M4 and M5 electrons go on out to higher energy levels of the crystal lattice

THE WIDOW\u27S RIGHT OF ELECTION IN THE ESTATE OF HER HUSBAND

Reference has already been made to the difficulties arising when the widow has elected to take under the will, and for some reason or other, intestate property also remains to be disposed. Further difficulty arises in those cases where the widow elects to take against the will and yet claims to share in intestate property. Shall her claim be allowed under those circumstances

TAXATION-VALIDITY OF TAX ON INCOME OF SUPERINTENDENT OF SCHOOL CAFETERIA SYSTEM -SOVEREIGN IMMUNITY

Petitioners, husband and wife, residents of Texas, made returns of community income for the year 1932, listing as exempt the salary of the wife who was superintendent of a non-profit cafeteria system operated by the Ft. Worth public schools for the exclusive patronage and benefit of teachers and students. The Commissioner of Internal Revenue refused the exemption and levied a deficiency tax of $105. On appeal from an affirmance of the commissioner\u27s decision by the Board of Tax Appeals, held, reversed on the ground that the operation of the cafeteria system was a proper exercise of a governmental function by the school district, and that the salary of the superintendent, as an employee of a political subdivision and engaged in the performance of a governmental function, was immune from federal income taxation. Hoskins v. Commissioner of Internal Revenue, (C. C. A. 5th, 1936) 84 F. (2d) 627