Entwicklung eines Mikrogasanalysators - MiGa. Teilprojekt: Entwicklung der Sensorik fuer den Mikro-Gasanalysator Abschlussbericht

In the joint development project of the companies Heinz Walz and Fisher Rosemount a low cost micro gas analyser for the quantitative high precision measurement of CO_2 and H_2O should be developed and a prototype should be manufactured. Within the scope of this project the main tasks were fulfilled: modular set up, a decisive miniaturisation with the potential for further steps of space reduction, lower system and operation cost, higher measuring accuracy and others. Almost all components developed by Fisher-Rosemount (measurement cells, detector, one PCB set up with DSP, new chopper wheel and new chopper regulator, infrared source with optimised reflector and optimised welding and others) can be introduced in the production and thus yield an enhancement in the current instrument family and as a basis for an expanded portfolio. A modified type of the micro analysis cell (patented) can be included in process analysers also. The manufacturing processes evaluated in this project are already used for different analysers. (orig.)SIGLEAvailable from TIB Hannover: F03B760+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung und Forschung, Berlin (Germany)DEGerman

Breaking barriers Poverty, childcare and mothers' transitions to work

Includes bibliographical references. Title from coverAvailable from British Library Document Supply Centre- DSC:m03/26574 / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo

Wind tunnel investigation of a spike-bluff body combination for a monorail rocket sled M = 2.0 to M = 5.0 /

Results of wind tunnel measurements of lift, drag and pitching moment on a circular crosssection monorail sled using a flow separation spike including the influence of ground interference are presented and discussed. Variables investigated were the spike length, spike diameter and location on a series of sled nose shapes. Mach number range was from 2 to 5. The sled configuration having the largest drag (spike retracted) and the lowest drag (spike extended) was that with a flat face sled nose and with the spike mounted on the sled axis. The spike length for minimum drag, in general, became longer at higher speeds. Sled lift was essentially unaffected by variation of the spike length. Diameter of the spike had little effect on the overall lift or drag. Unsteady flow phenomena (buzzing) were observed for some sled configurations at spike lengths on the order of 1 to 1.5 body diameters, but not at spike lengths for minimum drag. When buzzing occurred it could be reduced or eliminated by rounding the sled nose shoulder. Mounting the spike below the sled axis diminished the drag reduction characteristics of the spike, increased the incidence of buzzing, but decreased the sled lift.Rosemount Aeronautical Laboratories report number RAL-RR-186.AD0290609. (from http://www.dtic.mil)."September 1962."Includes bibliographical references (page 10).Results of wind tunnel measurements of lift, drag and pitching moment on a circular crosssection monorail sled using a flow separation spike including the influence of ground interference are presented and discussed. Variables investigated were the spike length, spike diameter and location on a series of sled nose shapes. Mach number range was from 2 to 5. The sled configuration having the largest drag (spike retracted) and the lowest drag (spike extended) was that with a flat face sled nose and with the spike mounted on the sled axis. The spike length for minimum drag, in general, became longer at higher speeds. Sled lift was essentially unaffected by variation of the spike length. Diameter of the spike had little effect on the overall lift or drag. Unsteady flow phenomena (buzzing) were observed for some sled configurations at spike lengths on the order of 1 to 1.5 body diameters, but not at spike lengths for minimum drag. When buzzing occurred it could be reduced or eliminated by rounding the sled nose shoulder. Mounting the spike below the sled axis diminished the drag reduction characteristics of the spike, increased the incidence of buzzing, but decreased the sled lift.Print reproduction.Air Force Contract No.Mode of access: Internet

The high temperature heater and evaporative film cooling of nozzle throat sections of the Rosemount Aeronautical Laboratories' hypersonic facility /

"Review Copy.""ASTIA Document No. 204663.""July 1958."Includes bibliographical references (pages 24-25).Work was carried out by the Rosemount Aeronautical Laboratories, University of Minnesota Institute of Technology, under Wright Air Development Center Contract No.Mode of access: Internet