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  • Industrial Chemistry  (282)
  • Aerodynamics  (12)
  • 1950-1954  (294)
  • 1935-1939
  • 1951  (294)
  • 1
    Publication Date: 2019-06-28
    Description: A supersonic inlet with supersonic deceleration of the flow entirely outside of the inlet is considered. A particular arrangement with fixed geometry having a central body with a circular annular intake is analyzed, and it is shown theoretically that this arrangement gives high pressure recovery for a large range of Mach number and mass flow and therefore is practical for use on supersonic airplanes and missiles. For some Mach numbers the drag coefficient for this type of inlet is larger than the drag coefficient for the type of inlet with supersonic compression entirely inside, but the pressure recovery is larger for all flight conditions. The differences in drag can be eliminated for the design Mach number. Experimental results confirm the results of the theoretical analysis and show that pressure recoveries of 95 percent for Mach numbers of 1.33 and 1.52, 92 percent for a Mach number of 1.72, and 86 percent for a Mach number of 2.10 are possible, with the configurations considered. If the mass flow decreases, the total drag coefficient increases gradually and the pressure recovery does not change appreciably. The results of this work were first presented in a classified document issued in 1946.
    Keywords: Aerodynamics
    Type: NACA-TN-2286
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  • 2
    Publication Date: 2019-06-28
    Description: The performance of NACA 65-series compressor blade section in cascade has been investigated systematically in a low-speed cascade tunnel. Porous test-section side walls and for high-pressure-rise conditions, porous flexible end walls were employed to establish conditions closely simulating two-dimensional flow. Blade sections of design lift coefficients from 0 to 2.7 were tested over the usable angle-of-attack range for various combinations of inlet-flow angle. A sufficient number of combinations were tested to permit interpolation and extrapolation of the data to all conditions within the usual range of application. The results of this investigation indicate a continuous variation of blade-section performance as the major cascade parameters, blade camber, inlet angle, and solidity were varied over the test range. Summary curves of the results have been prepared to enable compressor designers to select the proper blade camber and angle of attack when the compressor velocity diagram and desired solidity have been determined.
    Keywords: Aerodynamics
    Type: NACA-TR-1368 , NACA-RM-L51G31
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  • 3
    Publication Date: 2019-06-27
    Description: An investigation has been conducted in the Langley 20-foot free spinning tunnel to study the relative behavior in descent of a number of homogeneous balsa bodies of revolution simulating anti-personnel bombs with a small cylindrical exploding device suspended approximately 10 feet below the bomb. The bodies of revolution included hemispherical, near-hemispherical, and near-paraboloid shapes. The ordinates of one near-paraboloid shape were specified by the Office of the Chief of Ordnance, U. S. Army. The behavior of the various bodies without the cylinder was also investigated. The results of the investigation indicated that several of the bodies descended vertically with their longitudinal axis, suspension line, and small cylinder in a vertical attitude,. However, the body, the ordinates of which had been specified by the Office of the Chief of Ordnance, U. S. Army, oscillated considerably from a vertical attitude while descending and therefore appeared unsuitable for its intended use. The behavior of this body became satisfactory when its center of gravity was moved well forward from its original position. In general, the results indicated that the descent characteristics of the bodies of revolution become more favorable as their shapes approached that of a hemisphere.
    Keywords: Aerodynamics
    Type: NACA-RM-SL51L13
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  • 4
    Publication Date: 2019-08-16
    Description: The subject of this paper is the drag of the nose section of bodies of revolution at zero angle of attack. The magnitude of the nose drag in relation to the total drag is very distinctly a function of the body design and the Mach number. It can range from a very small fraction of the total drag of the order of 10 percent to a very large fraction as high as 80 percent. The natural objective of nose design is to minimize the drag, but this objective is not always the primary one. Sometimes other factors overshadow the desire for minimum drag. The most conspicuous example of this is the proposal of guidance engineers that large-diameter spheres and other very blunt shapes be used at the nose tip. This paper will attempt to discuss both phases of the problem, noses for minimum drag and noses with very blunt tips. The state of the theory will also be reviewed and recent theoretical developments described, since the theory still remains a very valuable tool for assaying the effects of compromises in design and departure from shapes for which experimental data are available.
    Keywords: Aerodynamics
    Type: Aerodynamic Characteristics of Bodies at Supersonic Speeds: A Collection of Three Papers; 1-12; NACA-RM-A51J25|NACA Conference on Aerodynamic Design Problems of Supersonic Guided Missiles; Oct 02, 1951 - Oct 03, 1951; Moffett Field, CA; United States
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  • 5
    Publication Date: 2019-07-11
    Description: A wind-tunnel investigation of a 0.049-scale model of the Boeing XB-52 airplane was made at Mach numbers from 0.30 to 0.925 and at corresponding Reynolds numbers from about 2.3 x 10(exp 6) to 4.3 x 10(exp 6). The results of the investigation indicate satisfactory static longitudinal stability throughout the test Mach-number range and some loss in tail effectiveness beginning at about 0.80 Mach number. A comparison of the results of these tests with those of the same model in the Boeing Airplane Company's wind tunnel showed close agreement of lift- and drag-divergence Mach numbers. Slight differences were observed in tail effectiveness and the position of the stick-fixed neutral point.
    Keywords: Aerodynamics
    Type: NACA-RM-SA51C16
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  • 6
    Publication Date: 2019-07-12
    Description: A supplementary investigation has been conducted in the Langley 20-foot free-spinning tunnel of a 1/30 -scale model of the Grumman XFlOF-1 airplane to determine what effect full-span slats would have on the spin-recovery characteristics of the swept-wing version of the XFlOF-1 airplane, which had previously been indicated as possessing undesirable spin-recovery characteristics without slats. The effects of extended nose-wheel doors and of fairing the air-duct inlets were also determined. The results indicated that, with slats fully extended, satisfactory recovery could be obtained by rudder reversal provided it was accompanied by movement of the trimmer ailerons to full with the spin (only up-going spoiler operative), Extension of the nose-wheel doors or fairing of the air-duct inlets did not improve the recovery characteristics.
    Keywords: Aerodynamics
    Type: NACA-RM-SL51G19
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  • 7
    Publication Date: 2019-08-14
    Description: The damping-in-Toll stability derivatives of a missile configuration and its components were determined both experimentally and theoretically. The tests were conducted at a Mach number of 1.52 and at a Reynolds number, based on the mean aerodynamic chord of the wing, of 0.82 x 10(exp 6). The experimental damping derivative of the wing-body combination was 67 percent of the theoretical value. The difference is believed to have resulted mainly from the fact that the theory is not strictly applicable when the Mach number normal to the leading edge is almost unity, which was the case in the present investigation. For the tail-body combination the damping derivative was 86 percent of the theoretical value. In this case, the difference is believed to have been caused partially by mutual interference between the tail surfaces and partially by the low Reynolds number of the flow over the tail. It was found that the damping of the complete configuration was not equal to the sum of the damping derivatives of the components because of the effect of the wing downwash on the damping of the tail.
    Keywords: Aerodynamics
    Type: NACA-RM-A51A03
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  • 8
    Publication Date: 2019-08-17
    Description: A wing-body combination having a plane triangular wing of aspect ratio 2 with NACA 0005-63 thickness distribution in streamwise planes, and twisted and cambered for a trapezoidal span load distribution has been investigated at both subsonic and supersonic Mach numbers. The lift, drag, and pitching moment of the model are presented for Mach numbers from 0.60 to 0.90 and 1.30 to 1.70 at a Reynolds number of 3.0 million. The variations of the characteristics with Reynolds number are also shown for several Mach numbers.
    Keywords: Aerodynamics
    Type: NACA-RM-A50K27a
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  • 9
    Publication Date: 2019-07-11
    Description: An investigation was made in the Langley 300 MPH 7- by 10-foot tunnel to determine the aerodynamic characteristics of a flying-boat hull of a length-beam ratio of 15 in the presence of a wing. The investigation was an extension of previous tests made on hulls of length-beam ratios of 6, 9, and 12; these hulls were designed to have approximately the same hydrodynamic performance with respect to spray and resistance characteristics. Comparison with the previous investigation at lower length-beam ratios indicated a reduction in minimum drag coefficients of 0.0006 (10 peroent)with fixed transition when the length-beam ratio was extended from 12 to 15. As with the hulls of lower length-beam ratio, the drag reduction with a length-beam ratio of 15 occurred throughout the range of angle of attack tested and the angle of attack for minimum drag was in the range from 2deg to 3deg. Increasing the length-beam ratio from 12 to 15 reduced the hull longitudinal instability by an mount corresponding to an aerodynamic-center shift of about 1/2 percent of the mean aerodynamic chord of the hypothetical flying boat. At an angle of attack of 2deg, the value of the variation of yawing-moment coefficient with angle of yaw for a length-beam ratio of 15 was 0.00144, which was 0.00007 larger than the value for a length-beam ratio of 12.
    Keywords: Aerodynamics
    Type: NACA-RM-L6J24
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  • 10
    Publication Date: 2019-07-11
    Description: A flight investigation was made at high subsonic, transonic, and supersonic speeds and at high Reynolds numbers to determine the zero-lift drag of a 1/10-scale model of the Northrop MX-775A missile and a scale model of the missile fuselage. The model of the complete configuration has a 45deg swept wing of aspect ratio 5.5 and a 33deg swept vertical fin. The body model was stabilized by three 45deg swept fins. The-drag-rise Mach number for the model of the complete configuration was approximately 0.96. The drag coefficient based on total wing area was 0.0330 at Mach number 1.39. The drag coefficient of the body model less fin drag was approximately 55 percent that of the complete model at the same Mach number. Addition of the wing to the fuselage apparently resulted in a favorable drag interference near Mach number 1.0.
    Keywords: Aerodynamics
    Type: NACA-RM-SL51K07
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  • 11
    Publication Date: 2019-08-15
    Description: At present there is no satisfactory theory for calculating the pressure which acts at the blunt base of an object traveling at supersonic velocity. In fact, the essential mechanism determining the base pressure is only imperfectly understood. As a result, the existing knowledge of base pressure is based almost entirely on experiments. The main object of this paper is to summarize the principal results of the many wind tunnel and free flight measurements of base pressure on both bodies of revolution and blunt trailing edge airfoils. A relatively simple method of estimating base pressure is presented, and an indication is given as to how the characteristics of base pressure play an essential role in determining the shape of an aerodynamically efficient object for supersonic flight.
    Keywords: Aerodynamics
    Type: Aerodynamic Characteristics of Bodies at Supersonic Speeds: A Collection of Three Papers; 13-30; NACA-RM-A51J25|NACA Conference on Aerodynamic Design Problems of Supersonic Guided Missiles; Oct 02, 1951 - Oct 03, 1951; Moffett Field, CA; United States
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  • 12
    Publication Date: 2019-08-15
    Description: The three papers collected here are: 'The Effect of Nose Shape on the Drag of Bodies of Revolution at Zero Angle of Attack.', 'Base Pressure on Wings and Bodies with Turbulent Boundary Layers', and 'Flow over Inclined Bodies'. The subject of the first paper is the drag of the nose section of bodies of revolution at zero angle of attack. The main object of the second paper is to summarize the prinicpal results of the many wind tunnel and free flight measurements of base pressure on both bodies of revolution and blunt trailing edge airfoils.
    Keywords: Aerodynamics
    Type: NACA-RM-A51J25
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  • 13
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    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 23 (1951), S. 24-25 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 14
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 57-58 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die Verwendung von Spezialgraphit hat bei Absorbern und Verbrennungsöfen für die Chlorwasserstoff-Synthese zu wesentlich leistungsfähigeren und raumsparenden Konstruktionen geführt, über die nachfolgend berichtet wird.
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  • 15
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 68-68 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 16
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 65-68 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Nachdem im ersten Teil dieser ArbeitI. Teil diese Ztschr. 23, 33 [1951]. die Durchstrahlungs-Verfahren und die magnetischen Verfahren der zerstörungsfreien Werkstückprüfung besprochen wurden, werden nachfolgend die elektrischen, akustischen, thermischen und chemischen Verfahren behandelt.
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  • 17
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 68-72 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 18
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 73-75 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 19
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 92-95 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 20
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 95-98 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 21
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 98-98 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 22
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 99-100 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 23
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    Chemie Ingenieur Technik - CIT 23 (1951) 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 24
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 106-106 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 25
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 112-113 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Im Laufe von Untersuchungen über die Phasengleichgewichte in ternären und polynären Systemen war es notwendig, die Löslichkeit von Kohlenwasserstoffen in Methyl- und Benzylalkohol zu untersuchen. Außer Gesichtspunkten allgemeiner Natur spielte bei dieser Arbeit auch die Erwägung eine Rolle, gegebenenfalls neue analytische und präparative Möglichkeiten zu gewinnen.
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  • 26
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: An zahlreichen Beispielen wird gezeigt, daß die Normung in der Verfahrenstechnik und im Apparatebau sich nicht allein auf Größe und Form von Flanschen, Rohren, Nieten und anderen Maschinenelementen beschränken darf, sondern daß sie zweckmäßigerweise auch ganze Apparaturen umfassen sollte.
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  • 27
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 116-117 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 28
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 120-120 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 29
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 120-120 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 30
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Bei dem in der vorliegenden Arbeit erstmalig gelösten Festigkeitsproblem handelt es sich um Fragen, die bei der Berechnung solcher Hochdruckrohre von Bedeutung sind, die im Gegensatz zu den bisher verwendeten geschmiedeten Massivrohren aus einem dünnwandigen Kernrohr bestehen, auf das  -  je nach der Höhe des Innendrucks  -  eine mehr oder weniger große Zahl von Bändern aufgewickelt wird. Außerdem spielt das Problem auch bei anders gearteten Aufgaben eine Rolle, auf die kurz hingewiesen wird.
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  • 31
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 168-168 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
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  • 32
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 166-168 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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  • 33
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 169-170 
    ISSN: 0009-286X
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  • 34
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 172-176 
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    Chemie Ingenieur Technik - CIT 23 (1951) 
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 194-194 
    ISSN: 0009-286X
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  • 37
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: Die Kunstfaser-Herstellung beruhte bis zur Mitte der 20iger Jahre dieses Jahrhunderts auf reiner Empirie. Wissenschaftliche Forschungsarbeit von Chemikern und Ingenieuren haben dann aber die Technik der Kunstfaser-Erzeugung teilweise grundlegend geändert. Moderne Kunstfaser-Erzeugungsanlagen kombinieren die ursprünglich zahlreichen einzelnen Arbeitsprozesse zu einem kontinuierlichen Betrieb. Die verfahrenstechnischen wirtschaftlichen Auswirkungen dieser Entwicklung werden dargestellt.
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 278-278 
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  • 39
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 279-280 
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  • 40
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 280-281 
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  • 41
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 283-288 
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  • 42
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die nachfolgend abgeleiteten Formeln für den Druckverlust sind von größter Allgemeingültigkeit und lassen sich nicht nur auf alle möglichen Füllkörperformen und -größen, sondern auch auf die verschiedensten Füllkörper- und Schüttgutgemenge übertragen. Die meisten der in der Praxis auftretenden Fälle lassen sich in zwei große Gruppen, und zwar in Säulen mit abgerundeten und mit scharfkantigen Füllkörpern einordnen, für die sich annähernd die gleichen Widerstandsbeiwerte ergeben. Eine Berechnung der Druckverluste ist auch im Falle der Berieselung mit ausreichender Genauigkeit möglich.
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 296-298 
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    Notes: Es werden drei Verfahren zur Entsalzung von Meerwasser beschrieben. Das Ausfrieren in Blockzellen mit und ohne Luftbewegung befriedigt nicht. Das Ringzellenverfahren mit temperiertem Schleudern und Abdecken sowie das Rührgefrierverfahren mit Schleudern und Abdecken ergeben befriedigende Salzkonzentrationen von 0,14%, was für Trinkwasserzwecke geeignet ist.
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    Notes: Die im folgenden erörterten Fragen sind nicht nur deswegen Grenzprobleme, weil es sich bei ihnen um Transportvorgänge durch Phasengrenzen handelt. Vielmehr bildet dieses Gebiet auch eine Berührungsgrenze zwischen den Ingenieurwissenschaften und der physikalischen Chemie. Von erstgenannter Seite wurde der betreffende Fragenkreis in letzter Zeit mehrfach zusammenfassend dargestellt1. Hier möge er mehr vom Standpunkt der physikalischen Chemie aus und unter Bevorzugung der bisher noch nicht befriedigend gelösten Probleme behandelt werden. Gerade dieses Gebiet ist besonders geeignet, die Fruchtbarkeit einer Zusammenarbeit beider Wissenschaften im Rahmen der Verfahrenstechnik aufzuzeigen.
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    Notes: In der Praxis treten bei der Regelung von Destillations-Kolonnen immer wieder Schwierigkeiten auf, die nur durch eine enge Zusammenarbeit zwischen Betriebsingenieur und Regelungstechniker beseitigt werden können. In der vorliegenden Arbeit wird deshalb versucht, die Denk- und Arbeitsweise des Regelungstechnikers dem Verfahrensingenieur nahe zu bringen.
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    Notes: Bei der Luftzerlegung im Zweisäulenapparat ist die Bodenwirkung in der Drucksäule besser als in der oberen Säule, wo sie mit zunehmendem Sauerstoff-Gehalt abnimmt. Nach Kirschbaum ist die Abhängigkeit der Bodenwirkung von der Gemischkonzentration aus dem Wärmeumsatz bei der Rektifikation und aus der zwischen Dampf und Flüssigkeit bestehenden Temperaturdifferenz zu erklären. Für die Anwendung auf die Luftzerlegung wird die Theorie von Kirschbaum einerseits für den Fall kleiner Gleichgewichtsstörung vereinfacht, andererseits auf die Rektifikation von Dreistoffgemischen ausgedehnt. Der errechnete Verlauf der Bodenwirkung stimmt mit der Erfahrung gut überein.
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    Notes: Die Struktur der pflanzlichen und tierischen Ausgangsstoffe ist bestimmend für die Zerkleinerungsverfahren. An einigen Beispielen werden die Wirkungen besprochen, die der Zerkleinerungsvorgang auf die Zerkleinerungsstoffe ausübt. Nur eine eingehende Kenntnis dieser Zusammenhänge kann das Auffinden der besten Verfahren, von denen wir heute offenbar noch weit entfernt sind, ermöglichen.
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    Notes: Im I. Teil dieser ArbeitDiese Ztschr. 22, 389/95 [1950]. wurde eine Entwicklung des graphostatischen Verfahrens gegeben, wobei der Unterschied zwischen den molaren Verdampfungswärmen der beiden Einzelstoffe vernachlässigt wurde. Nachfolgend wird das Verfahren auf den Fall erweitert, daß dieser Unterschied in Rechnung gestellt werden muß.
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    Notes: Es wird ein Aräometer beschrieben, welches gestattet, eine definierte Dichte, etwa d 20/4, bei beliebigen Temperaturen zu messen. Die Steigerung der Empfindlichkeit des Gerätes in Verbindung mit einer Temperaturkompensation ermöglichte eine Genauigkeitssteigerung der aräometrischen Messung, so daß die Pyknometermessung übertroffen wird.
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    Notes: An Hand einer größeren Anzahl von Einzeluntersuchungen der Carbid-Ausbeute wird der Streubereich und der häufigste Wert der Ausbeute für zwei verschiedene Körnungen angegeben. Vergleichsversuche der Carbid-Prüfung nach Caro und nach einem neu entwickelten Mikroprüfungsverfahren zeigen, daß die Ergebnisse der Mikroprüfung mit dem häufigsten Wert der Ausbeute nach Caro übereinstimmten. Das wesentlich einfachere Verfahren der Mikroprüfung ist also für die Abnahme im praktischen Betrieb geeignet.
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    Notes: In neuerer Zeit sind mit Dampfstrahlern betriebene Vakuumkühlanlagen vielfach an die Stellen von Kompressionskältemaschinen getreten. Der Einfachheit im Bau und Betrieb solcher Anlagen steht der schlechte Wirkungsgrad der Dampfstrahlgebläse gegenüber. Erkenntnisse aus theoretischen und praktischen Untersuchungen an Strahlern(1)(2)(3)(4) haben zu wesentlichen Leistungssteigerungen geführt. Darüber hinaus wurden durch weitere systematische Versuche der Duisburger Kupferhütte, die am 1. November 1951 auf ein 75jähriges Bestehen zurückblickte, Verbesserungen erzielt, die einen wirtschaftlichen Einsatz von Vakuumanlagen für tiefere Endtemperaturen gestatten.
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    Notes: Bei Vollschmierung ist die Temperaturabhängigkeit der Viscosität von großer Bedeutung, für deren Charakterisierung besondere Kennziffer-Systeme entwickelt wurden. Die gebräuchlichen Systeme versagen jedoch bei sehr niedrigviscosen Flüssigkeiten, bei Ölen mit sehr flacher oder sehr steiler Viscositäts-Temperatur-Kurve und bei Ölen mit hoher Dichte. In diesen Fällen sind die Normalöl-Relation bzw. die Normalöl-Proportion besser geeignet.
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    Notes: Auf Grund der Margulesschen Interpolationsformeln zur Berechnung der Dampfdrucke von Zweistoffgemischen bei konstanter Temperatur wird gezeigt, daß sich ganz allgemein der Trennfaktor als eine Exponentialfunktion mathematisch darstellen läßt. Ihr Exponent ist eine Funktion von Koeffizienten, deren Größe wichtige Schlüsse auf das allgemeine physikalisch-chemische Verhalten von Zweistoffgemischen zu ziehen gestattet. Die mathematische Darstellung läßt sich auch auf die üblichen Gleichgewichtskurven bei konstantem Druck anwenden. Mehrere praktische Beispiele bekannter Kurven werden mathematisch dargestellt.
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    Notes: Für die Synthese am Eisenkatalysator sind die Art der Inbetriebnahme und die Betriebsbedingungen von ausschlaggebender Bedeutung. Es werden die Probleme der Formierung und der von den Betriebsbedingungen abhängigen Arbeitsweise des Katalysators dargelegt. Für drei der entwickelten Syntheseverfahren werden in zahlenmäßig belegten Beispielen die Ergebnisse und die Betriebsbedingungen mitgeteilt.
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    Chemie Ingenieur Technik - CIT 23 (1951) 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 276-278 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Tab.
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 278-278 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 278-278 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 282-282 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 281-281 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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    Chemie Ingenieur Technik - CIT 23 (1951) 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 294-295 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Mittels der Diasolyse lassen sich die Arbeitsverfahren zur Gewinnung von Wirkstoffen aus Pflanzen oder tierischen Produkten bedeutend vereinfachen. Zur Diasolyse im Laboratoriumsmaßstab eignet sich besonders der Diasolyseaufsatz, während die Diasolyseapparatur auch in halbtechnischen und technischen Ausmaßen erstellt werden kann. Zur Vorbehandlung der Ausgangsmaterialien läßt sich der Extraktionsapparat verwenden.
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 300-303 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 8 Ill.
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    Chemie Ingenieur Technik - CIT 23 (1951), S. 305-305 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
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