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  • Aircraft Stability and Control
  • GENERAL
  • Inorganic Chemistry
  • 1995-1999  (4)
  • 1955-1959  (11)
  • 1999  (4)
  • 1959  (11)
Collection
Keywords
Publisher
Years
  • 1995-1999  (4)
  • 1955-1959  (11)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Über Benzal-Derivate des L-Idits (1959)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 92 (1959), S. 2694-2700 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die von E. Fischer und G. Bertrand beschriebenen Tribenzal-L-idite erwiesen sich als identisch mit 1.3;2.4;5.6-Tribenzal-L-idit. Unter wenig abgeänderten Versuchsbedingungen entsteht neben dem Tribenzal-L-idit ein Dibenzal-Derivat, welches einen 2.3.4.5-, wahrscheinlich 2.4;3.5-Dibenzal-L-idit darstellt. Es wird auf den unterschiedlichen Verlauf der Acetalisierung des L-Idits mit Benzaldehyd, bzw. Formaldehyd hingewiesen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19590921103
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  • 2
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    Determination of Stability and Control Derivatives using Computational Fluid Dynamics and Automatic Differentiation (1999)
    In:  CASI
    Details
    Publication Date: 2019-07-10
    Description: With the recent interest in novel control effectors there is a need to determine the stability and control derivatives of new aircraft configurations early in the design process. These derivatives are central to most control law design methods and would allow the determination of closed-loop control performance of the vehicle. Early determination of the static and dynamic behavior of an aircraft may permit significant improvement in configuration weight, cost, stealth, and performance through multidisciplinary design. The classical method of determining static stability and control derivatives - constructing and testing wind tunnel models - is expensive and requires a long lead time for the resultant data. Wind tunnel tests are also limited to the preselected control effectors of the model. To overcome these shortcomings, computational fluid dynamics (CFD) solvers are augmented via automatic differentiation, to directly calculate the stability and control derivatives. The CFD forces and moments are differentiated with respect to angle of attack, angle of sideslip, and aircraft shape parameters to form these derivatives. A subset of static stability and control derivatives of a tailless aircraft concept have been computed by two differentiated inviscid CFD codes and verified for accuracy with central finite-difference approximations and favorable comparisons to a simulation database.
    Keywords: Aircraft Stability and Control
    Type: AIAA Paper 99-3136
    Format: application/pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Über Tris-trimethylendiamin-Komplexe des dreiwertigen Chroms (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 302 (1959), S. 1-9 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A method of preparing [Cr tn3]Cl3 (tn = NH2 · CH2 · CH2 · CH2 · NH2) by direct interaction between CrCl3 and trimethylene diamine is described. From the new compound, complex salts of the type [Cr tn3]X3 with X = Br-, J-, ClO-4, and NO-3 have been obtained.The absorption spectrum of [Cr tn3]+ is given. Attempts to isolate optical antipodes are described.
    Notes: Es wird eine Methode zur Darstellung von [Cr tn3]Cl3(tn = NH2 · CH2 · CH2 ·CH2 · NH2) in direkter Reaktion aus CrCl3 und Trimethylendiamin angegeben. Aus dem Chlorid erhält man durch Umfällen mit entsprechenden Säuren und Alkalisalzen [Cr tn3]X3 mit X = Br-, J-, ClO-4 und NO-3. Das Absorptionsspektrum von [Cr tn3]3+ wird mitgeteilt. Versuche zur Trennung in die optischen Antipoden werden beschrieben.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19593020102
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  • 4
    Electronic Resource
    Electronic Resource
    Über die Bildung salzartiger Verbindungen bei der Umsetzung von Antimon(V)-chlorid mit Äthylat (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 302 (1959), S. 88-102 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On reaction of SbCl5 with NaOC2H5 salt-like compounds with cation co-ordination number 4 and anion co-ordination number 6 are formed: [SbCla(OC2H5)4-a] [SbClb(OC2H5)6-b]. In polar solvents these substances show electrolytical conductivity and their molecular weights in dilute solution prove complete dissociation into two particles. In nonpolar solvents the compounds are also dissolved but now in a molecular form SbClc(OC2H5)5-c. The latter solutions have no electrolytical conductivity. IR-spectra of the compounds in polar and nonpolar solutions are different from each other.
    Notes: Bei der Umsetzung von SbCl5 mit NaOC2H5 entstehen heteropolare Verbindungen mit 4fach koordiniertem Kation und 6fach koordiniertem Anion: [SbCla(OC2H5)4-a] [SbClb(OC2H5)6-b]. In polaren Lösungsmitteln zeigen diese Substanzen elektrolytische Leitfähigkeit und Molekulargewichte, die in verdünnter Lösung auf vollständige Dissoziation schließen lassen. In unpolaren Lösungsmitteln sind die Verbindungen in homöopolarer Form SbClc(OC2H5)5-c gelöst. Diese Lösungen zeigen nur sehr geringe Leitfähigkeit. Die Infrarotspektren der Verbindungen in polaren und unpolaren Lösungen unterscheiden sich stark voneinander.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19593020109
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  • 5
    Electronic Resource
    Electronic Resource
    Complex Compounds of n-Hexyl Biguanide with metallic Elements (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 302 (1959), S. 237-240 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Es werden Chelatkomplexe des n-Hexylbiguanids mit Kupfer(II), Nickel(II), Kobalt(III) und Chrom(III) beschrieben. Es konnte ferner Dipyridino-dibiguanidino-kobalt(III)-hydroxyd dargestellt werden.
    Notes: A study of n-hexyl biguanide as a chelating ligand has been made, and its complex compounds with copper(II), nickel(II), cobalt(III) and chromium(III) have been described. A cobaltic complex containing pyridine along with the biguanide, dipyridinocobaltic bis-n-hexyl biguanidinium hydroxide, has also been isolated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19593020312
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  • 6
    Electronic Resource
    Electronic Resource
    Über die Hydrolyse des Antimon(V)-säureäthylesters (1959)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 301 (1959), S. 339-342 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Sb(OC2H5)5 is hydrolized on action with ½ mol of water yielding the dimeric ester (C2H5O)4Sb—O—Sb(OC2H5)4. By larger quantities of water polymeric chains and net works are formed.
    Notes: Durch Hydrolyse von Sb(OC2H5)5 mit einem halben Mol Wasser entsteht die kondensierte Verbindung (C2H5O)4SbOSb(OC2H5)4. Größere Mengen an Wasser führen zu ketten förmigen und vernetzten Produkten.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19593010518
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  • 7
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    High Reynolds Number Effects on HSCT Stability and Control Characteristics (1999)
    In:  CASI
    Details
    Publication Date: 2004-12-03
    Description: Two wind tunnel tests during 1995 in the National Transonic Facility (NTF 070 and 073) served to define Reynolds number effects on longitudinal and lateral-directional stability and control. Testing was completed at both high lift and transonic conditions. The effect of Reynolds number on the total airplane configuration, horizontal and vertical tail effectiveness, forebody chine performance, rudder control and model aeroelastics was investigated. This paper will present pertinent stability and control results from these two test entries. Note that while model aeroelastic effects are examined in this presentation, no corrections for these effects have been made to the data.
    Keywords: Aircraft Stability and Control
    Type: First NASA/Industry High-Speed Research Configuration Aerodynamics Workshop; Part 3; 1253-1284; NASA/CP-1999-209690/PT3
    Format: text
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  • 8
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    Critical Stability and Control Issues in High-Speed Aerodynamics for the HSCT (1999)
    In:  CASI
    Details
    Publication Date: 2004-12-03
    Description: The stability and control issues in high speed aerodynamics of most significance for the development of a viable HSCT are identified, and the status of the Ref. H configuration with respect to these issues is discussed. The interdependence between aerodynamic requirements and assumptions about airplane system functions such as Envelope Protection and Integrated Flight/Propulsion Control is highlighted. The conclusions presented draw on results from the Ref. H Assessment and Alternate Control Concepts Assessment performed under Configuration Aerodynamics Subtask 5 during 1995.
    Keywords: Aircraft Stability and Control
    Type: First NASA/Industry High-Speed Research Configuration Aerodynamics Workshop; Part 3; 1215-1231; NASA/CP-1999-209690/PT3
    Format: text
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  • 9
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    Effects of Fuselage Nose Length and a Canopy on the Low-Speed Oscillatory Yawing Derivatives of a Swept-Wing Airplane Model with a Fuselage of Circular Cross Section (1959)
    In:  CASI
    Details
    Publication Date: 2019-08-16
    Description: A wind-tunnel investigation was made at low speed in the Langley stability tunnel in order to determine the effects of fuselage nose length and a canopy on the oscillatory yawing derivatives of a complete swept-wing model configuration. The changes in nose length caused the fuselage fineness ratio to vary from 6.67 to 9.18. Data were obtained at various frequencies and amplitudes for angles of attack from 0 deg. to about 32 deg. Static lateral and longitudinal stability data are also presented.
    Keywords: Aircraft Stability and Control
    Type: NASA-MEMO-1-15-59L
    Format: application/pdf
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  • 10
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    Static Longitudinal Stability and Control Characteristics of an Unswept Wing and Unswept Horizontal-Tail Configuration at Mach Numbers from 0.70 to 2.22 (1959)
    In:  CASI
    Details
    Publication Date: 2019-08-16
    Description: Results of an investigation of the static longitudinal stability and control characteristics of an aspect-ratio-3.1, unswept wing configuration equipped with an aspect-ratio-4, unswept horizontal tail are presented without analysis for the Mach number range from 0.70 to 2.22. The hinge line of the all-movable horizontal tail was in the extended wing chord plane, 1.66 wing mean aerodynamic chords behind the reference center of moments. The ratio of the area of the exposed horizontal-tail panels to the total area of the wing was 13.3 percent and the ratio of the total areas was 19.9 percent. Data are presented at angles of attack ranging"from -6 deg to +18 deg for the horizontal tail set at angles ranging from +5 deg to -20 deg and for the tail removed.
    Keywords: Aircraft Stability and Control
    Type: NASA-MEMO-6-11-59A
    Format: application/pdf
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