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  • Temperatur  (4)
  • Aerodynamics; Aircraft Design, Testing and Performance  (2)
  • 1950-1954
  • 1940-1944  (6)
  • 1943  (6)
  • 1
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    Bioclimatic study of the European spruce sawfly in Quebec [Gilpinia hercyniae] (1943)
    In:  Rev. canad. Biol. 2: 149-167
    Details
    Publication Date: 1943
    Description: Studien über die Schlupftermine der Europäischen Fichtenbuschhornblattwespe, Übertragbarkeit von Entwicklungstadien bei gleicher klimatischen Bedingungen KATASTER-BESCHREIBUNG: Durch Einteilung in klimatische Zonen konnte die Unterschiede in Tagen des Ausschlüpfen aus den Eiern der Fichtenbuschhornblattwespe für Kanada und die USA dargestellt werden. KATASTER-DETAIL:
    Keywords: Kanada und USA ; 1940-42 ; Insekten ; Fichte ; Pflanzenschädling ; Temperatur
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    BIBLIOGRAPHY INKA BB
  • 2
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    Einflüsse abiotischer Umweltsfaktoren auf den Schwammspinner (Lymantria dispar L.) im Eistadium während der Winterdiapause. 1. Wirkung des Eises (1943)
    In:  Ztschr. ges. Forstwes. 75 (69): 105-132
    Details
    Publication Date: 1943
    Description: Untersuchungen über die Wirkung von Schnee, Eis und Kälte auf die Eigelege des Schwammspinners KATASTER-BESCHREIBUNG: Niedrige Temperaturen (Januar-März) von bis zu -11.4°C hatte keine nachhaltige Auswirkungen auf die Vitalität der Eigelege, eher waren mechanische Beschädigungen z.B. durch Abkratzen der Eigelege Ursachen für das Nichtschlüpfen der Tiere KATASTER-DETAIL:
    Keywords: Kroatien, Europa ; 1938-40 ; Insekten ; Eiche ; Pflanzenschädling ; Temperatur ; Frost
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    BIBLIOGRAPHY INKA BB
  • 3
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    Witterung und Obstertrag (1943)
    In:  Gartenbauwissenschaft Bd. 17, S.603-615
    Details
    Publication Date: 1943
    Description: Einfluss der Temperatur und des Niederschlages auf den Ernteertrag von Birnen und Äpfeln KATASTER-BESCHREIBUNG: Durch Berechnung von Kennziffern zu Wirkung des Sommerregens auf den Obstertrag wird die Bedeutung der Niederschläge in bestimmten Monaten des Vor- und des Erntejahres bestimmt KATASTER-DETAIL: Nied+(Oktober des Vorjahres) und Nied+ (Juli des Erntejahres), dann hohe Erträge von Äpfeln und Birnen
    Keywords: Holstein ; 1916-1935 und 1921-1941 ; Apfel ; Ertrag ; Korrelationsmethode ; Niederschlag ; Rangordnungsmethode ; Temperatur ; Birne
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    BIBLIOGRAPHY INKA BB
  • 4
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    Landwirtschaftlich beachtliche Windwirkung und Windschutz in der Landwirtschaft. (1943)
    In:  Kulturtechniker, Berlin 46:19-41.
    Details
    Publication Date: 1943
    Description: Bedeutung und Wirkung des Windschutzes auf Anbauart, Fruchtfolge, Gare- und Bodenpflege, Schlageinteilung, Verdunstung, Deck-, Schutz-, Mischfrucht- und Streifenanbau KATASTER-BESCHREIBUNG: Einfluss von Windschutz auf den Ertrag KATASTER-DETAIL: Windschutz +, dann Delta T(Tag) + und Delta T(Nacht)-; Windschutz +, dann Delta Relf +; Windschutz +, dann Verdunstung -; Windschutz +, dann Bodenerosion -; Windschutz +, dann Schneeanhäufung +; angepasste Bodenbearbeitung (schollige, klumpige Bodenoberfläche), dann Wasserhaltungsfähigkeit + -〉 Windschutz +, dann Ertragserhöhung + bzw. ++ (3-400%; ++: Körnerfrüchte auf 20-25vH, Rüben, Gräser, Leguminosen; +: Sommergetreide, Hafer )
    Keywords: weltweit ; letzten100 Jahre ; Boden ; Ertrag ; Niederschlag ; Temperatur ; Verdunstung ; Wind ; Frost
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    BIBLIOGRAPHY INKA BB
  • 5
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    Preliminary Correlation of the Effects of Beveled Trailing Edges on the Hinge-Moment Characteristics of Control Surfaces (1943)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: A study of available data from various tests of beveled control surfaces has been made in an attempt to develop a rational method for predicting the effects of beveled trailing edges on the hinge-moment characteristics of control surfaces in both two- and three-dimensional flow. The results of the study indicated that the change in the included angle at the control-surface trailing edge formed a convenient basis on which a correlation could be made of the effects of various profile modifications on hinge-moment characteristics. It is believed that the formulas developed will allow reasonably accurate predictions of the hinge-moment characteristics of sealed beveled control surfaces if the characteristics of the original control surfaces are known. The presence of a gap at the control-surface hinge increased the effect of beveled trailing edges on the hinge-moment characteristics at small control-surface deflections but the available data were insufficient to allow as complete a correlation as was possible for sealed controls.
    Keywords: Aerodynamics; Aircraft Design, Testing and Performance
    Type: NACA-CB-3E14
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Wind-Tunnel Tests of an NACA 44R-Series Tapered Wing with a Straight Trailing Edge and a Constant-Chord Center Section (1943)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: As part of a general investigation in the NACA 19-foot pressure tunnel to determine stall characteristics and effectiveness of high-lift devices on wings of various sections, tests were made of a tapered. wing having NACA 44R-series airfoil sections. Lift, drag, pitching-moment, and stall characteristics were determined at a Reynolds number of 4,850,000 for the plain wing and for the wing with partial-and with full-span split flaps. The stall progressed slowly over The plain wing; a gradual loss of lift for angles of attack up to and beyond that for the maximum lift coefficient resulted. As Compared with the stall of the plain wing, the initial stall of the wing with either partial-span or full-span flaps deflected occurred at a higher angle of attack and the stall progressed much more rapidly. The maximum lift coefficients at a Reynolds number of 4,850,000 were 1.35 for the plain wing, 2.25 for the wing with partial-span flaps at 60 deg, and 2.67 for the wing with full-span flaps at 60 deg. The positions of the aerodynamic center, in terms of mean chords back of the leading edge of the root section, were approximately 0.458 with no flaps, 0.483 with partial-span flaps at 60 deg, and 0.498 with full-span flaps at 60 deg.
    Keywords: Aerodynamics; Aircraft Design, Testing and Performance
    Type: NACA RB No. 3L13
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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