Results 261 to 270 of about 27,955 (309)

Predicting Maximum Lift Coefficient for Compound Wings Using Lifting Line Theory

Journal of Aircraft, 2021
In the context of conceptual design there are low-fidelity lifting line models capable of predicting the maximum lift coefficient of trapezoidal twisted wings.
Oliverio E. Velazquez Salazar, François Morency, Julien Weiss   +2 more
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Invertible deinterlacing with variable coefficients and its lifting implementation

2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)., 2003
Invertible deinterlacing with variable coefficients is proposed to suppress comb-tooth artifacts caused by field interleaving of interlaced scanning video. A vertical highpass filter is applied to detect moving artifacts around boundaries of moving objects.
Takuma Ishida, Shogo Muramatsu, Hisakazu Kikuchi, Tetsuro Kuge   +3 more
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Constant Lift Coefficient Turns

Journal of Aircraft, 2005
Lateral displacement in a U-turn may become a problem when aircraft position has to be accurately maintained, but the excess thrust is inadequate to sustain level turn of sufficiently small radius. It seems plausible that lateral displacement in a U-turn can be diminished at the expense of mechanical energy: This trade of energy is the subject matter ...
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Predicting Maximum Lift Coefficient for Twisted Wings Using Lifting-Line Theory

45th AIAA Aerospace Sciences Meeting and Exhibit, 2007
A method is presented that allows one to predict the maximum lift coefficient for a wing from knowledge of wing geometry and maximum airfoil section lift coefficient. The method applies to wings of arbitrary planform and includes the effects of twist and sweep.
W. F. Phillips, N. R. Alley
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Congruences for fourier coefficients of lifted siegel modular forms I: Eisenstein lifts

Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg, 2005
The author asks the following question: Does a lifting of modular forms preserve congruences for Fourier coefficients? In this paper he gives an affirmative answer in case of the Eisenstein lift. Let \(S^r_k\) denote the space of cusp forms of even weight \(k> 0\) with respect to the modular group \(\Gamma_r\) of degree \(r\).
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Congruences for Fourier coefficients of lifted Siegel modular forms II: The Ikeda lifts

Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg, 2007
In part I [Abh. Math. Semin. Univ. Hamb. 75, 97--120 (2005; Zbl 1088.11032)], the author studied whether a congruence for Fourier coefficients of Siegel modular forms is preserved under Eisenstein lifts. Now he proves criteria for the preservation of such congruences under two types of lifts [\textit{T. Ikeda}, Ann. Math. (2) 154, No. 3, 641--681 (2001;
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Drag and lift coefficients evolution of a Savonius rotor

Experiments in Fluids, 1989
The lift and drag coefficients of the rotating Savonius wind machine are determined from the pressure difference measured between the upper plane and the lower plane of a blade. Pressure measurements have been performed for two sets of experiments; the first one for U ∞ = 10 m/s and the second one for U ∞ = 12.5 m/s. In each case it is to be noted that
A. Chauvin, D. Benghrib
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Denominators of the Weierstrass coefficients of the canonical lifting

Bulletin des Sciences Mathématiques
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Luís R.A. Finotti, Delong Li
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Intelligence Evaluating System of Lift Balancing Coefficient

2015 International Conference on Intelligent Transportation, Big Data and Smart City, 2015
Based on designing the solving algorithm of balancing coefficient, the application system of lift balancing coefficient automatic drawing and printing was develop by using C#.net programming language. On this application system, the graphic chart can be output quickly and accurately by computer.
Dong Haoming, Xu Guifang, Chen Zheng
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Lifting based integer wavelet transform with binary coefficients

2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353), 2003
A family of lifting based integer wavelet transform (IWT) that is parametrised in a simple manner by one free parameter is presented in this paper. The coefficients of the lifting filters in this family are binary numbers and therefore can be implemented efficiently without using any multipliers.
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