scholarly journals Determination of the survival probability of a launch vehicle risingthrough a random wind field.

1966 ◽  
Vol 3 (4) ◽  
pp. 472-476 ◽  
Author(s):  
FERDINAND P. BEER ◽  
WILLIAM C. LENNOX
Keyword(s):  
Survival Probability ◽  
Wind Field ◽  
Launch Vehicle

Determination of the wind field over sea

1997 ◽  
Author(s):  
Christian Werner
Keyword(s):  
Wind Field

Determination of domain for diagnostic wind field estimation in Korea

2000 ◽  
Vol 34 (4) ◽  
pp. 595-601 ◽  
Author(s):  
Jin Young Kim ◽  
Young Sung Ghim ◽  
Yong Pyo Kim ◽  
Donald Dabdub
Keyword(s):  
Wind Field ◽  
Field Estimation

Galerkin Scheme-Based Determination of Survival Probability of Oscillators With Fractional Derivative Elements

2016 ◽  
Vol 83 (12) ◽  
Author(s):  
Pol D. Spanos ◽  
Alberto Di Matteo ◽  
Yezeng Cheng ◽  
Antonina Pirrotta ◽  
Jie Li
Keyword(s):  
Fractional Derivative ◽  
Survival Probability ◽  
Stochastic Averaging ◽  
Kolmogorov Equation ◽  
System Response ◽  
Statistical Linearization ◽  
Van Der Pol ◽  
Galerkin Scheme ◽  
Confluent Hypergeometric Functions

In this paper, an approximate semi-analytical approach is developed for determining the first-passage probability of randomly excited linear and lightly nonlinear oscillators endowed with fractional derivative elements. The amplitude of the system response is modeled as one-dimensional Markovian process by employing a combination of the stochastic averaging and the statistical linearization techniques. This leads to a backward Kolmogorov equation which governs the evolution of the survival probability of the oscillator. Next, an approximate solution of this equation is sought by resorting to a Galerkin scheme. Specifically, a convenient set of confluent hypergeometric functions, related to the corresponding linear oscillator with integer-order derivatives, is used as orthogonal basis for this scheme. Applications to the standard viscous linear and to nonlinear (Van der Pol and Duffing) oscillators are presented. Comparisons with pertinent Monte Carlo simulations demonstrate the reliability of the proposed approximate analytical solution.

Perpendicular-to-Grain Strength of Douglas-Fir

1975 ◽  
Vol 2 (1) ◽  
pp. 50-57 ◽  
Author(s):  
J. D. Barrett ◽  
R. O. Foschi ◽  
S. P. Fox
Keyword(s):  
Experimental Data ◽  
Brittle Fracture ◽  
Survival Probability ◽  
Douglas Fir ◽  
Curved Beams ◽  
Allowable Stresses ◽  
Laminated Material

Weibull's theory of brittle fracture is applied to the determination of strength of Douglas-fir wood in tension perpendicular to the grain. Results from tests on blocks of glued-laminated material uniformly stressed in tension are used to derive ultimate stresses, at a given survival probability, for pitched-tapered beams, curved beams, and griplam nail connections. The results of the theory are shown to be in agreement with experimental data. Allowable stresses are derived for blocks, pitched-tapered beams, curved beams, and the particular nailed connection studied.

scholarly journals Determination of the parameters of motion of the gas–liquid interface in the fuel tanks of launch vehicle space stages in passive portions of the flight

2017 ◽  
Vol 2017 (4) ◽  
pp. 26-40 ◽  
Author(s):  
O.D. Nikolayev ◽  
◽  
I.D. Bashliy ◽  
N.F. Sviridenko ◽  
N.V. Khoriak ◽  
...  
Keyword(s):  
Launch Vehicle ◽  
Liquid Interface ◽  
Fuel Tanks
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