Results 21 to 30 of about 13,989 (118)
Endoatmospheric Ascent Optimal Guidance with Analytical Nonlinear Trajectory Prediction
International Journal of Aerospace Engineering, Volume 2022, Issue 1, 2022., 2022 In this paper, an endoatmospheric ascent optimal guidance law with terminal constraint is proposed, which is under the framework of predictor‐corrector algorithm. Firstly, a precise analytical nonlinear trajectory prediction with arbitrary Angle of Attack (AOA) profile is derived. This derivation process is divided into two steps.
Shilei Zhao +3 more
wiley +1 more source
International Journal of Aerospace Engineering, Volume 2022, Issue 1, 2022., 2022 Hybrid‐electric technology can be expected to improve the performance of fixed wing vertical takeoff and landing (VTOL) aircraft. In this paper, we demonstrated a method of retrofitting a single‐energy propulsion system prototype with a hybrid‐electric propulsion system.
Jianan Zong +5 more
wiley +1 more source
Advanced Materials, Volume 33, Issue 48, December 2, 2021., 2021 Novel hybrid organic–inorganic–organic isoporous membranes are fabricated via sequential infiltration synthesis and atomic layer deposition within block copolymer membranes followed by addition of functional organic molecules. The membrane pore sizes are controlled by metal oxide growth in a predictive manner.
Zhenzhen Zhang +7 more
wiley +1 more source
Isolated and Paired Metal Sites in Zeolites Using Solid‐State Ion Exchange
Angewandte Chemie, Volume 137, Issue 23, June 2, 2025.Transition metal ions housed in the zeolitic micropore are broadly applied in catalysis. These model active sites provide a link between homogeneous, enzyme, and solid catalysts. The synthetic strategy used to generate these cationic sites has a significant influence on the catalytic activity.
Rio G. Moore, James M. Crawford
wiley +2 more sources
Flow and drag force around a free surface piercing cylinder for environmental applications [PDF]
, 2017 This paper investigates flows around a free surface piercing cylinder with Froude number ...
Cassan, Ludovic +3 more
core +3 more sources
Some Fractional Calculus results associated with the $I$-Function [PDF]
, 2014 The effect of Marichev-Saigo-Maeda (MSM) fractional operators involving third Appell function on the $I$ function is studied. It is shown that the order of the $I$-function increases on application of these operators to the power multiple of the $I ...
Kataria, K. K., Vellaisamy, P.
core +4 more sources
GNSS Signal Authentication via Power and Distortion Monitoring [PDF]
, 2017 We propose a simple low-cost technique that enables civil Global Positioning System (GPS) receivers and other civil global navigation satellite system (GNSS) receivers to reliably detect carry-off spoofing and jamming.
Evans, Brian L. +3 more
core +1 more source
Dynamics of inflationary cosmology in TVSD model [PDF]
, 2002 Within the framework of a model Universe with time variable space dimensions (TVSD), known as decrumpling or TVSD model, we study TVSD chaotic inflation and obtain dynamics of the inflaton, scale factor and spatial dimension.
FOROUGH NASSERI +5 more
core +2 more sources
Limit Cycle on the Forced Vibrations Oscillator with a Time‐Varying Mass
International Journal of Differential Equations, Volume 2024, Issue 1, 2024.In this paper, a forced vibration caused by drag and lift forces with time‐varying mass is studied. The construction of the model is conducted by adding impact force to the previous model. The periodicity of the solution is yet known. Hence, the model is seen as a perturbation problem.
Hartono +4 more
wiley +1 more source
Height Control of Supersonic Sea‐Skimming Missiles Based on Online Parameter Identification
International Journal of Aerospace Engineering, Volume 2024, Issue 1, 2024.This paper presents a height control approach employing real‐time parameter identification for supersonic sea‐skimming missiles. Firstly, an integrated identification technique based on the Unscented Kalman filter was established for supersonic cruise missiles.
Zhenyu Jiang +4 more
wiley +1 more source