Results 11 to 20 of about 14,714 (253)
Comparison of free vortex wake and blade element momentum results against large-eddy simulation results for highly flexible turbines under challenging inflow conditions [PDF]
Wind Energy Science, 2023 Throughout wind energy development, there has been a push to increase wind turbine size due to the substantial economic benefits. However, increasing turbine size presents several challenges, both physically and computationally.
K. Shaler +4 more
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An improved initial alignment method based on adaptive robust CKF algorithm
Xibei Gongye Daxue Xuebao, 2022 When the misalignment angle is a large angle in the strapdown inertial navigation system (SINS), it is necessary to establish a nonlinear error model to estimate the error.
LI Pu, YANG Tao, MU Hongwei
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A new predictive filter for nonlinear alignment model of stationary MEMS inertial sensors [PDF]
Metrology and Measurement Systems, 2021 This paper proposes a new approach called the Predictive Kalman Filter (PKF) which predicts and compensates model errors of inertial sensors to improve the accuracy of static alignment without the use of external assistance.
Hassan Majed Alhassan +1 more
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Magnetic Misalignment of Interstellar Dust Filaments
The Astrophysical Journal, 2023 We present evidence for scale-independent misalignment of interstellar dust filaments and magnetic fields. We estimate the misalignment by comparing millimeter-wave dust-polarization measurements from Planck with filamentary structures identified in ...
Ari J. Cukierman +2 more
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On the Large Apparent Black Hole Spin-orbit Misalignment Angle in GW200115
The Astrophysical Journal Letters, 2021 Abstract GW200115 is one of the first two confidently detected gravitational-wave events of neutron star–black hole mergers. An interesting property of this merger is that the black hole, if spinning rapidly, has its spin axis negatively aligned (with a misalignment angle >90°) with the binary orbital angular momentum vector. Although
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A Novel Polar Rapid Transfer Alignment for Shipborne SINS Under Arbitrary Misalignments
IEEE Access, 2020 The traditional polar rapid transfer alignment (RTA) are generally modeled under small angle misalignment assumption. Those linearized and nonlinear polar RTA error models presented, so far, are not capable of accurately representing the nonlinear ...
Jianhua Cheng +3 more
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Additive Manufacturing Letters, 2023 The shape variation of the laser beam is evidently observed in the laser powder bed fusion (LPBF) process because of changes in laser incidence angle and misalignment between the build plate and the laser focus plane.
Erlei Li +4 more
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Air-Launch Experiment Using Suspended Rail Launcher for Rockoon
Aerospace, 2021 The method of air-launching a rocket using a launcher suspended from a balloon, referred to as a rockoon, can improve the flight performance of small rockets.
Tadayoshi Shoyama +6 more
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An Improved ACKF/KF Initial Alignment Method for Odometer-Aided Strapdown Inertial Navigation System
Sensors, 2018 For a land-vehicle strapdown inertial navigation system (SINS), the problem of initial alignment with large misalignment angle in-motion needs to be solved urgently.
Kang Gao +4 more
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Mathematical Problems in Engineering, 2021 When the strapdown inertial navigation system does not perform coarse alignment, the misalignment angle is generally a large angle, and a nonlinear error model and a nonlinear filtering method are required. For large azimuth misalignment, the initial alignment technology with a large azimuth misalignment angle is researched in this paper.
Zhang Bing +4 more
openaire +2 more sources