Results 91 to 100 of about 1,411 (123)

Residual nutation angle of satellites with viscous nutation dampers

Acta Astronautica, 1987
Abstract The residual nutation angle of satellites with the viscous fluid dampers is one of the important indexes for designing the spinning satellites of high nutation precision. This paper will specifically discuss the reasons why the viscous dampers make the residual angle occur.
exaly   +2 more sources

Suppression of Nutation Angle Variation in Pulsed Nuclear Magnetic Resonance

Review of Scientific Instruments, 1970
In pulsed nuclear magnetic resonance a random variation of the nutation angle is produced if the rf pulse initiation occurs at a random phase with respect to the rf carrier. The effect is most important at low resonance frequencies and large rf pulse amplitudes.
Maclaughlin D E
exaly   +2 more sources

Nutation Magic-Angle-Spinning Spectra of Half-Integer Quadrupole Spin Systems

Journal of Magnetic Resonance Series A, 1995
Abstract The nutation spectra of spin- 3 2 and spin- 5 2 nuclei under magic-angle spinning (MAS) were investigated in detail. When the nutation time is larger than a spinning period, the lineshape of a nutation spectrum is evidently changed by MAS.
S.W. Ding, C.A. Mcdowell
exaly   +2 more sources

Estimate of the Error Owing to Neglect of the Earth’s Triaxiality in the Transfer Function for Nutation Angle Calculations

Measurement Techniques, 2015
The error owing to the use of a transfer function for a biaxial earth in calculating the nutation angles on a nanosecond accuracy level is estimated. The corresponding errors in the absolute magnitudes of the nutation angles for different amounts of dynamic compression of the earth’s core are obtained.
S L Pasynok, Pasynok S L
exaly   +2 more sources

Angle Error Detection of Local Oscillator Nutation Based on Acousto-Optic Deflector in Fine Tracking System

Zhongguo Jiguang/Chinese Journal of Lasers, 2018
贺红雨 He Hongyu, 孙建锋 Sun Jianfeng, 侯培培 Hou Peipei, 张波 Zhang Bo, 许蒙蒙 Xu Mengmeng, 劳陈哲 Lao Chenzhe   +5 more
exaly   +2 more sources

Influence of the nutation angle of a steel impact at high-velocity interaction with a concrete barrier

AIP Conference Proceedings, 2020
Interaction of elongated steel cylindrical strikers with concrete barriers at a velocity of 1000 m/s is studied numerically. The problem is solved by the finite element method, in a three-dimensional formulation within the framework of the phenomenological approach to the mechanics of a deformable solid using the author's software package EFES.
P. Radchenko, S. Batuev, A. Radchenko
openaire   +1 more source

A new look at the method of variable nutation angle for the measurement of spin-lattice relaxation times using fourier transform NMR

Journal of Magnetic Resonance, 1977
exaly   +2 more sources

Two-dimensional nutation exchange NQR spectroscopy: direct determination of rotational angles

Molecular Physics, 2002
A new method for the direct determination of rotational angles based on 2-dimensional nutation exchange NQR spectroscopy is proposed. The method involves the detection of exchange processes through NQR nutation spectra recorded after the mixing interval.
N. SINYAVSKY, D. NIKOLAEV, M. MAĆKOWIAK
openaire   +1 more source

Research on measurement of flying object nutation angle based on double linear CCD intersection

SPIE Proceedings, 2012
The importance of space scale matching of flying direction and object long axis is presented when we measure nutation angle of flying object with slit photography, and a new method to measure nutation angle of flying object combined slit photography and double linear CCD intersection is examined.
Weihong Ma, Qiuhong Pang, Jinping Ni
openaire   +1 more source

Influence of the nutation angle in gravitational settling of particles near vortices and in turbulence

European Journal of Mechanics - B/Fluids, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources