by Naval Postgraduate School, Available from National Technical Information Service in Monterey, Calif, Springfield, Va .
Written in English
A preliminary design of the Navy Postgraduate School Mini-Satellite consists of a long cylindrical body and four radial booms and uses the single spin stabilization scheme for its attitude control. Stability conditions between design parameters for simple spinning motions of the satellite in space are investigated by applying Liapunov stability theory and using the natural modes as the admissible functions of internal coordinates. The stability diagram from this study shows that the internal stability conditions due to the flexibility of booms limit the angular velocity range of simple spins while the Maximum Axis Rule limit the minimum lengths of booms. Keywords: Flexural structures; Satellite attitude; Spin stabilization; Satellite booms.
|Statement||by K.S. Kim, and Y.S. Shin|
|Contributions||Shin, Y. S., Naval Postgraduate School (U.S.). Dept. of Mechanical Engineering|
|The Physical Object|
|Pagination||27 p. :|
|Number of Pages||27|
Naval Postgraduate School (if 62 applicable) Naval Postgraduate School (NPS) Orion Mini-satellite will be a prototype low cost, general purpose space vehicle booms have been added to the Orion for additional stability. Spin-stabilization of a cylindrical satellite is shown in Figure Although spin-stabilization is the simplest. Eventually, the maximum-inertia rule for ensuring spin stability under energy dissipation became well established and many commercial and scientific satellites have utilized this technique successfully. In this paper we use the term ‘attitude’ for the ‘stabilized direction’ which refers to the pointing direction of the spin tonyasgaapartments.com by: 8. Green chemistry methods for synthesising metal oxides nanoparticles (NPs) have been extensively used due to their tremendous and remarkable advantages Author: A.K.H Bashir, A.K.H Bashir, N. Matinise, N. Matinise, J. Sackey, J. Sackey, K. Kaviyarasu, K. Kaviya. Then it describes and discusses the unique properties of nanoparticles: superparamagnetic behavior, blocking temperature, enhanced magnetic anisotropy, core/shell structure of nanoparticles, where Fe 3 + atoms exhibit low-spin properties in the surface monoatomic layer of the high-spin shell, the quantum size effect in optical absorption, the ability to manipulate the superparamagnetic properties of NPs under irradiation, and the possibility to consider NPs .
From the kinetic and thermodynamic points of view, the fluorescence stability of AIE polymeric NPs may be enhanced by using matrix polymers with a less hydrophobicity or with a higher T g, or fabrication of a less hydrophobic polymeric shell on the PSt/MPPS NPs. The results of this work may contribute to understanding the fluorescence instability of AIE polymeric NPs in aqueous emulsions, and guide the synthesis of AIE polymeric NPs Cited by: 1. The objective of the present study is to improve the phase stability and magnetic properties of MZF NPs in order to envisage them as future high density soft ferrites for high-frequency applications. Apr 01, · Early in this investigation it was found that of the four similar-structured proteins NPs 1–4, NP2 provides by far the simplest NMR spectra. Hence, we recently reported the assignment of all of the heme resonances of NP2 in its low-spin N- methylimidazole and ImH complexes, as well as nearly complete assignment of the heme resonances of this Cited by: A thick slurry of AlMn x Cr y O z NPs in ethanol was prepared and it was used to coat onto the GCE as a layer of thin film of NPs. Then the mixed oxide-coated GCE was dried at ambient condition. Then the mixed oxide-coated GCE was dried at ambient tonyasgaapartments.com: M.M. Alam, Abdullah M. Asiri, Mohammed M. Rahman, M.A. Islam.
Investigation on stability and viscosity of SiO2–CH3OH (methanol) nanofluids Article in International Communications in Heat and Mass Transfer 72 · February with 75 Reads How we measure. A Magnetostructural Investigation of an Abrupt Spin Transition for 1-Phenyltrifluoromethyl-1,4-dihydrobenzo[e][1,2,4]triazinyl The Critical Role of Substrate in Stabilizing Phosphorene Nanoflake: A Theoretical Exploration. The transfer of these NPs to a stable suspension is still under investigation. For example, attempts were made to co-deposit NPs from the vapour phase with a beam of water vapour, methanol, or isopropanol onto a nitrogen-cooled substrate [37, 38]. However, the stability . Calhoun: The NPS Institutional Archive Theses and Dissertations Thesis Collection Prediction of attitude stability of asymmetric dual-spin stabilized spacecraft using improved liquid.