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- W1999788656 abstract "This paper investigates the variational stability of a general dual-spin spacecraft consisting of an asymmetric rigid rotor and a flexible platform. Two cases of rotors are considered: constant spin-rate rotors and axially torque-free rotors. The full equations of motion are derived and conditions for the existence of a pure spin motion, referred to as the desired solution, are obtained. A linearization about this solution yields equations with periodic coefficients. A special class of spacecraft is observed, in which the linearized equations are the same for both cases of rotors. Two stability-analysis methods are developed and used for stability analysis of the linearized system under consideration: a numerical scheme based on the Floquet theory and Hsu's single-pass method, and a perturbation method based on the multiple-scales method. A numerical example is presented of a platform consisting of a rigid core and a beam-like antenna extended along the spin axis of the rotor. The effects of the rotor and platform asymmetry, rotor location, and platform damping are demonstrated and explained." @default.
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- W1999788656 date "1991-07-01" @default.
- W1999788656 modified "2023-09-24" @default.
- W1999788656 title "Stability of an asymmetric dual-spin spacecraft with flexible platform" @default.
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- W1999788656 doi "https://doi.org/10.2514/3.20709" @default.
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