Spacecraft structure
Application of the restoring force surface method to a real-life spacecraft structure
... SmallSat structure supports a telescope dummy composed of two stages of base-plates and struts supporting various con- centrated masses; its mass is around 140 ...for Spacecraft and Adaptator) [16] , the ...
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Dynamics of a Strongly Nonlinear Spacecraft Structure Part II: Modal Analysis
... real-life spacecraft structure with a strongly nonlinear ...SmallSat spacecraft may exhibit, including jumps, rich frequency content, quasiperiodic motion, in- ternal resonance branches with ...
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Dynamics of a Strongly Nonlinear Spacecraft Structure Part I: Experimental Identification
... The spacecraft structure supports a dummy telescope mounted on a baseplate through a tripod; its mass is around 140 ...for spacecraft and adaptor ...
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Bifurcation analysis of a spacecraft structure using the harmonic balance method
... SmallSat spacecraft, an industrial and complex model with several localized ...the structure showed that high amplitude quasiperiodic oscillations emanate from the NS ...the structure, if a reduction ...
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Reliability approach in spacecraft structures
... In this paper we propose to use first or second order polynomial functions which are sufficiently well suited approximations in case of linear elastic behavior un- der static load with low variation on parameters. In the ...
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Reliability approach in spacecraft structures
... In this paper we propose to use first or second order polynomial functions which are sufficiently well suited approximations in case of linear elastic behavior un- der static load with low variation on parameters. In the ...
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Cooperative control of two active spacecraft during proximity operations
... Since the two vehicles in this test have been commanded to perform an approach maneuver, the cooperative controller must select the acceleration jets to be fired from either the s[r] ...
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Embedded and validated control algorithms for the spacecraft rendezvous
... 1.2.2 Synthesis model In this section, the model representing the relative dynamics between spacecraft that will be used throughout this dissertation for the development of control algorithms is presented. Several ...
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Improving Spacecraft Health Monitoring with Automatic Anomaly Detection Techniques
... CNES spacecraft using two complementary methods: an automatic Out-Of-Limits (OOL) checking executed on a set of critical parameters after each new telemetry reception, and a monthly monitoring of statistical ...
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Robust design of spacecraft structures under lack of knowledge
... MEDYNA 2013 23-25 Apr 2013, Marrakech (Morocco) 2 1 INTRODUCTION Methods for the robust design of mechanical systems have for objective to reduce the variability in system performance with respect to uncertainties in ...
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SWAP and LYRA: space weather from a small spacecraft
... SWAP will perform as an operational solar monitoring tool for space weather forecasting while it will also demonstrate new technological solutions: CMOSlAPS detector, ne[r] ...
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Improving Spacecraft Health Monitoring with Automatic Anomaly Detection Techniques
... the spacecraft beginning of life to create a mathematical model of the nominal behavior of the spacecraft, with the underlying hypothesis that the anomalous events in this reference telemetry are ...current ...
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Autonomous guidance & control of earth-orbiting formation flying spacecraft
... The proposed guidance algorithm computes the set of desired positions for all space- craft by minimizing a cost function J that takes into account the total fuel expenditure, the accura[r] ...
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Spacecraft potential control aboard Equator-S as a test for Cluster-II
... small spacecraft of less than 235 kg dry mass, Equator-S carried a complete payload for plasma and ®eld investigations in the Earth's ...and spacecraft potential measurements in the traditional double probe ...
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Design optimization of thermal paths in spacecraft systems
... the spacecraft deck surface to ensure most of the heat load travels to ...truss structure and the electronics box – a radiator dissipates the net heat load of the telescope truss structure and the ...
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Computer vision based navigation for spacecraft proximity operations
... 1.1.2 Computer Vision for Proximity Operations The use of computer vision for proximity navigation provides a number of advantages over other sensing technologies. Visual navigation sensors can be made to be small and ...
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Designing Continuously Constrained Spacecraft Relative Trajectories for Proximity Operations
... B. Orbital rendezvous under passive safety constraints An important issue for the guidance algorithms for spacecraft proximity operations like orbital rendezvous and docking is the ability to handle abnormal ...
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Constrained periodic spacecraft relative motion using non-negative polynomials
... the spacecraft, Inalhan obtained in [4] a periodicity condition at perigee, for the linearized relative motion and for arbitrary ...for spacecraft formation ...
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A combination of structurally connected and multiple spacecraft interferometers
... Instead of a series of plots, one for each baseline, showing the total mass of the SCI and MSI configurations as a function of mission duration, only one plot sh[r] ...
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Closed-loop control of spacecraft formations with applications on SPHERES
... Overall, provided the sensing is very good (consistent with the latest technology), accurate AV implementation of plans enables both greater precision in formation fl[r] ...
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