Results 41 to 50 of about 271,699 (362)

Relativistic analysis of the LISA long range optical links [PDF]

open access: yes, 2005
The joint ESA/NASA LISA mission consists in three spacecraft on heliocentric orbits, flying in a triangular formation of 5 Mkm each side, linked by infrared optical beams.
Bertrand Chauvineau   +7 more
core   +3 more sources

Armoring Boron Nitride with Pyrolytic Carbon Layers for Tunable Rigidity and Flexibility

open access: yesAdvanced Science, EarlyView.
By precisely controlling the thickness of the PyC armor, the BN@PyC aerogel achieves a remarkable transformation in mechanical properties, spanning multiple orders of magnitude from flexibility to rigidity, while simultaneously exhibiting versatility, including elastic responsive conductivity, enhanced thermal conductivity, and outstanding ablative ...
Meng Lan   +5 more
wiley   +1 more source

Research on Torque Loading Technology Based on L Lever in Spacecraft Bolt

open access: yesMATEC Web of Conferences, 2015
As the main form of structure assembly, the stability of bolt joint is directly related to the performance of spacecraft. This essay is used to analyze the cause of standard torque spanner which is not suitable to the tightening torque and summarized ...
Song Xiaohui, Liu Zhibin, Liu Zhe
doaj   +1 more source

A charging model for three-axis stabilized spacecraft [PDF]

open access: yes, 1977
A charging model was developed for geosynchronous, three-axis stabilized spacecraft when under the influence of a geomagnetic substorm. The differential charging potentials between the thermally coated or blanketed outer surfaces and metallic structure ...
Green, T., Ling, D., Massaro, M. J.
core   +1 more source

Wide Linearity Range and Rapid‐Response Tactile Sensor Inspired by Parallel Structures

open access: yesAdvanced Science, EarlyView.
Inspired by parallel structures, a composite tactile sensor design is proposed using parallel elastomer integration, developing two novel sensors. This strategy optimizes the force‐electric response and viscoelastic hysteresis of the conductive composite, achieving a balanced enhancement of linear sensing range and fast response.
Weihua Gao   +7 more
wiley   +1 more source

Active spacecraft potential control system selection for the Jupiter orbiter with probe mission [PDF]

open access: yes, 1977
It is shown that the high flux of energetic plasma electrons and the reduced photoemission rate in the Jovian environment can result in the spacecraft developing a large negative potential.
Beattie, J. R., Goldstein, R.
core   +1 more source

Distributed Adaptive Attitude Synchronization of Multiple Spacecraft

open access: yes, 2011
This paper addresses the distributed attitude synchronization problem of multiple spacecraft with unknown inertia matrices. Two distributed adaptive controllers are proposed for the cases with and without a virtual leader to which a time-varying ...
A. Abdessameud   +26 more
core   +1 more source

In Situ Formation of Mechanically Interlocked Heterointerfaces with Ultrahigh Bonding Strength for Mg‐Based Multilayered Sheets

open access: yesAdvanced Science, EarlyView.
Crystal‐orientation controlled hot‐rolling strategy creates Mg‐Ta immiscible composites featuring mechanically interlocked in situ formed interfaces (80.5 MPa bond strength) and excellent tensile properties (340–395 MPa UTS). Systematic multiscale investigations reveal a serration‐size‐dependent bonding mechanism and a three‐stage interfacial evolution
Zhilei Yu   +8 more
wiley   +1 more source

Active control of potential of the geosynchronous satellites ATS-5 and ATS-6 [PDF]

open access: yes, 1977
The ATS-6 geosynchronous satellite carries two cesium ion thrusters as part of the technology experiment package. Their effectiveness in controlling the spacecraft potential was shown during normal operation of the thrusters.
Goldstein, R.
core   +1 more source

Coverable Self‐Cleaning Glass via Abnormal Transport and Jump of Charged Particles

open access: yesAdvanced Science, EarlyView.
The abnormal reverse lateral transport behavior of charged particles is reported. The mechanism of transport and jump behaviors of charged particles is revealed. Furthermore, a transparent and simple self‐cleaning glass driven by the electric field is developed.
Meng Yang   +8 more
wiley   +1 more source

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