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Deployment Dynamic Modeling and Driving Schemes for a Ring-Truss Deployable Antenna
Chinese Journal of Mechanical EngineeringMesh reflector antennas are widely used in space tasks owing to their light weight, high surface accuracy, and large folding ratio. They are stowed during launch and then fully deployed in orbit to form a mesh reflector that transmits signals.
Baiyan He +5 more
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A DIY Ultrasonic Signal Generator for Sound Experiments [PDF]
arXiv, 2016 Many physics departments around the world have electronic and mechanical workshops attached to them. The job of these workshops is to design and build experimental setups and instruments for research and the training of undergraduate students. However, in developing countries such as Sudan the lack of qualified technicians and adequately equipped ...
arxiv
Design guidelines for remotely maintainable equipment [PDF]
The quantity and complexity of on-orbit assets will increase significantly over the next decade. Maintaining and servicing these costly assets represent a difficult challenge.
Clarke, Margaret M., Manouchehri, Davoud
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Chengshi guidao jiaotong yanjiu[Objective] In order to reduce the purchase cost and operation and maintenance cost of urban rail transit vehicles as much as possible, balanced maintenance system is adopted in some cities in China.
Tao HUANG, Zhengyuan ZHANG, Shixi SHI
doaj +1 more source
Heterogeneous information network model for equipment-standard system [PDF]
, 2017 Entity information network is used to describe structural relationships between entities. Taking advantage of its extension and heterogeneity, entity information network is more and more widely applied to relationship modeling. Recent years, lots of researches about entity information network modeling have been proposed, while seldom of them ...
arxiv +1 more source
Design of equipment for lunar dust removal [PDF]
NASA has a long range goal of constructing a fully equipped, manned lunar base on the near side of the moon by the year 2015. During the Apollo Missions, lunar dust coated and fouled equipment surfaces and mechanisms exposed to the lunar environment.
Belden, Lacy +5 more
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Apparatus for purging systems handling toxic, corrosive, noxious and other fluids Patent [PDF]
, 1967 Fluid transferring system design for purging toxic, corrosive, or noxious fluids and fumes from materials handling equipment for cleansing and accident ...
Gehring, W. E., Hellmann, R. F.
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A comb-brushing-type green soybean pod harvesting equipment: Design and experiment. [PDF]
PLoS One, 2023 Zhao Y +6 more
europepmc +1 more source
Design for orientation of balloon-borne equipment [PDF]
Balloon-borne equipment consisting of gamma ray telescope with array of particle ...
Anderson, G. A.
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Development of a high stability pointing mechanism for wide application [PDF]
, 1982 A recurrent requirement of spaceborne instruments and communications equipment is that of accurate pointing. This need is recognizable in such diverse applications as Star Sensor trimming, Momentum Wheel gimballing, in-orbit adjustment or alignment of ...
Bentall, R. H., Brunnen, A. J. D.
core +1 more source