Results 71 to 80 of about 107,600 (223)

The Collaborative Spark That Ignited the Field of Stromal Stem Cell Biology

open access: yesBioengineering
Russia has produced many scientists of great renown in a multitude of fields from chemistry, physics, astronautics, and mathematics to biology, pathology, and medicine [...]
James T. Triffitt
doaj   +1 more source

Solar sail formation flying for deep-space remote sensing [PDF]

open access: yes, 2009
In this paper we consider how 'near' term solar sails can be used in formation above the ecliptic plane to provide platforms for accurate and continuous remote sensing of the polar regions of the Earth.
Biggs J. D.   +5 more
core   +1 more source

Versatile Rigid‐Flexible Coupling Modules: Enhancing Soft Origami Structures with Cable‐Driven Parallel Mechanisms

open access: yesAdvanced Intelligent Systems, EarlyView.
This work introduces a rigid‐flexible coupling building block by combining rigid parallel structures with soft origami structures. Through theoretical and experimental analysis, geometric parameters are optimized to achieve kinematic synergy between the two structures.
Ji Wang   +8 more
wiley   +1 more source

A case study of curriculum development related to the space environment and emerging space weather markets [PDF]

open access: yesAdvances in Geosciences, 2005
Space weather is a new subject which has not yet become widely understood or appreciated. The University offers the unique opportunity to develop knowledge and understanding about space weather that can then be applied as graduates enter the mainstream ...
Y. Tulunay, E. Tulunay, E. Tulunay
doaj  

Research on High-Precision Attitude Control of Joint Actuator of Three-Axis Air-Bearing Test Bed

open access: yesJournal of Control Science and Engineering, 2021
Three-axis air-bearing test bed is important semiphysical simulation equipment for spacecraft, which can simulate spacecraft attitude control, rendezvous, and docking with high confidence.
Zhiming Chen   +4 more
doaj   +1 more source

Orbital dynamics of earth-orbiting 'smart dust' spacecraft under the effects of solar radiation pressure and aerodynamic drag [PDF]

open access: yes, 2010
This paper investigates how the perturbations due to asymmetric solar radiation pressure, in presence of Earth's shadow, and atmospheric drag can be balanced to obtain long-lived Earth centered orbits for swarms of SpaceChips, without the use of active ...
Colombo, C., McInnes, C.R.
core   +1 more source

Low-energy particle radiation environment at synchronous altitude [PDF]

open access: yes, 1972
The degradation of thermal control coatings of satellites due to the effects of low energy charged particles in the space environment is discussed. Data obtained from ATS-5 satellite measurement of proton and electron fluxes are presented. The variations
Lens, S. K., Shelley, E. G.
core   +1 more source

Implicit large-eddy simulation of compressible flows using the Interior Embedded Discontinuous Galerkin method [PDF]

open access: yes, 2016
We present a high-order implicit large-eddy simulation (ILES) approach for simulating transitional turbulent flows. The approach consists of an Interior Embedded Discontinuous Galerkin (IEDG) method for the discretization of the compressible Navier ...
Fernandez, Pablo   +3 more
core   +2 more sources

Aligned Carbon Nanotube Polymer Nanocomposite Bipolar Plates Technology for Vanadium Redox Flow Batteries

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A novel manufacturing technique enables the fabrication of HACN‐BP, an advanced aligned CNT nanocomposite. By transforming VA‐CNTs into a highly dense structure (59% CNT vol.), HACN‐BP achieves outstanding electrical conductivity in both in‐plane and thickness directions while minimizing electrolyte permeability. When integrated into VRFBs, it enhances
Jae‐Moon Jeong   +8 more
wiley   +1 more source

2º Brazilian Aerospace Congress

open access: yesJournal of Aerospace Technology and Management, 2020
The Brazilian Aerospace Congress (CAB) is an event that aims at the synergy of institutions related to the Brazilian aeronautical and astronautics sector.
André Luis da Silva   +1 more
doaj  

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