Results 21 to 30 of about 114,089 (230)

Designing displaced lunar orbits using low-thrust propulsion [PDF]

open access: yes, 2010
The design of spacecraft trajectories is a crucial task in space mission design. Solar sail technology appears as a promising form of advanced spacecraft propulsion which can enable exciting new space science mission concepts such as solar system ...
Colin R. McInnes   +9 more
core   +1 more source

CHANGE OF RUSSIA’S COMPETITIVE POSITIONS IN THE WORLD MARKET OF SPACE PRODUCTS

open access: yesВестник университета, 2019
Subject of research – the Russian space industry against the background of the main trends of development of the world market of space products. Research objective – to give an assessment to specifics of the competition in the main segments of the world ...
A. P. Krishtofor
doaj   +1 more source

Wrinkling of Orthotropic Viscoelastic Membranes [PDF]

open access: yes, 2010
This paper presents a simplified simulation technique for orthotropic viscoelastic films. Wrinkling is detected by a combined stress-strain criterion and an iterative scheme searches for the wrinkle angle using a pseudo-elastic material stiffness ...
Deng, X., Pellegrino, S.
core   +1 more source

DETERMINANTS OF DEVELOPMENT OF THE INTERNATIONAL SCIENTIFIC AND TECHNICAL COOPERATION IN THE SPACE FIELD WITH RUSSIA`S PARTICIPATION

open access: yesВестник университета, 2019
The present stage of development of the international scientific and technical cooperation in the space industry has been investigated. The main shifts, happening in the geographical directions of the international scientific and technical cooperation in
A. P. Krishtofor
doaj   +1 more source

Theoretical analysis of perching and hovering maneuvers [PDF]

open access: yes, 2013
Unsteady aerodynamic phenomena are encountered in a large number of modern aerospace and non-aerospace applications. Leading edge vortices (LEVs) are of particular interest because of their large impact on the forces and performance.
Beddoes   +15 more
core   +1 more source

Simulation of wind turbine wake interaction using the vorticity transport model [PDF]

open access: yes, 2010
The aerodynamic interactions that can occur within a wind farm can result in the constituent turbines generating a lower power output than would be possible if each of the turbines were operated in isolation.
Ahlin   +15 more
core   +1 more source

Extension-twist coupled laminates for aero-elastic compliant blade design [PDF]

open access: yes, 2012
A definite list of laminate configurations with extension-twisting (and shearing-bending) coupling is derived for up to 21 plies of identical thickness.
York, C.B.
core   +1 more source

Distributing Three-Dimensional Aerodynamic Load to Fem Nodes [PDF]

open access: yesMATEC Web of Conferences, 2019
Aiming at the requirement of the load conversion in aeronautics and astronautics static strength analysis, a three-dimensional aerodynamic load equivalent distribution method based on least squares is proposed.
Weimin Sun
doaj   +1 more source

Welded microstructure and orientation variation of duplex Ti alloy through electrodynamic vibration

open access: yesJournal of Materials Research and Technology, 2022
Duplex Ti alloys are widely used in the petrochemical industry as well as in the biomedical, aeronautics and astronautics engineering fields. A duplex Ti alloy weldment is uniform and has superior properties in terms of welded microstructure evolution ...
Chia-Heng Liu   +5 more
doaj   +1 more source

Inflatable structures for Mars Base 10 [PDF]

open access: yes, 2012
A permanent manned settlement on the Martian surface requires the use of advanced technology concepts in order to become technically and financially feasible.
Doule, Ondrej, Sinn, Thomas
core   +1 more source

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