Results 21 to 30 of about 118,726 (281)

Deflecting small asteroids using laser ablation : Deep space navigation and asteroid orbit control for LightTouch2 Mission [PDF]

open access: yes, 2013
This paper presents a low-cost, low mass, mission design to successfully intercept and deflect a small and faint, 4 m in diameter asteroid. Intended to be launched after 2025, the laser-ablating mission, LightTouch2 will be used to deflect the orbit of ...
Branco, Joao   +4 more
core   +1 more source

Mots et discours de science dans la science-fiction

open access: yesSocio, 2019
Science fiction has close ties with science, as we know, but this article focuses more specifically on the words of science, the scientific vocabulary, which we often find in science fiction texts and, in particular, on the enlightening way in which ...
Ugo Bellagamba, Roland Lehoucq
doaj   +1 more source

Mirror formation control in the vicinity of an asteroid [PDF]

open access: yes, 2008
Two strategies are presented for the positioning and control of a spacecraft formation designed to focus sunlight onto a point on the surface of asteroid, thereby sublimating the material and ejecting debris creating thrust.
Battin R. H.   +11 more
core   +2 more sources

Comparative analysis of alternative fuels in detonation combustion [PDF]

open access: yes, 2016
Detonation combustion prominently exhibits high thermodynamic efficiency which leads to better performance. As compared to the conventionally used isobaric heat addition in a Brayton cycle combustor, detonation uses a novel isochoric Humphrey cycle which
Azami, M. H., Savill, Mark A.
core   +1 more source

Investigation of the aerodynamic characteristics of a lifting body in ground proximity [PDF]

open access: yes, 2016
The use of cambered hull shapes in the next generation of lighter-than-air vehicles to enhance aerodynamic performance, together with optimized take-off manoeuvre profiles, will require a more detailed understanding of ground proximity effects for such
Garry, Kevin P.   +2 more
core   +1 more source

MACROECONOMIC ASPECTS OF THE ANALYSIS OF THE WORLD MARKET OF SPACE PRODUCTS AND SERVICES

open access: yesВестник университета, 2019
The main organizational characteristics of the world space industry in the context of increased international competition have been determined. The most characteristic changes in the global market of space products have been identified.
A. Krishtofor
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

Convair Astronautics, San Diego (California)

open access: yesInformes de la Construccion, 1960
Este brillante y espectacular complejo industrial se ha creado especialmente para la investigación y fabricación de cohetes intercontinentales y vehículos del espacio de las Fuerzas Aéreas de los EE.
Arquitectos Pereira & Luckmam
doaj   +1 more source

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

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