Small business innovation research. Abstracts of completed 1987 phase 1 projects [PDF]
Non-proprietary summaries of Phase 1 Small Business Innovation Research (SBIR) projects supported by NASA in the 1987 program year are given. Work in the areas of aeronautical propulsion, aerodynamics, acoustics, aircraft systems, materials and ...
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Physics of E × B discharges relevant to plasma propulsion and similar technologies
, 2020 This paper provides perspectives on recent progress in understanding the physics of devices in which the external magnetic field is applied perpendicular to the discharge current.
I. Kaganovich +24 more
semanticscholar +1 more source
Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight
Experimental Physiology, EarlyView.Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley +1 more source
Nuclear radiation problems, unmanned thermionic reactor ion propulsion spacecraft [PDF]
, 1972 A nuclear thermionic reactor as the electric power source for an electric propulsion spacecraft introduces a nuclear radiation environment that affects the spacecraft configuration, the use and location of electrical insulators and the science ...
Mondt, J. F. +2 more
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Extension of highly elliptical Earth orbits using continuous low-thrust propulsion [PDF]
, 2013 The extension of highly elliptical orbits, with free selection of orbit period, using low thrust propulsion is investigated. These newly proposed orbits, termed Taranis orbits, are enabled by existing low-thrust propulsion technology, offering a ...
Anderson, Pamela, Macdonald, Malcolm
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Optimizing Propellant Distribution for Interorbital Transfers
MathematicsThe advent of space exploration missions, especially those aimed at establishing a sustainable presence on the Moon and beyond, necessitates the development of efficient propulsion and mission planning techniques.
J. De Curtò, I. De Zarzà
doaj +1 more source
Loosely Formation-Displaced Geostationary Orbit Optimization with Complex Hybrid Sail Propulsion
Complexity, 2018 To explore the performance of hybrid sail and overcome the congestion of geostationary orbit, this work proposes a method intended to optimize the trajectories of the spacecraft formation and extend the concept of displaced geostationary orbit by ...
Yuan Liu, Yong Hao, Weiwei Liu
doaj +1 more source
Field resonance propulsion concept [PDF]
A propulsion concept was developed based on a proposed resonance between coherent, pulsed electromagnetic wave forms, and gravitational wave forms (or space-time metrics).
Holt, A. C.
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Extension of the Molniya orbit using low-thrust propulsion [PDF]
, 2011 Extension of the standard Molniya orbit using low-thrust propulsion is presented. These newly proposed, highly elliptical orbits are enabled by existing low-thrust propulsion technology, enabling new Earth Observation science and offering a new set of ...
Anderson, Pamela, Macdonald, Malcolm
core
A novel interplanetary communications relay [PDF]
, 2010 A case study of a potential Earth-Mars interplanetary communications relay, designed to ensure continuous communications, is detailed. The relay makes use of orbits based on artificial equilibrium points via the application of continuous low thrust ...
Andersson G. +12 more
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