Results 21 to 30 of about 410,560 (293)
AerospaceThe reachable set of controlled dynamical systems is the set of all reachable states from an initial condition over a certain time horizon, subject to operational constraints and exogenous disturbances.
Sean Bowerfind, Ehsan Taheri
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Continuous thrust tangential or perpendicular to the flight direction on a given transfer trajectory in planar Circular Restricted 3-Body Problem [PDF]
INCAS Bulletin, 2011 This paper presents a systematic study for analytical determination of thrust acceleration magnitude on a given trajectory for a case where the thrust is tangential or perpendicular to the flight direction.
Mircea DUMITRACHE
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Preliminary design of debris removal missions by means of simplified models for low-thrust, many-revolution transfers [PDF]
, 2012 This paper presents a novel approach for the preliminary design of Low-Thrust (LT), many-revolution transfers. The main feature of the novel approach is a considerable reduction in the control parameters and a consequent gain in computational speed. Each
Vasile, Massimiliano, Zuiani, Federico
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Design and Simulation of Fuel Injector of a 10N Monopropellant Hydrazine Thruster [PDF]
فصلنامه علوم و فناوری فضایی, 2018 Monopropellant thruster of atitude control system is a requirement for the development and functionalization of satellites in space, which have expensive and high-tech technology.
Hadiseh Karimaei
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Nihon Kikai Gakkai ronbunshu, 2015 As low-thrust propulsion technology becomes increasingly popular, orbital estimation for low-thrust spacecraft may become an area of increasing interest. More frequent use of low-thrust propulsion to place satellites in orbit gives more opportunities for
Naoki DATE, Mai BANDO, Shinji HOKAMOTO
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Characteristic of Sector Tilting Pad Thrust Bearing with Surface Support
Journal of Harbin University of Science and Technology, 2020 In surface center supported thrust bearing as the research object, get the main lubrication parameters of surface supported thrust bearing by finite element analysis.
LI Yonghai +6 more
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Low-thrust rocket trajectories [PDF]
, 1986 The development of low-thrust propulsion systems to complement chemical propulsion systems will greatly enhance the evolution of future space programs. Two advantages of low-thrust rockets are stressed: first, in a strong gravitational field, such as occurs near the Earth, freighter missions with low-thrust engines require one-tenth as much propellant ...
openaire +4 more sources
Low thrust monopropellant engine [PDF]
, 1981 The engine has a conventional body and nozzle configuration. The monopropellant fuel is fed into the thruster with dual injection tubes via an injector shell with dual spray jets. The spray jets are positioned generally opposed to each other.
Kuenzly, J. D.
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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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Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source