نتایج جستجو برای: impulsive thrusting maneuver
تعداد نتایج: 18099 فیلتر نتایج به سال:
In the present study, inter-male interaction of the domesticated house musk shrew was observed in detail under laboratory conditions. In most cases, during inter-male interaction, male house musk shrews exhibited a sequence of behavior items including tail-wagging, following, mounting and thrusting. In the minority of cases, males did not progress beyond following. Offensive behavior was not su...
Recent advances in computing power and speed allow designers to simulate thousands, if not millions, of design alternatives more cheaply and quickly than ever before. These advancements provide new opportunities to revolutionize trade space exploration for complex dynamic systems in the aerospace industry, among others. In this paper, we demonstrate our multi-dimensional data visualization soft...
A method to compute optimal collision avoidance maneuvers for short-term encounters is presented. The are modeled as multiple-impulses handle impulsive cases and approximate finite burn arcs associated either with short alert times or the use of low-thrust propulsion. maneuver design formulated a sequence convex optimization problems solved in polynomial time by state-of-the-art primal-dual int...
This paper presents the initial work toward firstprinciples noise prediction for maneuvering rotors. Both the aeromechanical and acoustics aspects of the maneuver noise problem are discussed. The comprehensive analysis code, CAMRAD 2, was utilized to predict the time-dependent aircraft position and attitude, along with the rotor blade airloads and motion. The major focus of this effort was the ...
In this paper, a robotic fish with a caudal fin with vertical phase differences is studied, especially focusing on the energy consumption. Energies for thrusting a conventional robotic fish and one with caudal fin with vertical phase differences are obtained and compared each other. It is shown that a robotic fish with a caudal fin with vertical phase differences can save more energy, which imp...
Abstract Aiming at the constraint due to micro satellite orbital maneuverability and relative navigation, a multi-segment multi-pulse maneuver control method is proposed for approaching target satellite. Convert along-track trajectory into an impulsive problem with fixed time distance. With distance from origin destination as optimization objectives, time-distance optimal solution set generated...
conclusions continuous portal triade clamping (the pringle maneuver) during liver ischemia (30 and 45 minutes) in rabbits resulted in no ischemic change. increasing time of clamping to 30 minutes was safe in intermittent pringle maneuver. materials and methods in an experimental study, 20 new-zealand white rabbits were selected. in laparotomy, a blunt dissector was passed through the foramen of...
OBJECTIVE Humans can acquire a wide variety of motor skills using sensory feedback pertaining to discrepancies between intended and actual movements. Acupuncture needle manipulation involves sophisticated hand movements and represents a fundamental skill for acupuncturists. We investigated whether untrained students could improve their motor performance during acupuncture needle manipulation us...
[1] A regional study starting from detailed geological mapping has been carried out in the Malpica‐Tui Complex of Galicia in NW Spain. The complex is formed by two units representing pieces of the external edge of Gondwana, subducted and exhumed during the Variscan collision. The study shows that synsubduction and early synexhumation structures in continental subduction channels tends to be obs...
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