Flexible Propellers
نویسندگان
چکیده
منابع مشابه
Stochastic Flights of Propellers
Kilometer-sized moonlets in Saturn’s A ring create S-shaped wakes called “propellers” in surrounding material. The Cassini spacecraft has tracked the motions of propellers for several years and finds that they deviate from Keplerian orbits having constant semimajor axes. The inferred orbital migration is known to switch sign. We show using a statistical test that the time series of orbital long...
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A coupled and geometrically nonlinear structural/flight dynamics model with unsteady aerodynamics model is developed for a large scale highly flexible solar-powered UAV. Based on the model, the UAV is trimmed with all the all-wing span elevons deflecting conformably. For the longitudinal control, the equation of motion in trimming condition is linearized firstly, then the dynamic model of elevo...
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متن کاملThe Population of Propellers in Saturn’s a Ring
We present an extensive data set of ∼150 localized features from Cassini images of Saturn’s A ring, a third of which are demonstrated to be persistent by their appearance in multiple images, and half of which are resolved well enough to reveal a characteristic “propeller” shape. We interpret these features as the signatures of small moonlets embedded within the ring, with diameters between 40 a...
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ژورنال
عنوان ژورنال: Royal United Services Institution. Journal
سال: 1859
ISSN: 0035-9289
DOI: 10.1080/03071845909422984