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Ballistic capture is a low energy method f … Ballistic capture is a low energy method for a spacecraft to achieve an orbit around a distant planet or moon with no fuel required to go into orbit. In the ideal case, the transfer is ballistic (requiring zero Delta-v) after launch. In the traditional alternative to ballistic capture, spacecraft would use a Hohmann transfer orbit, which requires the spacecraft to burn fuel in order to slow down at the target. A requirement for the spacecraft to carry fuel adds to its cost and complexity. To achieve ballistic capture the spacecraft is placed on a flight path ahead of the target's orbital path. The spacecraft then falls into the desired orbit, requiring only minor orbit corrections which may only need low power ion thrusters. The first paper on using ballistic capture for transfer designed for spacecraft was written in 1987. The mathematical theory that describes ballistic capture is called Weak Stability Boundary theory. Ballistic capture was first used by the Japanese spacecraft Hiten in 1991 as a method to get to the Moon. This was designed by Edward Belbruno and J. Miller. The ballistic capture transfer that performed this is an exterior ballistic capture transfer since it goes beyond the Earth-Moon distance. An interior ballistic capture transfer stays within the Earth-Moon distance. This was described in 1987 and was first used by the ESA SMART-1 spacecraft in 2004.sed by the ESA SMART-1 spacecraft in 2004.
, En astrodinàmica, la captura balística és … En astrodinàmica, la captura balística és un mètode d'inserció a una òrbita d'un planeta o d'una lluna. Una nau navegant a una velocitat orbital menor a la del cos celeste de destí és inserida a una òrbita similar a la del cos, permetent que el planeta o la lluna, al moure's cap a la nau, la capturi gravitacionalment en una òrbita al seu voltant. Aquest mètode no requereix un impuls d'inserció final. És un mètode usat en astrodinàmica de baixa energia. Aquest mètode fou usat per primera vegada el 1991 per la nau japonesa Hiten, la qual fou inserida en òrbita lunar. Es preveu que sigui:
* Més segur, ja que no hi ha cremada d'inserció crítica de temps,
* Llançable en gairebé qualsevol moment, en lloc d'haver d'esperar una finestra estreta d'oportunitats,
* Més eficient en combustible per a algunes missions. El mètode convencional és una òrbita de transferència de Hohmann, que implica una cremada d'inserció.hmann, que implica una cremada d'inserció.
, La capture balistique est une méthode perm … La capture balistique est une méthode permettant à un engin spatial de s'insérer en orbite autour d'une planète ou de la Lune sans utiliser d'ergols (dans le cas idéal) ou en utilisant très peu. Elle constitue une alternative à la méthode de transfert d'Hohman utilisée de manière traditionnelle. Son principal avantage est qu'elle permet de réduire la masse de l'engin spatial. Elle a été utilisée à plusieurs reprises par des missions spatiales lunaires.rises par des missions spatiales lunaires.
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La capture balistique est une méthode perm … La capture balistique est une méthode permettant à un engin spatial de s'insérer en orbite autour d'une planète ou de la Lune sans utiliser d'ergols (dans le cas idéal) ou en utilisant très peu. Elle constitue une alternative à la méthode de transfert d'Hohman utilisée de manière traditionnelle. Son principal avantage est qu'elle permet de réduire la masse de l'engin spatial. Elle a été utilisée à plusieurs reprises par des missions spatiales lunaires.rises par des missions spatiales lunaires.
, Ballistic capture is a low energy method f … Ballistic capture is a low energy method for a spacecraft to achieve an orbit around a distant planet or moon with no fuel required to go into orbit. In the ideal case, the transfer is ballistic (requiring zero Delta-v) after launch. In the traditional alternative to ballistic capture, spacecraft would use a Hohmann transfer orbit, which requires the spacecraft to burn fuel in order to slow down at the target. A requirement for the spacecraft to carry fuel adds to its cost and complexity.arry fuel adds to its cost and complexity.
, En astrodinàmica, la captura balística és … En astrodinàmica, la captura balística és un mètode d'inserció a una òrbita d'un planeta o d'una lluna. Una nau navegant a una velocitat orbital menor a la del cos celeste de destí és inserida a una òrbita similar a la del cos, permetent que el planeta o la lluna, al moure's cap a la nau, la capturi gravitacionalment en una òrbita al seu voltant. Aquest mètode no requereix un impuls d'inserció final. És un mètode usat en astrodinàmica de baixa energia. Aquest mètode fou usat per primera vegada el 1991 per la nau japonesa Hiten, la qual fou inserida en òrbita lunar. Es preveu que sigui:rida en òrbita lunar. Es preveu que sigui:
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Captura balística
, Capture balistique
, Ballistic capture
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