{"guid":"c4b8c3d3-6a28-4137-a532-e61a742b9e64","title":"Thrust is not an Option: How to get to Mars really slow","subtitle":null,"slug":"36c3-10918-thrust_is_not_an_option_how_to_get_to_mars_really_slow","link":"https://fahrplan.events.ccc.de/congress/2019/Fahrplan/events/10918.html","description":"\u003cp\u003eIn this talk we will see how chaos can be used to find very peculiar trajectories for space crafts within the Solar System. To understand this, we will also have a short look at the basics of orbital mechanics as well as three-body problems.\u003c/p\u003e \n\n\u003cp\u003eWhen traveling to Mars in a space craft, you want to find a compromise between flight duration and fuel consumption. One common trajectory for achieving this is the so-called Hohmann transfer which takes about 9 months from Earth and needs two maneuvers, both of which are accelerations!\u003c/p\u003e\n\n\u003cp\u003eUsually, when modeling movement of space crafts, one uses the Kepler model of two massive bodies attracting each other via gravitation. In case you have more time available for a space journey, however, you might consider a third body in your calculations. This introduces a very chaotic behavior, which you can use in turn to find very special trajectories that allow you to get to various places spending a lot less fuel. Unfortunately this will be much slower.\u003c/p\u003e\n\n\u003cp\u003eThese special trajectories are called low-energy transfers and form a part of the so-called interplanetary transport network. There have been a handful of missions already using these trajectories, e.g. JAXA’s Hiten probe in 1990 and ESA’s BepiColombo which is en route to Mercury right now.\u003c/p\u003e\n\n\u003cp\u003eIn this talk we will have a short introduction to the ever-surprising world of orbital mechanics followed by a discussion of the three-body problem including Lagrangian points. We will then see what the so-called weak stability boundary is and how chaos can help us understand why these strange trajectories exist. No math knowledge required!\u003c/p\u003e","original_language":"eng","persons":["sven"],"tags":["36c3","10918","2019","Science","Main"],"view_count":1699,"promoted":false,"date":"2019-12-29T17:30:00.000+01:00","release_date":"2019-12-29T01:00:00.000+01:00","updated_at":"2025-02-24T14:00:06.435+01:00","length":3605,"duration":3605,"thumb_url":"https://static.media.ccc.de/media/congress/2019/10918-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/2019/10918-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/2019/10918-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/2019/10918-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/36c3-10918-thrust_is_not_an_option_how_to_get_to_mars_really_slow","url":"https://api.media.ccc.de/public/events/c4b8c3d3-6a28-4137-a532-e61a742b9e64","conference_title":"36C3: Resource Exhaustion","conference_url":"https://api.media.ccc.de/public/conferences/36c3","related":[],"recordings":[{"size":null,"length":null,"mime_type":"application/x-subrip","language":"eng","filename":"36c3-10918-eng-deu-fra-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow.en.srt","state":"complete","folder":"","high_quality":true,"width":null,"height":null,"updated_at":"2021-02-21T19:47:34.516+01:00","recording_url":"https://cdn.media.ccc.de/congress/2019/36c3-10918-eng-deu-fra-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow.en.srt","url":"https://api.media.ccc.de/public/recordings/50371","event_url":"https://api.media.ccc.de/public/events/c4b8c3d3-6a28-4137-a532-e61a742b9e64","conference_url":"https://api.media.ccc.de/public/conferences/36c3"},{"size":622,"length":3605,"mime_type":"video/webm","language":"eng-deu-fra","filename":"36c3-10918-eng-deu-fra-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow_webm-hd.webm","state":"new","folder":"webm-hd","high_quality":true,"width":1920,"height":1080,"updated_at":"2019-12-30T00:42:40.140+01:00","recording_url":"https://cdn.media.ccc.de/congress/2019/webm-hd/36c3-10918-eng-deu-fra-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow_webm-hd.webm","url":"https://api.media.ccc.de/public/recordings/43436","event_url":"https://api.media.ccc.de/public/events/c4b8c3d3-6a28-4137-a532-e61a742b9e64","conference_url":"https://api.media.ccc.de/public/conferences/36c3"},{"size":271,"length":3605,"mime_type":"video/webm","language":"eng-deu-fra","filename":"36c3-10918-eng-deu-fra-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow_webm-sd.webm","state":"new","folder":"webm-sd","high_quality":false,"width":720,"height":576,"updated_at":"2019-12-29T23:05:00.548+01:00","recording_url":"https://cdn.media.ccc.de/congress/2019/webm-sd/36c3-10918-eng-deu-fra-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow_webm-sd.webm","url":"https://api.media.ccc.de/public/recordings/43394","event_url":"https://api.media.ccc.de/public/events/c4b8c3d3-6a28-4137-a532-e61a742b9e64","conference_url":"https://api.media.ccc.de/public/conferences/36c3"},{"size":33,"length":3587,"mime_type":"audio/opus","language":"eng","filename":"36c3-10918-eng-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow_opus.opus","state":"new","folder":"opus","high_quality":false,"width":0,"height":0,"updated_at":"2019-12-29T23:00:41.951+01:00","recording_url":"https://cdn.media.ccc.de/congress/2019/opus/36c3-10918-eng-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow_opus.opus","url":"https://api.media.ccc.de/public/recordings/43388","event_url":"https://api.media.ccc.de/public/events/c4b8c3d3-6a28-4137-a532-e61a742b9e64","conference_url":"https://api.media.ccc.de/public/conferences/36c3"},{"size":54,"length":3588,"mime_type":"audio/mpeg","language":"eng","filename":"36c3-10918-eng-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow_mp3.mp3","state":"new","folder":"mp3","high_quality":false,"width":0,"height":0,"updated_at":"2019-12-29T22:59:36.948+01:00","recording_url":"https://cdn.media.ccc.de/congress/2019/mp3/36c3-10918-eng-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow_mp3.mp3","url":"https://api.media.ccc.de/public/recordings/43386","event_url":"https://api.media.ccc.de/public/events/c4b8c3d3-6a28-4137-a532-e61a742b9e64","conference_url":"https://api.media.ccc.de/public/conferences/36c3"},{"size":235,"length":3605,"mime_type":"video/mp4","language":"eng-deu-fra","filename":"36c3-10918-eng-deu-fra-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow_sd.mp4","state":"new","folder":"h264-sd","high_quality":false,"width":720,"height":576,"updated_at":"2019-12-29T22:59:06.049+01:00","recording_url":"https://cdn.media.ccc.de/congress/2019/h264-sd/36c3-10918-eng-deu-fra-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow_sd.mp4","url":"https://api.media.ccc.de/public/recordings/43384","event_url":"https://api.media.ccc.de/public/events/c4b8c3d3-6a28-4137-a532-e61a742b9e64","conference_url":"https://api.media.ccc.de/public/conferences/36c3"},{"size":480,"length":3605,"mime_type":"video/mp4","language":"eng-deu-fra","filename":"36c3-10918-eng-deu-fra-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow_hd.mp4","state":"new","folder":"h264-hd","high_quality":true,"width":1920,"height":1080,"updated_at":"2019-12-29T21:14:13.141+01:00","recording_url":"https://cdn.media.ccc.de/congress/2019/h264-hd/36c3-10918-eng-deu-fra-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow_hd.mp4","url":"https://api.media.ccc.de/public/recordings/43360","event_url":"https://api.media.ccc.de/public/events/c4b8c3d3-6a28-4137-a532-e61a742b9e64","conference_url":"https://api.media.ccc.de/public/conferences/36c3"},{"size":276,"length":3605,"mime_type":"video/mp4","language":"fra","filename":"36c3-10918-fra-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow.mp4","state":"new","folder":"h264-hd","high_quality":true,"width":1920,"height":1080,"updated_at":"2019-12-29T21:13:20.560+01:00","recording_url":"https://cdn.media.ccc.de/congress/2019/h264-hd/36c3-10918-fra-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow.mp4","url":"https://api.media.ccc.de/public/recordings/43359","event_url":"https://api.media.ccc.de/public/events/c4b8c3d3-6a28-4137-a532-e61a742b9e64","conference_url":"https://api.media.ccc.de/public/conferences/36c3"},{"size":276,"length":3605,"mime_type":"video/mp4","language":"deu","filename":"36c3-10918-deu-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow.mp4","state":"new","folder":"h264-hd","high_quality":true,"width":1920,"height":1080,"updated_at":"2019-12-29T21:12:19.352+01:00","recording_url":"https://cdn.media.ccc.de/congress/2019/h264-hd/36c3-10918-deu-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow.mp4","url":"https://api.media.ccc.de/public/recordings/43358","event_url":"https://api.media.ccc.de/public/events/c4b8c3d3-6a28-4137-a532-e61a742b9e64","conference_url":"https://api.media.ccc.de/public/conferences/36c3"},{"size":276,"length":3605,"mime_type":"video/mp4","language":"eng","filename":"36c3-10918-eng-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow.mp4","state":"new","folder":"h264-hd","high_quality":true,"width":1920,"height":1080,"updated_at":"2019-12-29T21:11:16.026+01:00","recording_url":"https://cdn.media.ccc.de/congress/2019/h264-hd/36c3-10918-eng-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow.mp4","url":"https://api.media.ccc.de/public/recordings/43357","event_url":"https://api.media.ccc.de/public/events/c4b8c3d3-6a28-4137-a532-e61a742b9e64","conference_url":"https://api.media.ccc.de/public/conferences/36c3"},{"size":260,"length":3605,"mime_type":"video/mp4","language":"eng-deu-fra","filename":"36c3-10918-eng-deu-fra-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow_hd-slides.mp4","state":"new","folder":"slides-h264-hd","high_quality":true,"width":1920,"height":1080,"updated_at":"2019-12-29T21:08:25.786+01:00","recording_url":"https://cdn.media.ccc.de/congress/2019/slides-h264-hd/36c3-10918-eng-deu-fra-Thrust_is_not_an_Option_How_to_get_to_Mars_really_slow_hd-slides.mp4","url":"https://api.media.ccc.de/public/recordings/43354","event_url":"https://api.media.ccc.de/public/events/c4b8c3d3-6a28-4137-a532-e61a742b9e64","conference_url":"https://api.media.ccc.de/public/conferences/36c3"}]}