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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/7QDVRUHH5BW3UXWSWSUGVQARJLZJCTTT/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "7QDVRUHH5BW3UXWSWSUGVQARJLZJCTTT",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/7QDVRUHH5BW3UXWSWSUGVQARJLZJCTTT/",
    "sender": {
        "address": "amvm (a) skynet.be",
        "mailman_id": "340c1832ff0445bf8868c926b32e84a5",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/340c1832ff0445bf8868c926b32e84a5/emails/"
    },
    "sender_name": "Marc Vermeersch",
    "subject": "[amsat-bb] Re: Could we raise orbit thru magnetorque?",
    "date": "2007-02-20T14:20:25Z",
    "parent": null,
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/KJA2LS7GIH47357CGERFPZJKZ62EZDO6/"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hi Pedro,\n\nInteresting thought!! A few remarks around this:\n\n- AFAIK magnetorque-ing is being used to change orientation but not for\nchanging orbit. I wonder what would happen in your scenario: I kind of\nexpect the satellite to change orientation because of the impossibility of\nexactly opposing the poles.\n\n- I assume that magnetorque-ing is achieved by sending a current through a\ncoil. The force on a conductor in a magnetic field is:\n\tForce = current [A] x length [m] x magnetic field [Tesla]\nThe magnetic field of Mother Earth is about 0.00005 Tesla at the surface so\na fraction of that at satellite altitude. Generating usable force looks like\na challenge.\n\n\n\n-----Original Message-----\nFrom: [email protected] [mailto:[email protected]] On\nBehalf Of lu7abf\nSent: Monday, February 19, 2007 4:48 AM\nTo: [email protected]\nSubject: [amsat-bb] Could we raise orbit thru magnetorque?\n\nIn thinking on a future satellite project, this question was made.\n\nArgument is:  if when satellite is in the north, a north magnetic field is\napplied on z plane, will satellite raise orbit ? Same but opposite on south.\nConsidering limited energy available could this raise be significant if\napplied on all orbits ?. \n\nTks for any answer or argument.\n\nlu7abf, Pedro Converso\[email protected]\nwww.amsat.org.ar \n_______________________________________________\nSent via [email protected]. Opinions expressed are those of the author.\nNot an AMSAT-NA member? Join now to support the amateur satellite program!\nSubscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n\n",
    "attachments": []
}