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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/KTYJAQOHQTWVQA3AGUC6FJWAHKSKYJAW/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "000a01c72050$375442d0$26517646@djxe18",
    "message_id_hash": "KTYJAQOHQTWVQA3AGUC6FJWAHKSKYJAW",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/KTYJAQOHQTWVQA3AGUC6FJWAHKSKYJAW/",
    "sender": {
        "address": "rjansson (a) cfl.rr.com",
        "mailman_id": "9b211bcd8a0642788e6dc055f3930699",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/9b211bcd8a0642788e6dc055f3930699/emails/"
    },
    "sender_name": "Dick Jansson-rr",
    "subject": "[eagle]  FW: Heat Sink Parts",
    "date": "2006-12-15T13:52:09Z",
    "parent": null,
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "-----Original Message-----\nFrom: Albert D. Helfrick [mailto:[email protected]] \nSent: Friday, 15 December, 2006 1037\nTo: [email protected]\nSubject: Re: Heat Sink Parts\n\n\nGoood Morning Dick,\n\nJust let us know what else we can do to help; both electrically and\nmechanically.\n\nAl\n\n-----Original Message-----\nFrom: \"Dick Jansson-rr\" <[email protected]>\nTo: \"AMSAT Eagle \" <[email protected]>\nDate: Fri, 15 Dec 2006 00:35:31 -0000\nSubject: Heat Sink Parts\n\nGreetings:\n \nAMSAT's Eagle Project has just today received a sample collection (4+) of\nE05 01 Heat Sinks fastidiously machined by our friends at Embry Riddle\nAeronautic University, Daytona Beach, Florida. This is the culmination of\ndiscussions started over a year ago. These heat sinks are designed to be\nriveted into Eagle's high-power electronic modules so as to enable the\ndissipation from the power devices in those modules. Such a heat sink will\nhelp couple the dissipated power to the spacecraft for its ultimate\nrejection to the space heat sink (temperature: 4K).\n \nWe are very much indebted to ERAU and Dr. Al Helfirck, K2BLA, a very\nlong-time operator, for their participation in the Eagle Project.\n \nWhat makes these heat sinks very special is that they are machined from a\nhigh thermal conductivity, 99% pure, aluminum. This alloy is 33% higher\nconductivity than alloy aluminum, and as such it is quite soft and difficult\nto machine. In addition, the surface finish of these parts is also demanding\nand ERAU has presented us with a superb product. The need for this kind of\nfinish is, again, a thermal issue.\n \nWhen experimenters are presented with these heat sink modules to work with\ntheir surfaces will be protected by a plastic film, of which we have a\nquantity. Such a protective film will be used on most all thermal conductive\nand radiative surfaces of importance, as they all are of delicate and soft\nalloys.\n \nA tip of the hat to Al and his gang.\n \nDick Jansson\n---------------------------\n <mailto:[email protected]> [email protected]\n---------------------------\n\n \n\n\n\n\n\n\n",
    "attachments": []
}