Excellent and well worth the migraine itβs given me. π
Simon From: Karl Swartz via Mifnet <[email protected]> Sent: 05 June 2025 08:32 To: Mifnet <[email protected]> Cc: Karl Swartz <[email protected]> Subject: [Mifnet π 72592] Re: Heard in the Hangar #289 Rocket Lab acquisition of Geost LLC; takeaways from SpaceX, PL, LUV, UAL, JBLU, RYAAY, AAL, SNCY, Azul, FLYY, FTAI, JOBY ACHR Cheers, Simon! For flights to the surface of Sol, Iβm under the impression than wings of feathers adhered with beeswax are inadvisable. Itβs not a grate circle route and Iβve read that itβs actually a difficult problem, I suppose because itβs easy to get captured into a captive orbit unless you cancel out the initial (significant) orbital velocity so you can just fall in. Geodesic paths on the oblate spheroid that models Earth challenge my limited mathematical skills so Iβve not seriously considered the problem. Er, since adding Luna and then Mars maps to GCmap pre-2010 (my logs stumbled a bit) I have considered adding the ability to calculate paths or at least distances between points on two different bodies. On one body (Earth, Luna, Mars, and Pluto are supported, but not Sol), paths between two points work, at least according to the best parameters of the appropriate oblate spheroid that Iβve been able to find. Between bodies is obviously a MUCH more complex problem, but as an Easter egg Iβve considered offering at least distance(s). Path has too many variables but for the simplest case of Earth and Luna, you only need to consider Lunaβs apogee and perigee plus the radius of earth times the sine (or cosine? Itβs too late) of the latitude to bound the distance solution. Well, assuming you ignore orbital movement just as winds are ignored in geodesic paths. Er, the simple answer to your question, β Have you offered to work out the best great circle route there?,β would be no. :-) -- Karl On Jun 3, 2025, at 12:23 PM, srbrown via Mifnet <[email protected] <mailto:[email protected]> > wrote: Karl, Have you offered to work out the best great circle route there? Simon -------- Original message -------- From: "Karl L. Swartz via Mifnet" <[email protected] <mailto:[email protected]> > Date: 03/06/2025 07:05 (GMT+00:00) To: Mifnet <[email protected] <mailto:[email protected]> > Cc: "Karl L. Swartz" <[email protected] <mailto:[email protected]> > Subject: [Mifnet π 72565] Re: Heard in the Hangar #289 Rocket Lab acquisition of Geost LLC; takeaways from SpaceX, PL, LUV, UAL, JBLU, RYAAY, AAL, SNCY, Azul, FLYY, FTAI, JOBY ACHR Iβd be quite happy if Musk and his (former?) pal Tangerine TACO decided to attempt to be the first βmenβ to land on the surface of Sol. Seems like a well-chosen expenditure. -- Karl On Jun 2, 2025, at 9:02 PM, David Wardell via Mifnet <[email protected] <mailto:[email protected]> > wrote: I'll just observe that: * Musk's ideas as to muliplanetary whatever are irrational, based upon current and foreseeable technology. * NASA spending $1 billion on a Mars program at the expense of other projects is an ill-informed bad idea. Old Man Wardell Failed Mad Scientist David Wardell +1.757.561.0582 <tel:+1.757.561.0582> [email protected] <mailto:[email protected]> -------------------------------------------------------------------------- Revised: 20250507 You are receiving The Mifnet because you requested to join this list. The Mifnet is largely a labor of love, however the infrastructure isn't exactly cost-free. 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-------------------------------------------------------------------------- Revised: 20250507 You are receiving The Mifnet because you requested to join this list. The Mifnet is largely a labor of love, however the infrastructure isn't exactly cost-free. If you'd care to make a small contribution to the effort, please know that it would be greatly appreciated: https://wardell.us/url/mifbit All posts sent to the list should abide by these policies: 1) List members acknowledge that participation in Mifnet is a privilege--not a right. 2) Posts are always off the record, absent specific permission from the author. 3) The tone of discussions is collegial. 4) Posts are expected to be in reasonably good taste. 5) We discuss ideas and not personalities, and we don't speak ill of other Mifnet members. * The Mifnet WEB SITE is: https://www.mifnet.com/ * To UNSUBSCRIBE from this list at any time please visit: https://lists.mifnet.com/ OR: SEND THIS MESSAGE via email: [email protected]?subject=leave * Send Mifnet mailing list POSTS/SUBMISSIONS to: [email protected] * You may reach the person managing The Mifnet at: [email protected] * Please consider the DIGEST version of The Mifnet, which consolidates all list traffic into 1-3 messages daily. See instructions at: https://lists.mifnet.com/ * Manage your personal Mifnet SUBSCRIPTION at: https://lists.mifnet.com/ * For a list of all available Mifnet commands, SEND THIS MESSAGE via email: [email protected]?subject=help * View The Mifnet LIST POLICIES and PRIVACY POLICY at: https://mifnet.com/index.php/policies * View instructions for Mifnet DELIVERY PROBLEMS at: https://mifnet.com/index.php/delivery-problems * View The Mifnet LIST ARCHIVE at: https://lists.mifnet.com/hyperkitty/list/[email protected]/
