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  • fRe: Europe and Asia moving ahead with workable hyperloop.

    From John Larkin@21:1/5 to jeroen@nospam.please on Sun Dec 3 19:02:28 2023
    On Sun, 3 Dec 2023 23:39:23 +0100, Jeroen Belleman
    <jeroen@nospam.please> wrote:

    On 12/3/23 23:23, John Larkin wrote:
    On Sun, 3 Dec 2023 12:29:04 -0800 (PST), whit3rd <whit3rd@gmail.com>
    wrote:

    On Saturday, December 2, 2023 at 1:29:43?PM UTC-8, Phil Hobbs wrote:
    Jeroen Belleman <jer...@nospam.please> wrote:

    [about prospective hyperloop]
    Fred's link provides a little information. A capsule is said
    to weigh 5 tons and is powered by internal batteries, With 40
    passengers and their luggage we might reach about 9000 kg.
    Bringing that up to speed, 1220 km/hr, requires about 280 kWh.
    That requires roughly 1600 kg of batteries if we're allowed to
    deplete them entirely, but more likely about double that to
    improve battery lifetime and to have margin for other purposes.

    Such as slowing down again. ;)

    Completely missing the point, that the hyper loop concept uses gravity for >>> acceleration, and gravity for deceleration, and the 'kWh' value is identical
    to the potential energy of the endpoints minus that of the trajectory nadir.

    Gravity? How would that work?


    Simple, running a tunnel 12 km deep or so. It's going to cost a bit,
    but that's not a problem, now is it?

    Jeroen Belleman

    If you drill a straight tube between any two points on earth, and put
    a frictionless cart at one end, it will roll all the way to the other
    end for free. It takes 42 minutes.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From legg@21:1/5 to bill.sloman@ieee.org on Mon Dec 4 09:50:15 2023
    On Sun, 3 Dec 2023 20:10:13 -0800 (PST), Anthony William Sloman <bill.sloman@ieee.org> wrote:

    On Monday, December 4, 2023 at 2:02:46?PM UTC+11, John Larkin wrote:
    On Sun, 3 Dec 2023 23:39:23 +0100, Jeroen Belleman
    <jer...@nospam.please> wrote:

    On 12/3/23 23:23, John Larkin wrote:
    On Sun, 3 Dec 2023 12:29:04 -0800 (PST), whit3rd <whi...@gmail.com>
    wrote:

    On Saturday, December 2, 2023 at 1:29:43?PM UTC-8, Phil Hobbs wrote:
    Jeroen Belleman <jer...@nospam.please> wrote:

    [about prospective hyperloop]
    Fred's link provides a little information. A capsule is said
    to weigh 5 tons and is powered by internal batteries, With 40
    passengers and their luggage we might reach about 9000 kg.
    Bringing that up to speed, 1220 km/hr, requires about 280 kWh.
    That requires roughly 1600 kg of batteries if we're allowed to
    deplete them entirely, but more likely about double that to
    improve battery lifetime and to have margin for other purposes.

    Such as slowing down again. ;)

    Completely missing the point, that the hyper loop concept uses gravity for
    acceleration, and gravity for deceleration, and the 'kWh' value is identical
    to the potential energy of the endpoints minus that of the trajectory nadir.

    Gravity? How would that work?


    Simple, running a tunnel 12 km deep or so. It's going to cost a bit,
    but that's not a problem, now is it?

    If you drill a straight tube between any two points on earth, and put a frictionless cart at one end, it will roll all the way to the other end for free. It takes 42 minutes.

    That's not what the 1974 patent claims.

    https://patents.google.com/patent/US4148260

    A straight tube won't offer the right initial acceleration or terminal deceleration to give you 42 minutes - the patent talks about a catenary.

    How about interconnected trapeze swings, or loss-free pogo sticks.

    It's all downhill from here.

    Rl

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)