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  • The Tau Ceti traveler

    From Richard Hachel@21:1/5 to All on Tue Sep 10 15:44:14 2024
    The Tau Ceti traveler

    The Tau Ceti traveler is a relativistic problem imagined by Dr. Richard
    Hachel and which consists of the study of the journey to Tau Ceti of an astronaut evolving in accelerated mode of approximately 10m/s², in order
    to maintain his ship in a sort of artificial gravitation.
    The distance of Tau Ceti is set at twelve light years.
    The departure is from the Cape Canaveral base in Florida.
    We set:
    a=1.052ly/y²
    D=12al
    We want to know when and at what speed the spaceship will cross the Tau
    Ceti system in the Earth's frame of reference.
    We want to know at what speed Tau Ceti will cross the rocket, and at what
    time in the rocket's frame of reference.

    R.H.

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  • From Richard Hachel@21:1/5 to All on Tue Sep 10 15:55:39 2024
    The Tau Ceti traveler

    The Tau Ceti traveler is a relativistic problem imagined by Dr. Richard
    Hachel and which consists of the study of the journey to Tau Ceti of an astronaut evolving in accelerated mode of approximately 10m/s², in order
    to maintain his ship in a sort of artificial gravitation.
    The distance of Tau Ceti is set at twelve light years.
    The departure is from the Cape Canaveral base in Florida.
    We set:
    a=1.052ly/y²
    D=12al
    We want to know when and at what speed the spaceship will cross the Tau
    Ceti system in the Earth's frame of reference.
    We want to know at what speed Tau Ceti will cross the rocket, and at what
    time in the rocket's frame of reference.

    <http://nemoweb.net/jntp?cUdAZOAXeDiq9itiz1KAp6xlORU@jntp/Data.Media:1>

    R.H.

    --
    Ce message a été posté avec Nemo : <https://www.nemoweb.net/?DataID=cUdAZOAXeDiq9itiz1KAp6xlORU@jntp>

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  • From Mikko@21:1/5 to Richard Hachel on Wed Sep 11 09:57:25 2024
    On 2024-09-10 15:55:39 +0000, Richard Hachel said:

    The Tau Ceti traveler

    The Tau Ceti traveler is a relativistic problem imagined by Dr. Richard Hachel and which consists of the study of the journey to Tau Ceti of an astronaut evolving in accelerated mode of approximately 10m/s², in
    order to maintain his ship in a sort of artificial gravitation.
    The distance of Tau Ceti is set at twelve light years.
    The departure is from the Cape Canaveral base in Florida.
    We set:
    a=1.052ly/y²
    D=12al

    Do both "ly" and "al" mean 'light year? If they do, you should use the
    same symbol for both.

    You should also say what D means.

    We want to know when and at what speed the spaceship will cross the Tau
    Ceti system in the Earth's frame of reference.

    Do you mean that the astronaut is flying past tau Ceti without stopping
    there?

    --
    Mikko

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Richard Hachel@21:1/5 to All on Wed Sep 11 11:31:51 2024
    Le 11/09/2024 à 08:57, Mikko a écrit :
    On 2024-09-10 15:55:39 +0000, Richard Hachel said:

    The Tau Ceti traveler

    The Tau Ceti traveler is a relativistic problem imagined by Dr. Richard
    Hachel and which consists of the study of the journey to Tau Ceti of an
    astronaut evolving in accelerated mode of approximately 10m/s², in
    order to maintain his ship in a sort of artificial gravitation.
    The distance of Tau Ceti is set at twelve light years.
    The departure is from the Cape Canaveral base in Florida.
    We set:
    a=1.052ly/y²
    D=12al

    Do both "ly" and "al" mean 'light year? If they do, you should use the
    same symbol for both.

    Yes. Light-year is année-lumière. ly=al.

    You should also say what D means.

    D=distance (in the two language).

    We want to know when and at what speed the spaceship will cross the Tau
    Ceti system in the Earth's frame of reference.

    Do you mean that the astronaut is flying past tau Ceti without stopping there?

    Without stopping nor decelerate.

    R.H.

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