• Starship IFT-4

    From Alain Fournier@alain245@videotron.ca to sci.space.policy on Tue Mar 19 14:13:09 2024
    From Newsgroup: sci.space.policy

    Here is an interesting article about future Starship flights.

    spacenews.com/spacex-planning-rapid-turnaround-for-next-starship-flight/

    "SpaceX hopes to conduct the next launch of its Starship vehicle as soon
    as early May"

    And

    "However, Coleman said the agency wants to move to a process where the
    license is valid for rCLportfolio of launchesrCY rather than individual
    ones. That is particularly important, he added, because SpaceX is
    planning six to nine more Starship launches this year."

    That could accelerate Starship development.


    Alain Fournier
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  • From Snidely@snidely.too@gmail.com to sci.space.policy on Tue Mar 19 20:14:09 2024
    From Newsgroup: sci.space.policy

    Alain Fournier pounded on thar keyboard to tell us
    Here is an interesting article about future Starship flights.

    spacenews.com/spacex-planning-rapid-turnaround-for-next-starship-flight/

    "SpaceX hopes to conduct the next launch of its Starship vehicle as soon as early May"

    And

    "However, Coleman said the agency wants to move to a process where the license is valid for rCLportfolio of launchesrCY rather than individual ones.
    That is particularly important, he added, because SpaceX is planning six to nine more Starship launches this year."

    That could accelerate Starship development.


    Alain Fournier

    Intriguing. Thanks for the link.

    /dps
    --
    https://xkcd.com/2704
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  • From The Running Man@runningman@writeable.com to sci.space.policy on Wed Mar 20 06:58:37 2024
    From Newsgroup: sci.space.policy

    On 19/03/2024 14:13 Alain Fournier <alain245@videotron.ca> wrote:
    Here is an interesting article about future Starship flights.

    spacenews.com/spacex-planning-rapid-turnaround-for-next-starship-flight/

    "SpaceX hopes to conduct the next launch of its Starship vehicle as soon
    as early May"

    And

    "However, Coleman said the agency wants to move to a process where the license is valid for ?portfolio of launches? rather than individual
    ones. That is particularly important, he added, because SpaceX is
    planning six to nine more Starship launches this year."

    That could accelerate Starship development.


    Alain Fournier

    First they need to identify the issues they had on the last flight and rectify them. That alone could cost two months or more and I assume the FAA license will take at least that amount of time.

    IMHO he roll control issue shouldn't have been there in any case.
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  • From Alain Fournier@alain245@videotron.ca to sci.space.policy on Wed Mar 20 10:14:09 2024
    From Newsgroup: sci.space.policy

    On 2024-03-20 2:58 a.m., The Running Man wrote:
    On 19/03/2024 14:13 Alain Fournier <alain245@videotron.ca> wrote:
    Here is an interesting article about future Starship flights.

    spacenews.com/spacex-planning-rapid-turnaround-for-next-starship-flight/

    "SpaceX hopes to conduct the next launch of its Starship vehicle as soon
    as early May"

    And

    "However, Coleman said the agency wants to move to a process where the
    license is valid for ?portfolio of launches? rather than individual
    ones. That is particularly important, he added, because SpaceX is
    planning six to nine more Starship launches this year."

    That could accelerate Starship development.


    Alain Fournier

    First they need to identify the issues they had on the last flight and rectify them. That alone could cost two months or more and I assume the FAA license will take at least that amount of time.

    The FAA is concerned about whether the launch is safe for the public.
    Not about whether the rocket will be reusable. The boosters can impact
    the ocean at high speed, that isn't a problem for the FAA, only for
    SpaceX. The ship disintegrating over the Indian ocean is only slightly
    more problematic. SpaceX only has to show that the next launch is not
    likely to be worse than the previous one to get FAA approval.

    That being said. Of course SpaceX would want to figure out the problems
    and rectify them before the next launch. Gwynne Shotwell seems to think
    that it can be done for a May launch. She likely knows better than you
    and I.


    Alain Fournier

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  • From Alain Fournier@alain245@videotron.ca to sci.space.policy on Wed Mar 20 13:21:58 2024
    From Newsgroup: sci.space.policy

    On 2024-03-20 10:14 a.m., Alain Fournier wrote:
    On 2024-03-20 2:58 a.m., The Running Man wrote:
    On 19/03/2024 14:13 Alain Fournier <alain245@videotron.ca> wrote:
    Here is an interesting article about future Starship flights.

    spacenews.com/spacex-planning-rapid-turnaround-for-next-starship-flight/ >>>
    "SpaceX hopes to conduct the next launch of its Starship vehicle as soon >>> as early May"

    And

    "However, Coleman said the agency wants to move to a process where the
    license is valid for ?portfolio of launches? rather than individual
    ones. That is particularly important, he added, because SpaceX is
    planning six to nine more Starship launches this year."

    That could accelerate Starship development.


    Alain Fournier

    First they need to identify the issues they had on the last flight and
    rectify them. That alone could cost two months or more and I assume
    the FAA license will take at least that amount of time.

    The FAA is concerned about whether the launch is safe for the public.
    Not about whether the rocket will be reusable. The boosters can impact
    the ocean at high speed, that isn't a problem for the FAA, only for
    SpaceX. The ship disintegrating over the Indian ocean is only slightly
    more problematic. SpaceX only has to show that the next launch is not
    likely to be worse than the previous one to get FAA approval.

    That being said. Of course SpaceX would want to figure out the problems
    and rectify them before the next launch. Gwynne Shotwell seems to think
    that it can be done for a May launch. She likely knows better than you
    and I.


    Alain Fournier

    Note that the above mentioned early May for IFT-4 was suggested by
    Gwynne Shotwell. Shotwell time is not like Elon time, it matches much
    more closely normal time.


    Alain Fournier

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  • From Snidely@snidely.too@gmail.com to sci.space.policy on Sat Apr 6 03:22:40 2024
    From Newsgroup: sci.space.policy

    Alain Fournier pounded on thar keyboard to tell us
    Here is an interesting article about future Starship flights.

    spacenews.com/spacex-planning-rapid-turnaround-for-next-starship-flight/

    "SpaceX hopes to conduct the next launch of its Starship vehicle as soon as early May"

    And

    "However, Coleman said the agency wants to move to a process where the license is valid for rCLportfolio of launchesrCY rather than individual ones.
    That is particularly important, he added, because SpaceX is planning six to nine more Starship launches this year."

    That could accelerate Starship development.


    Alain Fournier

    Booster 11 static fired on April 5th. Appeared to be 33 engines for a
    full duration of 6-8 seconds.

    /dps
    --
    https://xkcd.com/2704
    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From The Running Man@runningman@writeable.com to sci.space.policy on Sun Apr 7 11:04:26 2024
    From Newsgroup: sci.space.policy

    On 06/04/2024 03:22 Snidely <snidely.too@gmail.com> wrote:
    Alain Fournier pounded on thar keyboard to tell us
    Here is an interesting article about future Starship flights.

    spacenews.com/spacex-planning-rapid-turnaround-for-next-starship-flight/

    "SpaceX hopes to conduct the next launch of its Starship vehicle as soon as >> early May"

    And

    "However, Coleman said the agency wants to move to a process where the
    license is valid for ?portfolio of launches? rather than individual ones.
    That is particularly important, he added, because SpaceX is planning six to >> nine more Starship launches this year."

    That could accelerate Starship development.


    Alain Fournier

    Booster 11 static fired on April 5th. Appeared to be 33 engines for a
    full duration of 6-8 seconds.

    /dps

    --
    https://xkcd.com/2704

    Elon wants to attempt a catching of the Super Heavy on the fifth attempt. He's really pushing things now since NASA is breathing up his neck,

    <https://spacenews.com/musk-outlines-plans-to-increase-starship-launch-rate-and-performance/>

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  • From Alain Fournier@alain245@videotron.ca to sci.space.policy on Sun Apr 7 09:54:38 2024
    From Newsgroup: sci.space.policy

    On 2024-04-07 7:04 a.m., The Running Man wrote:
    On 06/04/2024 03:22 Snidely <snidely.too@gmail.com> wrote:
    Alain Fournier pounded on thar keyboard to tell us
    Here is an interesting article about future Starship flights.

    spacenews.com/spacex-planning-rapid-turnaround-for-next-starship-flight/ >>>
    "SpaceX hopes to conduct the next launch of its Starship vehicle as soon as >>> early May"

    And

    "However, Coleman said the agency wants to move to a process where the
    license is valid for ?portfolio of launches? rather than individual ones. >>> That is particularly important, he added, because SpaceX is planning six to >>> nine more Starship launches this year."

    That could accelerate Starship development.


    Alain Fournier

    Booster 11 static fired on April 5th. Appeared to be 33 engines for a
    full duration of 6-8 seconds.

    /dps

    --
    https://xkcd.com/2704

    Elon wants to attempt a catching of the Super Heavy on the fifth attempt. He's really pushing things now since NASA is breathing up his neck,

    <https://spacenews.com/musk-outlines-plans-to-increase-starship-launch-rate-and-performance/>

    Thanks for the link. What Musk said is that he wants to attempt catching
    Super Heavy on the first flight after it has splashed down in a
    controlled manner at the right spot. He hopes this successful splash
    down will be on the next flight, therefore, as you said, on fifth flight
    he would attempt to catch Super Heavy.

    Note that catching Super Heavy is not important for NASA. It only serves
    to bring down costs, therefore increasing profits for SpaceX.

    For those interested, in the link provided by The Running Man, Musk
    talks a lot about becoming a multi-planet civilisation and eventually multi-star system civilisation.


    Alain Fournier

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  • From The Running Man@runningman@writeable.com to sci.space.policy on Sun Apr 7 17:35:07 2024
    From Newsgroup: sci.space.policy

    On 07/04/2024 09:54 Alain Fournier <alain245@videotron.ca> wrote:
    On 2024-04-07 7:04 a.m., The Running Man wrote:
    On 06/04/2024 03:22 Snidely <snidely.too@gmail.com> wrote:
    Alain Fournier pounded on thar keyboard to tell us
    Here is an interesting article about future Starship flights.

    spacenews.com/spacex-planning-rapid-turnaround-for-next-starship-flight/ >>>>
    "SpaceX hopes to conduct the next launch of its Starship vehicle as soon as
    early May"

    And

    "However, Coleman said the agency wants to move to a process where the >>>> license is valid for ?portfolio of launches? rather than individual ones. >>>> That is particularly important, he added, because SpaceX is planning six to
    nine more Starship launches this year."

    That could accelerate Starship development.


    Alain Fournier

    Booster 11 static fired on April 5th. Appeared to be 33 engines for a
    full duration of 6-8 seconds.

    /dps

    --
    https://xkcd.com/2704

    Elon wants to attempt a catching of the Super Heavy on the fifth attempt. He's really pushing things now since NASA is breathing up his neck,

    <https://spacenews.com/musk-outlines-plans-to-increase-starship-launch-rate-and-performance/>

    Thanks for the link. What Musk said is that he wants to attempt catching Super Heavy on the first flight after it has splashed down in a
    controlled manner at the right spot. He hopes this successful splash
    down will be on the next flight, therefore, as you said, on fifth flight
    he would attempt to catch Super Heavy.

    Note that catching Super Heavy is not important for NASA. It only serves
    to bring down costs, therefore increasing profits for SpaceX.

    For those interested, in the link provided by The Running Man, Musk
    talks a lot about becoming a multi-planet civilisation and eventually multi-star system civilisation.


    Alain Fournier


    To me the catching of the Super Heavy could be a do or die proposition. If it fails SpaceX could be forced to rebuild the launch tower. And that could take months.

    I didn't know he'd suggested doing this after the first successful suborbital flight. Seems risky to me.

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  • From Alain Fournier@alain245@videotron.ca to sci.space.policy on Sun Apr 7 13:54:57 2024
    From Newsgroup: sci.space.policy

    On 2024-04-07 1:35 p.m., The Running Man wrote:

    To me the catching of the Super Heavy could be a do or die proposition. If it fails SpaceX could be forced to rebuild the launch tower. And that could take months.

    I didn't know he'd suggested doing this after the first successful suborbital flight. Seems risky to me.


    Yes it is risky. That's why SpaceX will wait until after they have hit
    the ocean in a precise and controlled manner before risking a launch tower.

    SpaceX plans on having several launch towers. Two in Boca Chica Texas,
    two at Cape Canaveral, and later some on sea platforms. I suspect this
    is because they want to be ready when an accident will happen.


    Alain Fournier

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  • From Niklas Holsti@niklas.holsti@tidorum.invalid to sci.space.policy on Sun Apr 7 22:04:41 2024
    From Newsgroup: sci.space.policy

    On 2024-04-07 20:35, The Running Man wrote:
    On 07/04/2024 09:54 Alain Fournier <alain245@videotron.ca> wrote:
    On 2024-04-07 7:04 a.m., The Running Man wrote:

    Elon wants to attempt a catching of the Super Heavy on the fifth
    attempt. He's really pushing things now since NASA is breathing
    up his neck,

    <https://spacenews.com/musk-outlines-plans-to-increase-starship-launch-rate-and-performance/>

    Thanks for the link. What Musk said is that he wants to attempt
    catching Super Heavy on the first flight after it has splashed down
    in a controlled manner at the right spot. He hopes this successful
    splash down will be on the next flight, therefore, as you said, on
    fifth flight he would attempt to catch Super Heavy.

    Note that catching Super Heavy is not important for NASA. It only
    serves to bring down costs, therefore increasing profits for
    SpaceX.

    To me the catching of the Super Heavy could be a do or die
    proposition. If it fails SpaceX could be forced to rebuild the
    launch tower. And that could take months.

    The returning Super Heavy is mostly an empty shell, much lighter than
    the propellant-filled launch stack, which the launch tower and launch
    stand are designed to lift and support. It seems to me that the damage
    that could be done by a botched catch is limited and not too difficult
    to repair.

    Perhaps the worst case would be a crash on the propellant farm with
    perhaps also a methane-oxygen explosion.
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  • From Snidely@snidely.too@gmail.com to sci.space.policy on Sun Apr 7 17:02:01 2024
    From Newsgroup: sci.space.policy

    Niklas Holsti suggested that ...
    On 2024-04-07 20:35, The Running Man wrote:
    On 07/04/2024 09:54 Alain Fournier <alain245@videotron.ca> wrote:
    On 2024-04-07 7:04 a.m., The Running Man wrote:

    Elon wants to attempt a catching of the Super Heavy on the fifth
    attempt. He's really pushing things now since NASA is breathing
    up his neck,

    <https://spacenews.com/musk-outlines-plans-to-increase-starship-launch-rate-and-performance/>

    Thanks for the link. What Musk said is that he wants to attempt
    catching Super Heavy on the first flight after it has splashed down
    in a controlled manner at the right spot. He hopes this successful splash >>> down will be on the next flight, therefore, as you said, on fifth flight >>> he would attempt to catch Super Heavy.

    Note that catching Super Heavy is not important for NASA. It only serves >>> to bring down costs, therefore increasing profits for SpaceX.

    To me the catching of the Super Heavy could be a do or die proposition. If >> it fails SpaceX could be forced to rebuild the launch tower. And that
    could take months.

    The returning Super Heavy is mostly an empty shell, much lighter than the propellant-filled launch stack, which the launch tower and launch stand are designed to lift and support. It seems to me that the damage that could be done by a botched catch is limited and not too difficult to repair.

    Perhaps the worst case would be a crash on the propellant farm with perhaps also a methane-oxygen explosion.

    Compare the size of a drone ship to the area around the launch pad.
    Also note that Falcon 9 landings don't target the drone ship until
    after a successful relight. There is plenty of sea near the launch
    pad.

    The soft water landings will confirm that Booster's guidance works as expected. We already have seen Ships hit the mark, even though from a
    low altitude. If a successful reentry has the ship in the right place
    for the landing burn, than catch should be a piece of cake ... remember Booster and Ship have some hover time, unlike the F9.

    /dps
    --
    "First thing in the morning, before I have coffee, I read the obits, If
    I'm not in it, I'll have breakfast." -- Carl Reiner, to CBS News in
    2015.
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  • From Snidely@snidely.too@gmail.com to sci.space.policy on Tue Apr 9 10:51:04 2024
    From Newsgroup: sci.space.policy

    Snidely explained on 4/7/2024 :
    Niklas Holsti suggested that ...
    On 2024-04-07 20:35, The Running Man wrote:
    On 07/04/2024 09:54 Alain Fournier <alain245@videotron.ca> wrote:
    On 2024-04-07 7:04 a.m., The Running Man wrote:

    Elon wants to attempt a catching of the Super Heavy on the fifth
    attempt. He's really pushing things now since NASA is breathing
    up his neck,

    <https://spacenews.com/musk-outlines-plans-to-increase-starship-launch-rate-and-performance/>

    Thanks for the link. What Musk said is that he wants to attempt
    catching Super Heavy on the first flight after it has splashed down
    in a controlled manner at the right spot. He hopes this successful splash >>>> down will be on the next flight, therefore, as you said, on fifth flight >>>> he would attempt to catch Super Heavy.

    Note that catching Super Heavy is not important for NASA. It only serves >>>> to bring down costs, therefore increasing profits for SpaceX.

    To me the catching of the Super Heavy could be a do or die proposition. If >>> it fails SpaceX could be forced to rebuild the launch tower. And that
    could take months.

    The returning Super Heavy is mostly an empty shell, much lighter than the >> propellant-filled launch stack, which the launch tower and launch stand are >> designed to lift and support. It seems to me that the damage that could be >> done by a botched catch is limited and not too difficult to repair.

    Perhaps the worst case would be a crash on the propellant farm with perhaps >> also a methane-oxygen explosion.

    Compare the size of a drone ship to the area around the launch pad. Also note that Falcon 9 landings don't target the drone ship until after a successful relight. There is plenty of sea near the launch pad.

    The soft water landings will confirm that Booster's guidance works as expected. We already have seen Ships hit the mark, even though from a low altitude. If a successful reentry has the ship in the right place for the landing burn, than catch should be a piece of cake ... remember Booster and Ship have some hover time, unlike the F9.

    /dps

    It seems that at a recent talk at Starbase, Elon has said that Booster
    catch could be on Fight 5, Ship catch will take longer to confirm that
    it is ready ... sometime in 2025.

    Twixxers apparently can see the Musk talk on, um, Twix. I got the
    realy through Ellie In Space's youtube.

    /dps
    --
    Yes, I have had a cucumber soda. Why do you ask?
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