1. Attachments are working again! Check out this thread for more details and to report any other bugs.

Texas Starship Testing

Discussion in 'Environmental Discussion' started by bwilson4web, Nov 24, 2020.

  1. tochatihu

    tochatihu Senior Member

    Joined:
    Apr 10, 2004
    9,014
    3,511
    0
    Location:
    Kunming Yunnan China
    Vehicle:
    2001 Prius
    ...
     
  2. tochatihu

    tochatihu Senior Member

    Joined:
    Apr 10, 2004
    9,014
    3,511
    0
    Location:
    Kunming Yunnan China
    Vehicle:
    2001 Prius
  3. fuzzy1

    fuzzy1 Senior Member

    Joined:
    Feb 26, 2009
    17,201
    10,107
    90
    Location:
    Western Washington
    Vehicle:
    Other Hybrid
    Model:
    N/A
    How far? Or probably even more importantly, how fast?

    I seem to remember a Shuttle, and possibly a Saturn V as well, experiencing unplanned early shutdown of a single nozzle, but late enough they still got up to usable orbit. With all the engines fed from the same tanks, the other engines can still make use of that fuel, if it isn't pumped out the dead engine. Salvageable when it happens far enough up, but not down low. I'm remembering videos of some rocket launches were launchpad thrust was less than required.
     
  4. tochatihu

    tochatihu Senior Member

    Joined:
    Apr 10, 2004
    9,014
    3,511
    0
    Location:
    Kunming Yunnan China
    Vehicle:
    2001 Prius
  5. bwilson4web

    bwilson4web BMW i3 and Model 3

    Joined:
    Nov 25, 2005
    27,254
    15,454
    0
    Location:
    Huntsville AL
    Vehicle:
    2018 Tesla Model 3
    Model:
    Prime Plus
    This was interesting to me:

    . . . The launch means Space Pioneer—full name Beijing Tianbing Technology Co., Ltd—becomes the first private company to reach orbit with its first launch.

    Aiming for medium-lift next ... The three-stage Tianlong-2 is capable of carrying 2 metric tons to low-Earth orbit. The company has raised a large amount of money, $438 million, since its founding in 2018. This money will be used, in part, for the development of the larger Tianlong-3 launcher and its rocket engines. This Falcon 9-like rocket will be capable of lifting 15 tons to low-Earth orbit, with a reusable first stage. . . .

    Bob Wilson
     
  6. tochatihu

    tochatihu Senior Member

    Joined:
    Apr 10, 2004
    9,014
    3,511
    0
    Location:
    Kunming Yunnan China
    Vehicle:
    2001 Prius
  7. tochatihu

    tochatihu Senior Member

    Joined:
    Apr 10, 2004
    9,014
    3,511
    0
    Location:
    Kunming Yunnan China
    Vehicle:
    2001 Prius
  8. bwilson4web

    bwilson4web BMW i3 and Model 3

    Joined:
    Nov 25, 2005
    27,254
    15,454
    0
    Location:
    Huntsville AL
    Vehicle:
    2018 Tesla Model 3
    Model:
    Prime Plus
    After two successful launches, I'll drive down 1121 miles, one 20 hour day. I'd really like to observe a landing, the tricky part.

    Bob Wilson
     
    #28 bwilson4web, Nov 16, 2023
    Last edited: Nov 16, 2023
  9. ETC(SS)

    ETC(SS) The OTHER One Percenter.....

    Joined:
    Oct 28, 2010
    7,706
    6,507
    0
    Location:
    Redneck Riviera (Gulf South)
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    What goes up.....

    I'll be watching, of course.
    It will certainly be interesting.
     
  10. bwilson4web

    bwilson4web BMW i3 and Model 3

    Joined:
    Nov 25, 2005
    27,254
    15,454
    0
    Location:
    Huntsville AL
    Vehicle:
    2018 Tesla Model 3
    Model:
    Prime Plus
    It usually takes 3-4 attempts to get it right. We often learn more from failures.

    Bob Wilson
     
  11. ETC(SS)

    ETC(SS) The OTHER One Percenter.....

    Joined:
    Oct 28, 2010
    7,706
    6,507
    0
    Location:
    Redneck Riviera (Gulf South)
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    I'm old enough to remember people poking fun at Elon for trying to land his boosters.
     
  12. Mendel Leisk

    Mendel Leisk Luddite

    Joined:
    Oct 17, 2010
    54,998
    38,400
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    You're saying the only solution is to "ditch this berg"? o_O
     
  13. bwilson4web

    bwilson4web BMW i3 and Model 3

    Joined:
    Nov 25, 2005
    27,254
    15,454
    0
    Location:
    Huntsville AL
    Vehicle:
    2018 Tesla Model 3
    Model:
    Prime Plus
    Not so much ditch but like jumping out of perfectly fine airplane ... have a reserve chute.

    Bob Wilson
     
    #33 bwilson4web, Nov 16, 2023
    Last edited: Nov 16, 2023
    Mendel Leisk likes this.
  14. tochatihu

    tochatihu Senior Member

    Joined:
    Apr 10, 2004
    9,014
    3,511
    0
    Location:
    Kunming Yunnan China
    Vehicle:
    2001 Prius
    One-day delay to replace a grid fin actuator. The idea a big rocket can be taken apart, part replaced, and reassembled in one day seems very much the essence of space flight Musk style.

    However, human migration off Earth will not happen by way of shiny methane burners. Good for bopping around the solar system, but migration is a much larger challenge.
     
  15. vvillovv

    vvillovv Senior Member

    Joined:
    Mar 19, 2013
    3,536
    1,249
    1
    Location:
    NY
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Plus
    I saw a related blurb a week ago bout employee conditions while trying to make deadlines.
    At SpaceX, worker injuries soar in Elon Musk’s rush to Mars

    guessing what we don't NO can't hurt us.

    I noticed the blurb mentioned above while I was reading about the big 4 audit firms ( Deloitte, Ernst & Young (EY), KPMG, and PwC.) and getting schooled on how many ( big? ) fraud cases I'd never even heard of till last week.

    -- this link isn't where I read the article but it is basically what I read concerning employees meeting deadlines.
    SpaceX Workers Took Adderall, Slept in Bathroom: Report

    any-ones guess how accurate the reporting is, these days.
     
    #35 vvillovv, Nov 17, 2023
    Last edited: Nov 17, 2023
  16. bwilson4web

    bwilson4web BMW i3 and Model 3

    Joined:
    Nov 25, 2005
    27,254
    15,454
    0
    Location:
    Huntsville AL
    Vehicle:
    2018 Tesla Model 3
    Model:
    Prime Plus
    Chemical rockets will always be limited and dependent on gravity assist. Nuclear rockets have their own set of problems. Even those using solar power soon run out of oomph. Of course any journey begins with a 'single step.'

    Bob Wilson
     
  17. bwilson4web

    bwilson4web BMW i3 and Model 3

    Joined:
    Nov 25, 2005
    27,254
    15,454
    0
    Location:
    Huntsville AL
    Vehicle:
    2018 Tesla Model 3
    Model:
    Prime Plus

    . . . LeBlanc, a relatively new employee, offered a solution to hold down the load: He sat on it.

    After the truck drove away, a gust blew LeBlanc and the insulation off the trailer, slamming him headfirst into the pavement. LeBlanc, 38, had retired nine months earlier from the U.S. Marine Corps. He was pronounced dead from head trauma at the scene.

    A former Marine, this does not surprise me. You may want to complement this article with reports of recruit deaths. For example: https://en.wikipedia.org/wiki/Ribbon_Creek_incident

    The Ribbon Creek incident occurred on the night of April 8, 1956, when Staff Sergeant Matthew McKeon, a junior drill instructor at the Marine Corps Recruit Depot Parris Island, South Carolina, marched his assigned platoon into Ribbon Creek, a swampy tidal creek. The incident resulted in the deaths of six United States Marine Corps recruits.

    Bob Wilson
     
  18. bwilson4web

    bwilson4web BMW i3 and Model 3

    Joined:
    Nov 25, 2005
    27,254
    15,454
    0
    Location:
    Huntsville AL
    Vehicle:
    2018 Tesla Model 3
    Model:
    Prime Plus
    .
     
    #37 bwilson4web, Nov 17, 2023
    Last edited: Nov 17, 2023
  19. vvillovv

    vvillovv Senior Member

    Joined:
    Mar 19, 2013
    3,536
    1,249
    1
    Location:
    NY
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Plus
    I've heard that seal training, especially hypoxia has also done in some recruits.
    Breath Holding and Shallow Water Blackout - The Redwoods Group
    I've read the idea behind the training is to get the person acquainted with passing out to reduce
    anxiety / panic typically initially experienced with blacking out.
    In sports like running, swimming and probably others, it used to be know as graduated breathing workouts.
    And can also be dangerous if an athlete is driven hard enough.
    I've read that the average human lung capacity is around 2 quarts of air. On a slightly different note, I've read that a recent well known gold medal Olympic swimmers lung capacity is 22 quarts of air. (mind boggling to me as I try to learn the fifth swimming stroke - underwater dolphin).
    Underwater dolphin is basically the butterfly stroke, under water, without using arms to pull.
     
  20. bwilson4web

    bwilson4web BMW i3 and Model 3

    Joined:
    Nov 25, 2005
    27,254
    15,454
    0
    Location:
    Huntsville AL
    Vehicle:
    2018 Tesla Model 3
    Model:
    Prime Plus
    Are the four stars in the background Ursla Major?

    upload_2023-11-18_5-24-19.png

    My cheeks are going to be hurting for the rest of the day.

    Bob Wilson
     
    #39 bwilson4web, Nov 18, 2023
    Last edited: Nov 18, 2023
  21. ETC(SS)

    ETC(SS) The OTHER One Percenter.....

    Joined:
    Oct 28, 2010
    7,706
    6,507
    0
    Location:
    Redneck Riviera (Gulf South)
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    Welp, they lit the candle.
    Mixed results but the payload got to 149km before the auto-RUD and I'm not hearing about any major pad damage, so I'm thinking that it's a REALLY good outcome.
    I'm less concerned about stage1 sticking the landing, since that's an efficiency thing rather than a mission critical event.
    Stage one lifted its end of the log - perfectly.
    Thirty-three Raptors singing in concert is a super non-trivial thing, and SpaceX made it look easy - just like any pro team does.
    Hopefully they will stack and stage #3 soon.

    There was GOING to be a second launch out of Vandy for a Starlink mission, which would have made for 2 launches in one day.
    SpaceX has already orbited two payloads in under 6 hours this year, but twice in one year would have been a good look for a company that ALREADY looks good.