• 7 minutes of terror

    From August Abolins@1:396/45.29 to All on Mon Feb 22 20:45:00 2021
    ==================================================================<
    ** Original area : "/FIDO/CHAT"
    ** Original message from : August Abolins@1:153/757.21
    ** Original message to : Wilfred van Velzen
    ** Original date/time : 22 Feb 21, 19:38 >==================================================================<

    ** On Monday 22.02.21 - 21:52, Wilfred wrote:

    Here's the vid:

    https://www.youtube.com/watch?v=4czjS9h4Fpg

    Impressive!

    I started downloading one of the recorded live streams (approx 2
    hrs).. then changed my mind when the audio and view streams
    didn't merge with youtube-dl. :( But the above file was all
    that was needed.

    It seemed like an exciting 3 minute ride.

    I'm surprised that the module (before chute deployment) doesn't
    start tumbling and turning during the fastest approach.

    Then, after the chute deployed, you could see a bit of a
    swinging motion.

    The images were fantastic. The very last few seconds looked
    precarious when all the soil started to block the cameras
    though.

    --
    ../|ug

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  • From Wilfred van Velzen@2:280/464 to August Abolins on Tue Feb 23 09:47:09 2021
    * Originally in CHAT
    * Crossposted in ASTRONOMY

    Hi August,

    On 2021-02-22 19:38:00, you wrote to me:

    Here's the vid:

    https://www.youtube.com/watch?v=4czjS9h4Fpg

    Impressive!

    I started downloading one of the recorded live streams (approx 2
    hrs).. then changed my mind when the audio and view streams
    didn't merge with youtube-dl. :( But the above file was all
    that was needed.

    It seemed like an exciting 3 minute ride.

    I'm surprised that the module (before chute deployment) doesn't
    start tumbling and turning during the fastest approach.

    The heatshield shape is designed in such a way that it doesn't. They have experience with that since before the apollo program! ;)

    Then, after the chute deployed, you could see a bit of a
    swinging motion.

    The images were fantastic. The very last few seconds looked
    precarious when all the soil started to block the cameras
    though.

    That's how you know it's real! ;)


    Bye, Wilfred.

    --- FMail-lnx64 2.1.0.18-B20170815
    * Origin: FMail development HQ (2:280/464)
  • From August Abolins@1:396/45.29 to Wilfred van Velzen on Tue Feb 23 23:05:00 2021
    Hello Wilfred!

    ** On Tuesday 23.02.21 - 09:47, you wrote to me:

    I'm surprised that the module (before chute deployment)
    doesn't start tumbling and turning during the fastest
    approach.

    The heatshield shape is designed in such a way that it
    doesn't. They have experience with that since before the
    apollo program! ;)

    OK.. but considering the turmoil those capsules encounter upon
    reentry to Earth's atmosphere (which is thicker than Mar's) I am
    still surprised that something doesn't cause them to tip the
    wrong way and tumbling ensues.

    Entering Mar's atmosphere was less problematic. I get that the
    design is like a dart's and the air passing around it (drag)
    contributes to stablize it. It still seems amazing to me
    especially when supersonic speed is involved and a whole lot of
    shaking and internal heat could affect the electronics.

    The images were fantastic. The very last few seconds
    looked precarious when all the soil started to block the
    cameras though.

    That's how you know it's real! ;)

    Well.. a lot of things can still be faked.

    I wish we could have seen about 2 or 3 minutes more right after
    the landing as the dust cloud settles. Then it would seem more
    real to me.

    But the choreography of events one after another and hoping that
    there would be no malfunctions.. that's stressful.

    I was reading a bit on past missions to Mars, and on one of them
    a simple misundersting in the use of meteric vs british
    measuring system caused the mission to fail.

    --
    ../|ug

    --- OpenXP 5.0.49
    * Origin: (1:396/45.29)
  • From Wilfred van Velzen@2:280/464 to August Abolins on Wed Feb 24 18:35:38 2021
    Hi August,

    On 2021-02-23 23:05:00, you wrote to me:

    The heatshield shape is designed in such a way that it
    doesn't. They have experience with that since before the
    apollo program! ;)

    OK.. but considering the turmoil those capsules encounter upon
    reentry to Earth's atmosphere (which is thicker than Mar's) I am
    still surprised that something doesn't cause them to tip the
    wrong way and tumbling ensues.

    Apparently the engineers know what they are doing. And they probably did al lot of testing in the past. ;)

    I wish we could have seen about 2 or 3 minutes more right after
    the landing as the dust cloud settles. Then it would seem more
    real to me.

    There were also some interuptions in the video. I wish they would publish the whole thing uninterrupted from all camera's.

    But the choreography of events one after another and hoping that
    there would be no malfunctions.. that's stressful.

    I was reading a bit on past missions to Mars, and on one of them
    a simple misundersting in the use of meteric vs british
    measuring system caused the mission to fail.

    That's a "famous" case... ;)

    Bye, Wilfred.

    --- FMail-lnx64 2.1.0.18-B20170815
    * Origin: FMail development HQ (2:280/464)
  • From August Abolins@1:396/45.29 to Wilfred van Velzen on Wed Feb 24 19:45:00 2021
    Hello Wilfred!

    ** On Wednesday 24.02.21 - 18:35, you wrote to me:

    I wish we could have seen about 2 or 3 minutes more right
    after the landing as the dust cloud settles. Then it would
    seem more real to me.

    There were also some interuptions in the video. I wish
    they would publish the whole thing uninterrupted from all
    camera's.

    There was? I thought the footage from chute deployment to
    landing was contiguous and unedited.

    --
    ../|ug

    --- OpenXP 5.0.49
    * Origin: (1:396/45.29)
  • From Wilfred van Velzen@2:280/464 to August Abolins on Thu Feb 25 09:42:20 2021
    Hi August,

    On 2021-02-24 19:45:00, you wrote to me:

    I wish we could have seen about 2 or 3 minutes more right
    after the landing as the dust cloud settles. Then it would
    seem more real to me.

    There were also some interuptions in the video. I wish
    they would publish the whole thing uninterrupted from all
    camera's.

    There was? I thought the footage from chute deployment to
    landing was contiguous and unedited.

    I think I noticed 1 or 2 skips in time (or so I thought). But I'll have to watch it again, to be sure... And it certainly wasn't uneditted, because there was at least one switch from the upwards looking camera (showing the paracute), to the downwards looking camera (showing approaching mars, the falling heat shield, and the lander).

    Bye, Wilfred.

    --- FMail-lnx64 2.1.0.18-B20170815
    * Origin: FMail development HQ (2:280/464)
  • From August Abolins@1:396/45.29 to Wilfred van Velzen on Thu Feb 25 09:28:00 2021
    Hello Wilfred van Velzen!

    ** On Thursday 25.02.21 - 09:42, you wrote:

    I think I noticed 1 or 2 skips in time (or so I thought).
    But I'll have to watch it again, to be sure... And it
    certainly wasn't uneditted, because there was at least one
    switch from the upwards looking camera (showing the
    paracute), to the downwards looking camera (showing
    approaching mars, the falling heat shield, and the
    lander).

    I would have LOVED to see the heat shield hit the surface of the
    planet. Kind of like a Wile E Coyote moment! :)

    --
    ../|ug

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  • From George Pope@1:153/757.2 to August Abolins on Wed Aug 11 13:02:52 2021
    Not sure I get the "7 minutes of terror" title -- I thought "7 minutes of terror" was the brand name of the first pregnancy test that gave results in under 30 minutes.. . :)

    https://www.youtube.com/watch?v=4czjS9h4Fpg


    I'm surprised that the module (before chute deployment) doesn't
    start tumbling and turning during the fastest approach.

    Possibly corrected by computer & combined/rendered as a single smooth video?

    The images were fantastic. The very last few seconds looked
    precarious when all the soil started to block the cameras

    A very enjoyable view!

    Getting to be old news, though. .

    Oh, we landed another ship on an alien planet. . ho hum. . .

    What's on TV? :D J/King I'm no fan of TV. . .

    Your friend,

    <+]:{)}
    Cyberpope, Bishop of ROM
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