2020 TARC challenge, is there anything that says you CAN’T use an 800 foot cord

Discussion in 'The Watering Hole' started by BABAR, Jan 10, 2020.

Help Support The Rocketry Forum by donating:

  1. Jan 13, 2020 #31

    shreadvector

    shreadvector

    shreadvector

    Well-Known Member

    Joined:
    Jan 19, 2009
    Messages:
    8,887
    Likes Received:
    122
    TANSTAAFL
     
  2. Jan 13, 2020 #32

    BABAR

    BABAR

    BABAR

    Builds Rockets for NASA TRF Lifetime Supporter TRF Supporter

    Joined:
    Aug 27, 2011
    Messages:
    4,606
    Likes Received:
    576
    If I read it right, there is a minimum length but no maximum

    https://rocketcontest.org/wp-conten...les-TARC-2020-Final-as-of-18-May-2019.doc.pdf

    Section2.3

    Also I question the term “weaseling.” Definitely not conforming to the expected approach. However, per Einstein

    We cannot solve our problems with the same thinking we used when we created them.
     
    Last edited: Jan 13, 2020
  3. Jan 13, 2020 #33

    BABAR

    BABAR

    BABAR

    Builds Rockets for NASA TRF Lifetime Supporter TRF Supporter

    Joined:
    Aug 27, 2011
    Messages:
    4,606
    Likes Received:
    576
    Heinlein liked that term too.

    For those not familiar with the acronym:

    There Ain’t No Such Thing As A Free Lunch
     
    Last edited: Jan 13, 2020
    dhbarr likes this.
  4. Jan 13, 2020 #34

    manixFan

    manixFan

    manixFan

    Not a rocket scientist

    Joined:
    Feb 15, 2009
    Messages:
    1,316
    Likes Received:
    337
    Gender:
    Male
    Location:
    TX
    As an aside, I tried the St Lous Arch once with a roll of crepe paper tied to a Big Bertha (as best I can recall). It was very cool but the rocket arced so much it hit the ground well before the ejection charge went off. But I got a lot of style points from all the kids watching.


    Tony
     
    Last edited: Jan 13, 2020
    mbeels likes this.
  5. Jan 13, 2020 #35

    jadebox

    jadebox

    jadebox

    Roger Smith TRF Sponsor

    Joined:
    Jan 18, 2009
    Messages:
    5,498
    Likes Received:
    77
    You are right on both counts. I wasn't looking at the rules as I posted that last message.

    "Weaseling" was a bad word choice. Of course, the rules are intended to allow creative solutions and the contest encourages innovation.

    But, the rules should ensure that launches are safe. A concern is that the rope is likely to make the rocket arc - potentially towards onlookers. So, in addition to the challenges of getting the technique to work, the team would have to demonstrate that they can do it safely. (Having been cut by the string when I used to fly kites, I am afraid of what a fast-moving, thin cord might do.)

    Even if not expressly stated in the rules, the RSO should be able step in if concerned about the safety of a flight.

    And, in any case, this is probably like the "rocktoon" idea. It seems straight-forward and easy when initially considered, but in reality is probably quite difficult. :)
     
    Last edited: Jan 13, 2020
    Nytrunner likes this.
  6. Jan 13, 2020 #36

    BABAR

    BABAR

    BABAR

    Builds Rockets for NASA TRF Lifetime Supporter TRF Supporter

    Joined:
    Aug 27, 2011
    Messages:
    4,606
    Likes Received:
    576
    I am completely in agreement with you that if this option is tried the first attempt should be with a low-power rocket , on the away pad, with no Spectators around and all of the rocketeers definitely eyeing the pad and the rocket at the time of launch. Absolutely no argument that safety must always be our number one concern.
     
  7. Jan 14, 2020 #37

    GuyNoir

    GuyNoir

    GuyNoir

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    1,308
    Likes Received:
    17
    Gender:
    Male
    Location:
    Woodstock, IL
    Instead of debating the rules here, why not just ask Trip Barber, the NAR TARC manager, if what you're proposing would be permitted?
     
    Nytrunner likes this.
  8. Jan 14, 2020 #38

    Sooner Boomer

    Sooner Boomer

    Sooner Boomer

    Well-Known Member

    Joined:
    Mar 21, 2011
    Messages:
    2,594
    Likes Received:
    187
    What? Ruin a good argument with facts?
     
  9. Jan 14, 2020 #39

    DAllen

    DAllen

    DAllen

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    4,404
    Likes Received:
    356
    The impression I get from the OP is this thread is meant to be more of a thought experiment than anything else...
     
  10. Jan 15, 2020 #40

    Ez2cDave

    Ez2cDave

    Ez2cDave

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    2,811
    Likes Received:
    640
    Heinlein must have been a Conservative !

    Dave F.
     
  11. Jan 15, 2020 #41

    BABAR

    BABAR

    BABAR

    Builds Rockets for NASA TRF Lifetime Supporter TRF Supporter

    Joined:
    Aug 27, 2011
    Messages:
    4,606
    Likes Received:
    576
    In some ways yes. In "The Moon's a Harsh Mistress" and "Farnham's Freehold" he was definitely against unrestricted welfare benefits and definitely for limited government. In terms of "social norms" he was definitely and extremely liberal. Made for an interesting mix in his books.
     
  12. Jan 15, 2020 #42

    Ez2cDave

    Ez2cDave

    Ez2cDave

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    2,811
    Likes Received:
    640
    Hmm . . . Perhaps Heinlein was Bi-Polar, too.

    Dave F.
     
  13. Jan 15, 2020 #43

    neil_w

    neil_w

    neil_w

    "The hex lug nut cut the mustard" TRF Supporter

    Joined:
    Jul 14, 2015
    Messages:
    7,083
    Likes Received:
    1,215
    Location:
    Northern NJ
    I love that this thread is now up to 42 posts.
     
  14. Jan 15, 2020 #44

    boatgeek

    boatgeek

    boatgeek

    Well-Known Member

    Joined:
    Dec 27, 2014
    Messages:
    2,009
    Likes Received:
    534
    It's received the Ultimate Answer! (And now I've broken it).
     
  15. Jan 16, 2020 #45

    Yukon@K-9 Rocket Tech

    Yukon@K-9 Rocket Tech

    Yukon@K-9 Rocket Tech

    Just a teen who likes building rockets

    Joined:
    Jun 21, 2019
    Messages:
    184
    Likes Received:
    29
    Gender:
    Male
    Location:
    Georgia, USA
  16. Jan 16, 2020 #46

    Scott Hala

    Scott Hala

    Scott Hala

    Forum Supporter TRF Supporter

    Joined:
    May 6, 2019
    Messages:
    133
    Likes Received:
    46
    Gender:
    Male
    Location:
    Huber Heights, Ohio
    Just because ....

    Cats rule. Dogs drool.
     

Share This Page