Level 2 certification flight

Discussion in 'High Power Rocketry (HPR)' started by Chad, Oct 20, 2019.

Help Support The Rocketry Forum by donating:

  1. Oct 20, 2019 #1

    Chad

    Chad

    Chad

    Well-Known Member

    Joined:
    Jul 23, 2018
    Messages:
    167
    Likes Received:
    51
    Gender:
    Male
    Location:
    Dallas
    I certified level 2 today at the DARS monthly high power launch in Gunter TX using an Aerotech J250 on my trusty old Madcow DX3 4".

    Special thanks to George and Sam for all their help and advice. I originally was going to attempt the certification with a two-stage but it's not 100% ready and this was hard enough as it is. I used a StratologgerCF to handle dual deployment with motor ejection as a backup for the drogue. After the flight, the altimeter beeped out 3,700 feet which was about perfect. Openrocket simulation put it at 4,097 feet and thrustcurve predicted ~3,500 feet.

     
  2. Oct 20, 2019 #2

    OverTheTop

    OverTheTop

    OverTheTop

    Forum Supporter TRF Supporter

    Joined:
    Jul 10, 2007
    Messages:
    2,992
    Likes Received:
    602
    Gender:
    Male
    Location:
    Melbourne Australia
    Nice flight. Congratulations. Welcome to L2 :).
     
  3. Oct 20, 2019 #3

    Dustin Lobner

    Dustin Lobner

    Dustin Lobner

    Well-Known Member

    Joined:
    Sep 3, 2019
    Messages:
    63
    Likes Received:
    18
    Gender:
    Male
    Awesome, congrats!!

    Edit - as I was asked 3 seconds after my L2 success, when is L3? :cool:;)
     
  4. Oct 20, 2019 #4

    Mugs914

    Mugs914

    Mugs914

    Well-Known Member

    Joined:
    Oct 1, 2012
    Messages:
    656
    Likes Received:
    157
    Gender:
    Male
    Location:
    Temple Texas
    Way to go Chad!! Congrats!
     
  5. Oct 20, 2019 #5

    tOD

    tOD

    tOD

    Sinking in the quicksand of HPR TRF Supporter

    Joined:
    Jul 31, 2018
    Messages:
    261
    Likes Received:
    96
    Gender:
    Male
    Location:
    Pittsburgh, PA
    Good job!
    This is almost a twin to my L2 flight in April. DX3 is a great rocket.
    Mine has the 54mm motor mount. I flew it once on a 54mm DMS J450 to 4377ft. I got some CTI 54mm hardware and would like to try it on a K motor when I can travel to a large site.
     
  6. Oct 20, 2019 #6

    Chad

    Chad

    Chad

    Well-Known Member

    Joined:
    Jul 23, 2018
    Messages:
    167
    Likes Received:
    51
    Gender:
    Male
    Location:
    Dallas
    Yes, i can't say enough good things about the DX3. I have the 4" cardboard 54mm motor mount version and did my Level 1 on it with a 54mm to 38mm adapter and H100. That poor thing has survived one failed deployment crash plus my hacking to figure out build/finishing techniques and it still delivers. I think the 4" body tube is the best for newcomers to HPR because you can easily get a hand all the way down the tube for things like centering ring fillets, rail buttons, etc.

    yeah i'm at a crossroads,
    I set a goal for myself to follow the workbench 2.0 build thread and launch to > 100k' at BALLS next year. My plan for L3 is a scaled down version of that workbench 2.0 build. L3, AFAIK, has to be done with a single stage design so I guess I will do L3 sometime early-2020 flying the booster as a stand alone rocket. Tripoli North Texas flies with a team near Waco TX that has a waiver to 20k feet. I want to fly the scaled down workbench 2.0 build at least 3 times there then comes the BALLS build.

    On the other hand,
    L3 class motors are very expensive and it's not like you can take an M to your local club and fly unless you have an out of the ordinary local club. Honestly, i'd like to do more mid-power and even low-power because I can take my boys out to the local park and launch there. On a G, you can still fly altimeters and do dual deployment and all the advanced stuff. Finally, my wife has been begging me to start a rocket club at my kid's elementary school but i have a bad habit of overcommitting myself. If i choose to do that it will consume what little free time i have.
     
  7. Oct 20, 2019 #7

    Dustin Lobner

    Dustin Lobner

    Dustin Lobner

    Well-Known Member

    Joined:
    Sep 3, 2019
    Messages:
    63
    Likes Received:
    18
    Gender:
    Male
    Chad,

    Completely understand the conundrum. I'm planning my L3, but it won't happen until spring of 2021 because I'm getting married next year and that's taking most financial resources.

    I started a rocketry club at work - one of my co-workers kids are homeschooled so it's evolved into coworkers and homeschooled kids. The lucky part is that my coworker lives on 25 acres, so we have an always available launch site to use for low and mid power stuff. Honestly, the biggest time commitment for me has been building rockets...been trying to motivate people to partake by launching as many of my own as I can, lol. Also spent a fair bit of time and money building the infrastructure - a 4 launch pad saw horse, electrical/fire control box for it, etc etc. Now that that initial effort is complete, I've been able to focus more on rockets themselves.

    Regardless of what you do, good luck. As far as the L3 goes, I guess what I'd say is be realistic in what you plan and commit to. If it's out of reach for the next couple of years, that doesn't make you a failure, lol.
     
  8. Oct 20, 2019 #8

    samb

    samb

    samb

    Lifetime Member

    Joined:
    Jan 22, 2009
    Messages:
    3,644
    Likes Received:
    106
    Location:
    Plano, TX
    Congratulations. You did the prep and followed your plan yesterday. Good show !
     
    Chad likes this.
  9. Oct 20, 2019 #9

    Fattbank64

    Fattbank64

    Fattbank64

    Well-Known Member

    Joined:
    May 9, 2018
    Messages:
    61
    Likes Received:
    19
    Congratulations!
     
  10. Oct 20, 2019 #10

    fyrechaser

    fyrechaser

    fyrechaser

    Builder of flying things TRF Supporter

    Joined:
    Apr 2, 2009
    Messages:
    739
    Likes Received:
    26
    Gender:
    Male
    Location:
    Blackwell, TX
    Congrats on your L2!
     
  11. Oct 20, 2019 #11

    mbeels

    mbeels

    mbeels

    Putting the tree in rocketry TRF Supporter

    Joined:
    Feb 9, 2019
    Messages:
    903
    Likes Received:
    298
    Gender:
    Male
    Yes, very nice flight! Congrats!
     
  12. Oct 21, 2019 #12

    deangelo54

    deangelo54

    deangelo54

    Well-Known Member

    Joined:
    Aug 21, 2015
    Messages:
    133
    Likes Received:
    22
    Congratulations! Text book approach for a L2 certification attempt. Big heavy rocket with a small J motor. Not to mention engine ejection as backup. For me it was a coin toss between the Madcow Torrent or the Super DX3. The only reason I chose the Torrent was because it was a bit heavier and Apogee had a nice video on how to build it. There is someone at a club I fly with that has a DX3. That baby takes a lick'n and keeps on tick'n. How about a photo or two of your DX3?
     
    Last edited: Oct 21, 2019
    g.pitts likes this.
  13. Oct 21, 2019 #13

    crossfire

    crossfire

    crossfire

    Lifetime Supporter TRF Lifetime Supporter

    Joined:
    Jan 16, 2011
    Messages:
    3,524
    Likes Received:
    185
    Great job on your L2 flight
     
  14. Oct 21, 2019 #14

    BABAR

    BABAR

    BABAR

    Builds Rockets for NASA TRF Lifetime Supporter TRF Supporter

    Joined:
    Aug 27, 2011
    Messages:
    4,371
    Likes Received:
    490
    Way to go!
     
  15. Oct 21, 2019 #15

    John Taylor

    John Taylor

    John Taylor

    Forum Supporter TRF Supporter

    Joined:
    Aug 22, 2019
    Messages:
    274
    Likes Received:
    64
    Gender:
    Male
    Congratulations!!!
     
  16. Oct 21, 2019 #16

    Steve Shannon

    Steve Shannon

    Steve Shannon

    Well-Known Member

    Joined:
    Jul 23, 2011
    Messages:
    5,122
    Likes Received:
    1,374
    Location:
    Butte, Montana
    Congratulations and welcome to higher power!
     
  17. Oct 21, 2019 #17

    John Taylor

    John Taylor

    John Taylor

    Forum Supporter TRF Supporter

    Joined:
    Aug 22, 2019
    Messages:
    274
    Likes Received:
    64
    Gender:
    Male
    Great flight! I was there and saw it.
    Motor back up....smart flyer!
    Way to go! Congratulations!
     
  18. Oct 21, 2019 #18

    jmwoody

    jmwoody

    jmwoody

    Retired Rocket Retread TRF Supporter

    Joined:
    Oct 29, 2018
    Messages:
    94
    Likes Received:
    46
    Location:
    Texas
    Well done Chad and congratulations on your L2 cert.

    Your L3 cert plans seem solid and there shouldn't be any issues moving up when keeping to the same build points as your L2 rocket.

    A 100,000 two stage for BALLS in less than a year is ambitious and a super high goal in more ways than one.

    Good luck Chad!

    C'ya out there

    John
     
  19. Oct 21, 2019 #19

    Bat-mite

    Bat-mite

    Bat-mite

    Rocketeer in MD

    Joined:
    Dec 5, 2013
    Messages:
    10,188
    Likes Received:
    1,077
    Gender:
    Male
    Location:
    Maryland
    Congrats!
     

Share This Page