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  1. #1
    Join Date
    26th January 2010
    Location
    Northern California
    Posts
    13,459

    LUNAR is on for December 13

    The LUNAR Snow Ranch launch is on tomorrow. However, it will be a low/mid power launch. 3.3lbs and 80ns max. I'll be there!

    NAR 91107, Level 2

    I really, really hate bugs.

  2. #2
    Join Date
    9th October 2013
    Location
    San Jose, CA
    Posts
    690
    I'll be sitting this one out, only my Go Devil 38 is <3.3 lbs and I don't have any motors that qualify. So I'll take the long weekend to build and look forward to next weekend's TCC launch. Looks like it should be a nice day though, have fun!

    Will Ferry (Launches & Videos) NAR #96512 (L2) / TRA #15328 (L2) / LUNAR #2759
    L1: 9/2013 @ XPRS, GLR T-Bolt "Thunderbolt" (R.I.P.), H148R
    L2: 4/2016 @ TCC Helm, Binder Design Excel w/DD "dd2.xls", J315R
    Impulse flown (flights): 2013: 767Ns (2), 2014: 4298Ns (8), 2015: 7486Ns (16), 2016: 11693Ns (18), 2017: 11138Ns (16), 2018: 3879Ns (5)

  3. #3
    Join Date
    26th January 2010
    Location
    Northern California
    Posts
    13,459
    If BAR is there (I haven't heard yet), you could buy a motor on site.
    NAR 91107, Level 2

    I really, really hate bugs.

  4. #4
    Join Date
    19th June 2017
    Location
    Vacaville, CA
    Posts
    408
    December 13th?? I'll be there. But where is this 80N limit coming from? We should start calling them "Class 1" or "Class 2" launches. There appear to be several H motors that fall into "Class 1" FAR 101

    And I hope BAR Mike will be there.
    Eric Hamilton, NAR, TRA
    SARG, LUNAR
    Level 1, Estes Argent, H115DM
    Level 2, Scratchbuilt 2.6", J270G

  5. #5
    Join Date
    26th January 2010
    Location
    Northern California
    Posts
    13,459
    They're currently discussing that on Facebook. Looks like it might be just 1500g rocket weight limit, and 135g propellant weight.
    NAR 91107, Level 2

    I really, really hate bugs.

  6. #6
    Join Date
    19th June 2017
    Location
    Vacaville, CA
    Posts
    408
    Quote Originally Posted by qquake2k View Post
    They're currently discussing that on Facebook. Looks like it might be just 1500g rocket weight limit, and 135g propellant weight.
    Yes, I'm following along. Some smaller H flights would be nice as well.

    Sent from my VS988 using Tapatalk
    Eric Hamilton, NAR, TRA
    SARG, LUNAR
    Level 1, Estes Argent, H115DM
    Level 2, Scratchbuilt 2.6", J270G

  7. #7
    Join Date
    26th January 2010
    Location
    Northern California
    Posts
    13,459
    I agree. Some of the 29mm H motors have less than 135g of propellant.
    NAR 91107, Level 2

    I really, really hate bugs.

  8. #8
    Join Date
    22nd January 2009
    Location
    Plano, TX
    Posts
    3,320
    One small correction: 125 grams of propellant.


    https://www.ecfr.gov/cgi-bin/text-id...se14.2.101_123

    §101.22 Definitions.
    The following definitions apply to this subpart:

    (a) Class 1—Model Rocket means an amateur rocket that:

    (1) Uses no more than 125 grams (4.4 ounces) of propellant;

    (2) Uses a slow-burning propellant;

    (3) Is made of paper, wood, or breakable plastic;

    (4) Contains no substantial metal parts; and

    (5) Weighs no more than 1,500 grams (53 ounces), including the propellant.

    (b) Class 2—High-Power Rocket means an amateur rocket other than a model rocket that is propelled by a motor or motors having a combined total impulse of 40,960 Newton-seconds (9,208 pound-seconds) or less.

    (c) Class 3—Advanced High-Power Rocket means an amateur rocket other than a model rocket or high-power rocket.

  9. #9
    Join Date
    26th January 2010
    Location
    Northern California
    Posts
    13,459
    I'm still waiting for official word from Tony on Facebook.
    NAR 91107, Level 2

    I really, really hate bugs.

  10. #10
    Join Date
    26th January 2010
    Location
    Northern California
    Posts
    13,459
    Tony confirmed it. 1500g max rocket weight, 125g propellant weight.
    NAR 91107, Level 2

    I really, really hate bugs.

  11. #11
    Join Date
    26th November 2014
    Location
    Oakdale, California
    Posts
    87
    Anything from BAR? With ROC rained out i had hoped he would show. Of course i could just throw the E18W in my ACME spitfire for its first flight, but I'd rather buy something a little more reasonable.
    -Phil Calvin
    NAR 98859 L1 (1/3/2015)
    TRA 15707 L2 (10/16/2015)

  12. #12
    Join Date
    26th January 2010
    Location
    Northern California
    Posts
    13,459
    I just called Mike at BAR, and he still doesn't know for sure if he'll be there. I'd say there's a 50/50 chance he'll show.
    NAR 91107, Level 2

    I really, really hate bugs.

  13. #13
    Join Date
    26th November 2014
    Location
    Oakdale, California
    Posts
    87
    Very nice launch today, nice to see so many folks out there. Sometimes it's nice to go out and just fly, no high power flight stress. Flew the heck out of an ACME Spitfire C11, D12, swmbo vetoed the E18w) and a Skypyrates Punisher with an Eggfinder mini on an F52 for its first flight.
    Last edited by pcalviln; 14th January 2018 at 02:44 AM.
    -Phil Calvin
    NAR 98859 L1 (1/3/2015)
    TRA 15707 L2 (10/16/2015)

  14. #14
    Join Date
    19th June 2017
    Location
    Vacaville, CA
    Posts
    408
    Very good rocket launching today. Click image for larger version. 

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    Sent from my VS988 using Tapatalk
    Eric Hamilton, NAR, TRA
    SARG, LUNAR
    Level 1, Estes Argent, H115DM
    Level 2, Scratchbuilt 2.6", J270G

  15. #15
    Join Date
    25th June 2014
    Posts
    850
    Quote Originally Posted by Eric View Post
    Very good rocket launching today. Click image for larger version. 

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    Sent from my VS988 using Tapatalk
    Lots of CATOs (my AT G77 being one of them!) but a great day overall.

  16. #16
    Join Date
    17th January 2011
    Location
    Spring Green WI
    Posts
    2,795
    Great pictures. What motor did you fly the Raptor on. I just finished building one. I plan on using a JLCR for the 1st flight.
    TRA 2225
    TWA
    QCRS
    WOOSH

  17. #17
    Join Date
    19th June 2017
    Location
    Vacaville, CA
    Posts
    408
    The Rapton flew on a G79-10W. That was about a second to much delay. StrattologgerCF said it went to 1359'. I was simming 1900'.

    It looked like thrust build up was slow on launch and I never heard apogee or motor backup. Sounded like two pops at main deploy.

    The flight graph looks weird this time. Anyone know what's up with alt drop right at apogee? And the velocity is all messed up.


    .
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    Sent from my VS988 using Tapatalk
    Eric Hamilton, NAR, TRA
    SARG, LUNAR
    Level 1, Estes Argent, H115DM
    Level 2, Scratchbuilt 2.6", J270G

  18. #18
    Join Date
    21st December 2010
    Location
    Champaign, IL
    Posts
    238
    That inverted spike at apogee (and another little one at main deployment) is likely a leak of ejection charge pressure into your avbay. That momentary increase in pressure looks to the altimeter like a drop in altitude.

    Since velocity is just a calculated result using the altitude data over time, an error in one produces an error in the other.

    Take a close look at the avbay bulkheads and their fit, and any holes through which you pass wire or hardware, and seal it up. Fun-tack or sticky-tack, the sticky putty used to put posters on the wall is a good temporary seal around wires and bulkhead holes that you can't permanently seal by other means (epoxy, RTV, etc.).

    Mark
    Mark Joseph
    TRA/NAR L2
    Central Illinois Aerospace

  19. #19
    Join Date
    19th June 2017
    Location
    Vacaville, CA
    Posts
    408
    Thats how I set it up. Its a stepped G10 bulkplate from Madcow. No sealant between bulkhead and coupler tube. Put putty on both sides. Click image for larger version. 

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    Sent from my VS988 using Tapatalk

    Eric Hamilton, NAR, TRA
    SARG, LUNAR
    Level 1, Estes Argent, H115DM
    Level 2, Scratchbuilt 2.6", J270G

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