AeroTech Open Thread

Discussion in 'Propulsion' started by ATGM, May 16, 2015.

Help Support The Rocketry Forum by donating:

  1. Nov 20, 2019 #3,181

    tbonerocketeer

    tbonerocketeer

    tbonerocketeer

    Sponsor TRF Sponsor

    Joined:
    Jan 19, 2009
    Messages:
    2,416
    Likes Received:
    109
    https://www.csrocketry.com/kits/aerotech/4-mega-initiator.html

    I expect them next week. Use notifications to get it when it arrives.
     
  2. Nov 20, 2019 #3,182

    mrtriton

    mrtriton

    mrtriton

    Active Member

    Joined:
    Mar 18, 2019
    Messages:
    43
    Likes Received:
    25
    Gender:
    Male
    It's out now. The Mega Initiator !!
     
  3. Nov 20, 2019 #3,183

    Scott Hala

    Scott Hala

    Scott Hala

    Forum Supporter TRF Supporter

    Joined:
    May 6, 2019
    Messages:
    136
    Likes Received:
    46
    Gender:
    Male
    Location:
    Huber Heights, Ohio
  4. Nov 25, 2019 #3,184

    STXFlyer

    STXFlyer

    STXFlyer

    Forum Supporter TRF Supporter

    Joined:
    Mar 13, 2019
    Messages:
    25
    Likes Received:
    26
    Gender:
    Male
    Good afternoon, i was wondering if anyone had access to the characterization numbers for AT propellants specifically for white lightning, i would like to plug them in to burn sim. I was also wondering about what are acceptable case pressures for reloadable motors. Any help would be appreciated.
     
  5. Nov 25, 2019 #3,185

    djs

    djs

    djs

    Well-Known Member

    Joined:
    Jul 27, 2014
    Messages:
    3,235
    Likes Received:
    207
    You can find the characterization numbers for each propellant under here:


    https://www.rocketmotorparts.com/Propellant_Grains/cat1577810_1952798.aspx


    For example- this one for white lightning:


    https://d1f7geppf3ca7.cloudfront.net/origin/170652/rcs_8225w_propellant_data.jpg


    Note- Aerotech tends to use some sort of plastic/phenolic nozzle which erodes a tiny bit as it burns..
     
    ATGM and Steve Shannon like this.
  6. Nov 25, 2019 #3,186

    Steve Shannon

    Steve Shannon

    Steve Shannon

    Well-Known Member

    Joined:
    Jul 23, 2011
    Messages:
    5,438
    Likes Received:
    1,747
    Location:
    Butte, Montana
    They sell their propellant grains at RCS with full characteristics:
    https://www.rocketmotorparts.com/98...rning_Propellant_Grain/p1577809_19048775.aspx
    IMG_0303.jpg
     
    ATGM likes this.
  7. Nov 26, 2019 #3,187

    STXFlyer

    STXFlyer

    STXFlyer

    Forum Supporter TRF Supporter

    Joined:
    Mar 13, 2019
    Messages:
    25
    Likes Received:
    26
    Gender:
    Male
    Thanks so much for the info guys!
     
  8. Nov 28, 2019 #3,188

    afadeev

    afadeev

    afadeev

    Well-Known Member

    Joined:
    Sep 21, 2017
    Messages:
    792
    Likes Received:
    160
    Has anyone successfully ordered and received G8 (16.6 seconds burn time) motors this year?

    I can't seam to find them at any of my usual HP vendors (WM, BPS, Sirius).

    Have they been pulled from production?
    Manufacturing constraints?

    TIA
     
  9. Nov 28, 2019 #3,189

    timbucktoo

    timbucktoo

    timbucktoo

    Well-Known Member Staff Member Global Mod

    Joined:
    Jun 13, 2014
    Messages:
    6,408
    Likes Received:
    661
    Gender:
    Male
    Location:
    Cocoa Beach
    They were decertified and anyone who bought them & still has them in possession can only use them at TRA research launches.
     
    afadeev likes this.
  10. Nov 28, 2019 #3,190

    afadeev

    afadeev

    afadeev

    Well-Known Member

    Joined:
    Sep 21, 2017
    Messages:
    792
    Likes Received:
    160
    Ouch, thank you!
     
  11. Dec 3, 2019 #3,191

    ATGM

    ATGM

    ATGM

    Forum Supporter TRF Supporter

    Joined:
    May 16, 2015
    Messages:
    719
    Likes Received:
    98
    We have a really nice 54mm cut-away we have been using for educational purposes but just that one. We are currently exploring the production of 6-12 more of various sizes for this reason.
     
    Steve Shannon likes this.
  12. Dec 3, 2019 #3,192

    ATGM

    ATGM

    ATGM

    Forum Supporter TRF Supporter

    Joined:
    May 16, 2015
    Messages:
    719
    Likes Received:
    98
    Your best shot would be electronics at this point. They're actually pretty fun eventually.
     
    tOD likes this.
  13. Dec 3, 2019 #3,193

    ATGM

    ATGM

    ATGM

    Forum Supporter TRF Supporter

    Joined:
    May 16, 2015
    Messages:
    719
    Likes Received:
    98
    The most common cause is that the closure isn't set all the way into the liner and therefore it's not sealed. We are updating the instructions so that the closure is seated in the liner before it is put into the casing. This allows the user to verify that the closure is sealed beforehand.

    The other possibility is that the casing wind angle was not correct and the dealer did not include the motor in the casing recall so the flyer never got the notice.
     
  14. Dec 3, 2019 #3,194

    ATGM

    ATGM

    ATGM

    Forum Supporter TRF Supporter

    Joined:
    May 16, 2015
    Messages:
    719
    Likes Received:
    98
    Yes, we will supply the reload and any motor hardware as well assuming it was a manufacturing issue.
     
  15. Dec 3, 2019 #3,195

    ATGM

    ATGM

    ATGM

    Forum Supporter TRF Supporter

    Joined:
    May 16, 2015
    Messages:
    719
    Likes Received:
    98
    Man I love hanging out here with you guys...a lot of good stuff on here. During the launch season though it has become increasingly difficult to get on here like I used to. Will try and visit more often now that the season is over.
     
  16. Dec 3, 2019 #3,196

    ATGM

    ATGM

    ATGM

    Forum Supporter TRF Supporter

    Joined:
    May 16, 2015
    Messages:
    719
    Likes Received:
    98
    As long as it's not bootleg hardware we are going to stand by our product.
     
  17. Dec 3, 2019 #3,197

    ATGM

    ATGM

    ATGM

    Forum Supporter TRF Supporter

    Joined:
    May 16, 2015
    Messages:
    719
    Likes Received:
    98
    Oh Hi Cory. Thanks for posting these pics!
     
  18. Dec 3, 2019 #3,198

    ATGM

    ATGM

    ATGM

    Forum Supporter TRF Supporter

    Joined:
    May 16, 2015
    Messages:
    719
    Likes Received:
    98
    We have heard that they are testing it at TMT this weekend! Should be available in January along with a handful of other loads.

    The M2200X has a shorter burn time but it uses a higher ISP propellant so it has a bit more power. It really jumps your rocket off of the pad.
     
  19. Dec 3, 2019 #3,199

    ATGM

    ATGM

    ATGM

    Forum Supporter TRF Supporter

    Joined:
    May 16, 2015
    Messages:
    719
    Likes Received:
    98
    The 75mm Stainless Steel Disc is in stock (P/N 75FSDSS) and we are looking at the 54mm next.
     
  20. Dec 3, 2019 #3,200

    ATGM

    ATGM

    ATGM

    Forum Supporter TRF Supporter

    Joined:
    May 16, 2015
    Messages:
    719
    Likes Received:
    98
    Took a little longer than expected but they are shipping now. There's one dealer who preordered them so he has them in stock.
     
  21. Dec 3, 2019 #3,201

    rharshberger

    rharshberger

    rharshberger

    Well-Known Member

    Joined:
    Oct 13, 2014
    Messages:
    8,684
    Likes Received:
    987
    Gender:
    Male
    Location:
    Pasco, WA
    Charlie, how about 38mm hardware, I am still waiting on replacements from a I59 cato back in April/May? I know you guys have been backlogged. Curiousity on my part as you guys have always made good on warranty stuff.
     
  22. Dec 3, 2019 #3,202

    ATGM

    ATGM

    ATGM

    Forum Supporter TRF Supporter

    Joined:
    May 16, 2015
    Messages:
    719
    Likes Received:
    98
    Hey Rich it looks like the end-burning closure is the hold up and those are being ran now.
     
    pcalviln likes this.
  23. Dec 4, 2019 #3,203

    rharshberger

    rharshberger

    rharshberger

    Well-Known Member

    Joined:
    Oct 13, 2014
    Messages:
    8,684
    Likes Received:
    987
    Gender:
    Male
    Location:
    Pasco, WA
    Thanks Charlie!
     
  24. Dec 4, 2019 #3,204

    KenRico

    KenRico

    KenRico

    'Just the Tip'

    Joined:
    May 31, 2011
    Messages:
    2,643
    Likes Received:
    34
    I saw some cool static test videos on the AT you toob channel !

    The J99 and the H238ST

    Kenny
     
  25. Dec 6, 2019 #3,205

    tOD

    tOD

    tOD

    Sinking in the quicksand of HPR TRF Supporter

    Joined:
    Jul 31, 2018
    Messages:
    344
    Likes Received:
    133
    Gender:
    Male
    Location:
    Pittsburgh, PA
    Thanks for the reply. The "K" motor flight is still in the future. So,with this motor just leave out the election charge and let the electronics handle the deployment?
     
  26. Dec 6, 2019 #3,206

    BF Rockets

    BF Rockets

    BF Rockets

    Well-Known Member

    Joined:
    Jul 19, 2018
    Messages:
    50
    Likes Received:
    18
    Bringing back the J99. Cool!
     
    brawl768 likes this.
  27. Dec 6, 2019 #3,207

    rcktnut

    rcktnut

    rcktnut

    Well-Known Member

    Joined:
    Oct 26, 2009
    Messages:
    1,513
    Likes Received:
    126
    Gender:
    Male
    Location:
    Sheboygan WI
    This thread, posts 3,133-3,153 Nothing wrong with your questions, just took your post # 3,205 as to blame Charlie for you missing out on the purchase of a case.
     
    Last edited: Dec 6, 2019
  28. Dec 6, 2019 #3,208

    jahall4

    jahall4

    jahall4

    Well-Known Member

    Joined:
    Jul 21, 2014
    Messages:
    1,007
    Likes Received:
    46
    In an effort to be constructive ... the AeroTech warranty statement is silent on the industry practice of replacing motor hardware damaged by a defective reload. So Charlie is not "to blame" as you put it. Ideally AT should update the RMS™ Reload Kits section of the warranty statement to clarify what AT will do when a defective reload, under warranty, damages any case authorized for use (e.g. Dr Rocket, CTI cross loads, etc…).
     
    bronicabill and Banzai88 like this.
  29. Dec 6, 2019 #3,209

    brawl768

    brawl768

    brawl768

    Member

    Joined:
    Jun 30, 2019
    Messages:
    5
    Likes Received:
    0
    Gender:
    Male
    Yeah, I'd love to fly a J99, or two (clustered) :cool:
     
  30. Dec 7, 2019 #3,210

    Rick Thome

    Rick Thome

    Rick Thome

    Member

    Joined:
    Nov 26, 2012
    Messages:
    8
    Likes Received:
    20


    As an Aerotech vendor, I have found their warranties to be very good. I have extra hardware and reloads to give out on the few times a warranty claim is in order. They have always sent me replacements with my next orders. Even though a good percentage of the time... the reload itself was not the problem... the assembly of the reload was. An O-ring assembled in wrong spot. Delay spacer installed on the charge well end, instead of the fuel grain end. Forward seal disk not properly seated in liner. Grains not bonded to the liner - needed on some reloads. Grain ends not fully glued/inhibited on larger moon burners. There has been a couple reloads that had cracked phenolic liners... these were discovered during the 'inspection' phase of the assembly. I replaced the liner then... both times. They both were successful flights. I'm pretty sure one was chipped during deburring the ends. This is why I check the grain fit first and only debur if needed. Have never needed to do so, and recommend caution.

    Rick
    Treasure Valley Rocketry
     
    ATGM, emckee, bronicabill and 3 others like this.

Share This Page

Group Builder