Search results

The Rocketry Forum

Help Support The Rocketry Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
  1. Solomoriah

    Estes - Mosquito (TK-1 or #0801) Gallery

    Not sure what to think about "more normal" :D but I really do appreciate the kind words. Thank you sir! I hope your "Big Brother" turns in as many excellent flights as the Mo' Skeeter has... 16 so far, still wearing the original paint (but with a few battle scars).
  2. Solomoriah

    Rocket Shopping in/near Kansas City MO

    Hey, so I'm going to be in Kansas City, MO for the first time since you-know-what this Saturday. I'm needing to pick up some parts, maybe decals if I can find anything appropriate, and so I need to know what hobby shops in the KCMO area have any interesting inventory. Hoping a local will see...
  3. Solomoriah

    Centuri - Vulcan (KA-10 or #5010) Gallery

    Ah, MoreRockets. The vendor who blocked me from their website... wonder if that block is still in place?
  4. Solomoriah

    Centuri - Nomad (KB-5 or #5035) Gallery

    It's a styling thing. The original Centuri rocket had them.
  5. Solomoriah

    Centuri - (The) Point (KC-13 or #5073) Gallery

    Um... ouch. Haven't launched mine yet, but I was already concerned about that.
  6. Solomoriah

    The Understated Estes Alpha.

    Actually, I seem to recall a YORF conversation about the Alpha II. Seems they were made for educational use; the engine tube was elongated and used as the anchor point for the shock cord. Also, the die-cut Alpha II fins had dots punched to indicate the root edge. Anyway that's the story as I...
  7. Solomoriah

    Estes - Big Daddy (#2162) Gallery

    Converting to 4x18mm results in no deployment issues, and plenty of oomph to get it off the rod (with 4xC6 engines, of course). Just sayin'. :D
  8. Solomoriah

    Estes - Big Daddy (#2162) Gallery

    Nice paint job!
  9. Solomoriah

    Estes - Der Red Max (KC-2 or #0651) Gallery

    Too bad about the Max... but that is an AMAZING photo of it failing!
  10. Solomoriah

    LPR Kevlar retrofit

    I use thin wire picked up at the dollar store to feed Kevlar through centering rings, or through the paperclip anchors I use in some of my rockets. I need to post pictures of those anchors, actually...
  11. Solomoriah

    OpenRocket: Someone Please Explain Engines...

    Okay, so you have to look at a different tab to figure out which curve you have. That's useful information. Lemme go try it... ... ah, so. I see how it works. The red curves for the B4 and C6 engines have their provenance given: Estes B4 RASP.ENG file made from NAR published data File...
  12. Solomoriah

    OpenRocket: Someone Please Explain Engines...

    The bug report is somewhat tangential to my issue, and honestly I'm not sure how to fix it. Probably because I have NO IDEA what "red" and "blue" means... so I don't know how to describe how it OUGHT to work.
  13. Solomoriah

    OpenRocket: Someone Please Explain Engines...

    So I guess it's a user interface problem. There should be something more than color to distinguish these. It'd be nice to know where the curve is coming from in each case.
  14. Solomoriah

    Unnusual fin design question.

    As I understand it, OpenRocket uses a version of the Barrowman equations to figure stability. Drag is considered only as it affects altitude, not as it affects stability. I might be wrong, but I don't think either OpenRocket or Rocksim can properly indicate the stability of a rocket stabilized...
  15. Solomoriah

    OpenRocket: Someone Please Explain Engines...

    I was hoping to hear where those curves came from. You've given me half the answer, anyway. Surely it's documented somewhere?
  16. Solomoriah

    OpenRocket: Someone Please Explain Engines...

    I've noticed in recent versions of OR that, on the "Select a rocket motor" dialog, there are sometimes engines that have multiple thrust curves. For instance, the Estes B4 engines have one that is red, and one that is blue. So where is it documented which engines have which curve??? That is...
  17. Solomoriah

    Unnusual fin design question.

    (In other words, you've got to build it and test it to find out.)
  18. Solomoriah

    Unnusual fin design question.

    You don't understand. OpenRocket does not know how to figure stability when you are using drag. It will consider a cone that flares out as improving the stability only based on the Barrowman effects, but will not take base drag into account. There is no way to simulate your design with any...
  19. Solomoriah

    Unnusual fin design question.

    AH. You are confused, I'm afraid. He's talking about a disc at the rear (like half a spool rocket). The design he shows is as close as he could figure out in OpenRocket; the OP expected that OpenRocket could give him guidance on the stability of the design, but it can't (as I pointed out)...
  20. Solomoriah

    Unnusual fin design question.

    Glen, I've never seen a failure like that. I suppose it would depend on the disc material, but even a C engine wouldn't hit all that hard.
Back
Top