Quantcast

openrocket

The Rocketry Forum

Help Support The Rocketry Forum:

  1. JohnCoker

    ThrustCurve.org API coming back

    I have made progress on the API. The "compatible" and new-style endpoints for metadata, search and download are working. This should enable RockSim and OpenRocket to download data again. If anyone else has programs that query and download data from ThrustCurve.org, they should be working as...
  2. A

    Issues with OpenRocket

    Hello, recently I have been trying to open OpenRocket but have consistently run into issues where I would select any dropdown boxes and the entire program would freak out graphically. I have tried uninstalling and reinstalling Java as well as attempting to reinstall OpenRocket itself. I am...
  3. Kelly

    OpenRocket: How to ignore stability issues?

    I'm simming a short/stubby rocket with lots of base drag. To get an idea of stability, I add a massless transition cone at the tail as recommended elsewhere, and I get a stable rocket. To sim the altitude, I remove the transition. However now OpenRocket is telling me that the rocket...
  4. T

    Freefall in openrocket

    Hi, is there any way to simulate free fall / drop test from a certain altitude to landing point? Thanks.
  5. T

    Air launch in OpenRocket?

    Hi, basically, how do you simulate air launches in OpenRocket? Thanks.
  6. itb7

    OpenRocket center of Mass

    Hello everybody, I'm pretty new here, and looking for some advice on using OpenRocket to run a sim of a custom motor. I'm not certain how OpenRocket is supposed to do this, but I'd like to control the center of gravity for the motor, which will change for the first couple seconds of flight as...
  7. Alan R

    LOC 4" Micro-Magg .ork file

    I needed to sim some motors, and I couldn't find the 4" Magg file anywhere. This is down-scaled from the widely-available 5.5" Mini Magg. Most components from the DB. Some measurements are from my own rocket. The rest are just a guess. Posted here cause someone else might want this someday.
  8. T

    Wrong Size fo M2020

    Hello, me and my team are preparing for a rocket competition. We were given 2 engine options for us to use in our rocket. First choice is M2150 and second choice is M2020. We have to draw rockets in for 2 options. No problem for M2150. But the dimensions of the M2020 are incorrectly given in...
  9. N

    Automating OpenRocket Simulations

    Hi all, I am trying to find a way to automate OpenRocket to run many simulations sequentially, changing some variables between iterations. I.e. Start with a rocket setup, then run 500 simulations increasing the outside temperature 0.05 degC each iteration. Some ideas were interfacing with...
  10. Miles Goodson

    Open rocket stability number?

    Hi all, I just got Open Rocket to simulate an F powered rocket that I'm building, and for some reason, I can't get the stability number past 0.6! I've tried everything. Any ideas on what to fix?
  11. turkkusuroket

    High speed for lounchrod out

    Hi friends. I have a problem. I need speed of 25 m/s for lounchrod but my design speed is 32 m/s. If I increase mass, altitude is falling. How can reduce the lounchrod speed? Thanks friends:(
  12. neil_w

    How to ask an OpenRocket support question (or any other support question for that matter)

    I don't know is anyone will read this but I can only hope. Please note this is not directed at anyone in particular; it's a result of seeing the same pattern repeat over and over here and elsewhere. When asking for support with OpenRocket, or any other program for that matter, you need to...
  13. turkkusuroket

    I need to help for error.

    Hi everyone. I build a rocket in Open Rocket. I have a problem when run simulation. I uptaded .org file and a picture that shown error message. What is the solution of the error? Thanks
  14. turkkusuroket

    High Speed Error

    When we do the simulation, it gives warning that the parachute is opened at high speed. However, the parachute opens at the apogee point where the velocity of the rocket is 0 m / s. When we examine the graph, we see that the velocity at the opening point of the parachute is -0.5 m / s. However...
  15. B

    Open Rocket 15.03 Ubuntu High Dpi Problem

    Hi everyone. I'm currently using Ubuntu 18.04 LTS on Huawei Matebook 13 QHD display and having "so tiny user interface" problem on Open Rocket 15.03. I've googled it and got nothing about how to fix it on Ubuntu. Do you have any suggestions? It's getting more annoying that I'm having the same...
  16. Co-leader of the LRP

    My Design Thread

    Hello! This is a thread where I'll be posting my designs for rockets, some which may eventually get built. Please feel free to make any sort of comments on my designs, i would appreciate the input. Also, this thread is inspired by neil_w's half-baked design thread
  17. J

    OpenRocket Linux AppImage -- Beta testers?

    Since the default Java implementation on Linux machines has moved on past Java 8, I've created an AppImage that should allow you to keep using the current release. I'd like to invite anyone who would like to Beta test it to give it a spin by downloading from...
  18. RocketEnthusiast101

    Need help regarding OpenRocketv15.03 execution

    hi. I'm facing an execution issue regarding open rocket software. I have the latest java software. However whenever I download open rocket-15.03 from their website. It downloads the file in WinRAR format in my download section. To try to fix this issue I tried using the notepad method (basically...
  19. Co-leader of the LRP

    Can you get info on how far a rocket will drift in OpenRocket?

    I know you can get that information in Rocksim, but can you get information on how far a rocket will drift in OpenRocket? If so, please let me know how to do it. Thanks!
  20. F

    TARC Questions

    Hi everyone, I'm leading a TARC team for the first time this year and I had a few questions. 1. We are using OpenRocket to model the rocket and everything looks fine but the flight time looks a little unrealistic. We are using two body tubes and the weight of the rocket is around 300g right...
Top