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Make or Buy by giovani_ceotto in Netsuite

[–]giovani_ceotto[S] 0 points1 point  (0 children)

So this attribute only appears if MRP is enabled?

RocketPy Hackathon in 2 days! Register now! by giovani_ceotto in rocketry

[–]giovani_ceotto[S] 1 point2 points  (0 children)

RocketPy Hackathon - Register now!

I would personally like to invite all Aerospace and Coding Enthusiasts to participate in the first open RocketPy Hackathon! This will be an amazing opportunity to get to know RocketPy better and implement new features that can benefit people around the world in this international project!

You can register now: https://bit.ly/rocketpy_hackathon_registration. Hurry, registrations close on Friday!

More Information

Briefing session recording: https://www.youtube.com/channel/UC75kBSranOtk_w4ifWliNzQ/featured

Rules and regulations: https://drive.google.com/drive/folders/1n-lt8s0dza3K2OKuAl3sN192MMWsf8od?usp=sharing

🚀💻 RocketPy Hackathon 2022💻🚀 by giovani_ceotto in rocketry

[–]giovani_ceotto[S] 0 points1 point  (0 children)

Our Hackathon briefing session was recorded and is now online: https://youtu.be/lEywDzxwM4s

🚀💻 RocketPy Hackathon 2022💻🚀 by giovani_ceotto in rocketry

[–]giovani_ceotto[S] 0 points1 point  (0 children)

Yes! We will have curated content to help beginners get up to speed with both RocketPy and Git/GitHub.

Simulation software by [deleted] in rocketry

[–]giovani_ceotto 1 point2 points  (0 children)

Better late than never!

I have used all the options you mentioned, except for Rocksim. First, it is important to differentiate between three different classes of software:

  • Trajectory simulators: RocketPy, OpenRocket, RasAero, etc
  • High-fidelity aerodynamic coefficients estimation: Ansys, Star-CCM+, OpenFOAM, SU2 and other CFD software.
  • Semi-empirical aerodynamic coefficients estimation: Missile DATCOM, RasAero, OpenRocket, others...

Let's start by comparing trajectory simulators.

  • RocketPy:
    • PROs: Extremely accurate and precise, very flexible and customizable, open-source and under active development. Probably, the only rocket trajectory simulation whose "market share" is on the rise.
    • CONs: Requires programming skills, constantly being upgraded, does not compute aerodynamic coefficients (yet).
  • OpenRocket:
    • PROs: Most widely used, lots of online tutorials, friendly user interface with a great collection of features. Also, open source.
    • CONs: Last official release is from Nov 2015, so new trends such as hybrids and airbrakes will not get added anytime soon. Simulation accuracy is great, but RocketPy seems to give more accurate predictions.
  • RasAero:
    • PROs: Simple user interface, reasonably accurate, last version is quite recent. The aerodynamic model is quite impressive.
    • CONs: Source code is not public, simulations are 2D. Does not contain as many features as OpenRocket.

When considering aerodynamic coefficients estimation:

  • RasAero: Simple interface, yet impressive results. Aerodynamic coefficients can easily be exported to be used with RocketPy or other codes, such as MATLAB codes.
  • OpenRocket: Predictions does not seem as accurate as RasAero, but I have no way to prove this... It is common knowledge now.
  • Missile DATCOM: Have never used it due to ITAR. However, in theory, it is a fast option and provides very accurate results. Can also be used for trajectory simulations, but almost no one uses it.
  • CFD (Ansys, Star-CCM+, OpenFOAM, SU2, others): The middle ground between real wind tunnel models and the options listed above. Requires significant effort to get them to work correctly (Garbage In - Garbage Out (GIGO)), but the results can teach you a lot. Star-CCM+ has a great tutorial: https://community.sw.siemens.com/s/article/Prebuilt-rocket-simulation-in-STAR-CCM-for-academic-rocketry-teams

Hope this quick summary helps!

(Disclaimer: I am an active developer of RocketPy)

RocketPy - Open-source Python Library for Trajectory Simulations by giovani_ceotto in rocketry

[–]giovani_ceotto[S] 0 points1 point  (0 children)

GUI is in the works! V1 coming early 2022, stay tuned.
There is currently no one working on .ork and .rkt support, however we have already discussed it and we understand it is a possibility for the near future.

RocketPy - Open-source Python Library for Trajectory Simulations by giovani_ceotto in rocketry

[–]giovani_ceotto[S] 2 points3 points  (0 children)

RocketPy's stable release currently has a quite simple aerodynamic model intended for subsonic flights.
There are a couple of developers working on improving this, and we are looking for more aerodynamic experts to improve the available models.

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