Recent content by Sword7

Here is a link about more information... https://astrogeology.usgs.gov/groups/IAU-WGCCRE

Well, no one response my question. I now found IAU WGCCRE papers on USGS website that provides complete rotational element tables for all planets and satellites.

I am developing my own project called orbital flight simulator myself. I was looking for some IAU rotational model about all planets (Sol solar system) through the Internet and my books but was unable find any information. Does anyone have good books or information (tables and algorithms like...

Ok, thanks for some replies. I contacted MapleSoft and they offer Maple personal edition for $239 but does not offer MapleSim personal edition. I checked YouTube and learned that Maple is for word processor with math toolkit, etc. I will buy it for hobbyist use for documents soon. I will go...

I checked Maple, MATLAB and Mathematica websites and found personal/home editions for hobby use like 3D printer, robotics, etc.. and self-study. I now have a few questions for you. Does anyone have any good experiences with them? Which software support step-by-step solution display like...

Ok, I have strong background in Calculus. I am currently learning some about physics like gravity, etc. I did wrote a program to simulate orbit by using gravity formula. I received computer science degree when I graduated from college. Now I am interested in astrophysics and astronomy for my...

I am figuring out what are fields in Hippacros star catalogue because I am working on my own space simulator program much like Celestia and Orbiter. That data file is very new to me for my programming. Does anyone recommend any good books that teach about Hippacros for astrometrics and...

Hello folks, I found equation for g-force when I searched through google. Look at http://en.wikipedia.org/wiki/G-force" about equation of g-force for calculation. Tim

Hello folks, Does anyone know any formula about g-force measurement when launching into orbit? For example, 1 G at ground, 3-5 G during launching, 0 G at orbit. Thanks, Tim

Ok, thanks for some replies. I found a few books about golf physics on the Amazon.com and ordered them. Those called "Physics of Golf" and "Netwon on the Tee: A Good Walk Through the Science of Golf". I was looking for open-source golf simulator but can't find any source. Does anyone...

Hello folks, Does anyone have any information about golf simulation for math and physics formula by using Newton's gravity law and dynamics? I was searching for them through Internet but can't find any source. Does anyone know any open-source golf simulator? Thanks, Tim

Hello folks, I implemented class Vector into my C++ gravity simulation program that I recently started to write from scratch. I changed individual variables into Vector variable but gcc compiler refuse compile gravity formula with Vector. My original code was: Fgx = (G * M * m * Px) /...

Hello again, Good news! Huston, we finally got my spacecraft in orbit... I finally resolved a problem with my gravity calculation after I fixed my code. I corrected initial velocity setting from 14km/s to 7km/s and finally got spacecraft in orbit instead of runaway. That was elliptic...

Hello folks, I was researching some math software through the Internet. I learned something from Maplesoft.com about Maple Portal but for student edition only. It offers equation step by step solution for simplifing integral or complex equations into simple equations. It will help my skill...

Hello folks, I was shopping for some mathematics software like Mathematica and Mathlab, etc..? However, they are too expnesive for me (hobbyist use). However, they only offer Mathematica 7 Home Edition for affordable price. I was looking for some open-source software and found a few...