This one was a long time in coming. I just released a new version of the calculator with a long list of changes and improvements. Highlights:

• Huge update on the component database. There are now over 8,000 preloaded components (airplanes, motors, etc). While I was at it, I cleaned up the component database. Many components of questionable quality have been removed from the combined database.
• Recomputed airfoil database. This one took a year of number crunching. Look for smoother lines in most of the charts and more accurate results throughout. You see, the airfoil calculations are at the core of most of the calculator’s fast results.
• Data is now being served from a global server cloud. What this means is that regardless of where in the world you are located, the calculator will load without delay. This change obsoleted the old United States or Europe data server location setting, so it has been removed.
• The tutorials are now also being distributed through this global server cloud.
• New support for Spanish! The calculator will try and pick up the language setting from your operating system and web browser. You can also just use the drop down dialog box in the Admin tab. Not all of the text has been translated, but most of it has.
• Adobe Flash 10 incorporates a new security model to protect your computer from malicious attacks. Unfortunately, it also broke some functionality in good applications (like my calculator). The main difference is that the user data autosave couldn’t work anymore. Regrettably, I’ve removed this feature. Be sure and hit the Save Data button in the Admin tab.