sunsite.unc.edu/pub/archives/rec.models.rockets/CYBERROC now contains a new version of VCP, in file VCP164.ZIP. VCP is a CP/CG stability calculator for Windows. Its spreadsheet style operation permits easy quick looks at what-if tradeoffs when designing rockets, and its graphic display ensures data entry accuracy. VCP Features: * Easy Windows data entry and editing of dimensions of any component. CP/CG's are automatically recalculated with any data change. * Graphic screen view of entered rocket verifies data entry - what you see is what you've entered. * Directly view the effects of varying fin sizes with the Fin Scale tool. * Vary the size of the entire rocket with the Vehicle Scale tool. * Automatically calculate required nose weight for specified stability margin. * Multi-stage CP/CG's are all calculated and displayed simultaneously. * Windows help file with context sensitive help. * Flexible display and data entry units. Mix units systems; directly enter measurements in fractional inches. * File save/load of rocket CP/CG data. Group CP files into libraries. * Stability report printout - perfect for range safety check-in. * Verified accurate implementation of the Barrowman equations. 'Extended' mode adds new shapes and capabilities beyond the standard Barrowman methods. * Included libraries of CP files contain over 80 examples of kits and full-size vehicles from RotW data. * Help file includes extensive Barrowman data bibliography. * New versions run up to five times faster than earlier 1.5x versions. * Print full-size profiles of all components. * Print construction tools: Fin Alignment Guide, Fin Position Wrapper, Shroud Template. * Freeware - please copy like crazy! Unzip into a temp directory or floppy and run setup.exe. There are still a rew rough edges: - The help file still has quite a few incomplete areas. - There are many functions visible in the menus that are not yet implemented. - There are lots of major features still planned. GC