![]() Updated the motor data loader (fixed some bugs).This is a not-quite-complete (documentation lagging) update just because it has been a long time since all of the files were updated. This can be done manually, also, if needed. For Windows 95, the necessary registry entries are set during the installation process. For Windows 3.1, this association can be done manually through Program Manager. The ability to “associate” a *.RSP file and launch wRASP by double-clicking the *.RSP file and load that file in the process.Includes the four test cases in case some thinks the software has gone bad during a contest launch NAR tracking equations solver – equations from the “Pink Book” tracking system.This was an interim release for Dallas Area Rocket Society (DARS). The recommended location is as they are very good at maintaining a complete and up-to-date collection of motor data files. There are several places to obtain the thrust curves, assemble the data, and merge the results into a wRASP data file. The active rocketeers are interested in the most current motor data – especially when a batch of new motors are tested and declared certified by TRA or the NAR. However, most rocket folks are reluctant to do that. These files are just text files and the Rasp XP help files contain information about how to change them. Though the Rasp XP program itself does not change very often, the data files that Rasp XP uses are based on current motors and kits. Rasp XP v3.0 includes Larry Curcio’s DigiTrak, based on his version 5.4. New features were added by Kent Hoult in 1990 and Mark Johnson in 1990-94. It was converted to C by Mark Storin in 1989. Rasp XP is an adaption of the venerable RASP program for DOS that was based on the BASIC program by Harry Stine in 1979 from “Handbook of Model Rocketry”. It can be used to get an idea of how high a rocket kit might fly with a particular motor and what the best ejection delay time might be. Rasp XP is a Windows program that simulates the flight of a rocket in one dimension (one degree-of-freedom). A C++14 compiler (MSVC 2015 / g++5.0 / Clang 3.Rasp XP v3.0 – Rocket Altitude Simulation Program for Windows.*If the user supplies advanced propellant internal ballistics parameters such as Prandtl number, adiabatic flame temperature, and gas viscosity (calculated using OpenBurn's internal CE solver), OpenBurn will calculate erosive burning effects on the grain surface.Ĭompiling OpenBurn has the following dependencies:.An internal chemical equilibrium solver for shifting or frozen equilibrium, so the user can easilyĬalculate necessary propellant constants such as C*, rho, gamma, T0, Pr, and more.A 2D geometric-based regression model allowing for any arbitrary 2D grain shape.Animated cross section view of the motor burn. ![]() OpenBurn will additionally calculate thrust and total impulse for the motor using the isentropic flow models, accounting for two-phase flow, skin friction, and divergent shape losses in the nozzle expansion cone.Grain regression and chamber pressure are calculated for a steady-state chamber based on Saint Robert's law r = aP^n.Motor cross section (grain geometry and nozzle) updates in real time as you design.OpenBurn is intuitive and easy to use for designing any solid rocket motor. ![]() OpenBurn is based on C++/Qt5, and has support across all major platforms (Windows, OSX, Linux). ![]() OpenBurn is an open-source solid rocket engine simulation and design platform designed from the ground up for the amateur ![]()
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