Download the RASAero II Software

 

The RASAero II Software is FREE!

To get the widest distribution of this software throughout the model rocket, high power rocket, amateur rocket, and alt.space/New Space communities, the RASAero II software is FREE! Download the RASAero II software by clicking on the link below.

Download the RASAero II Software
(RASAero II Version 1.0.1.0)

Current RASAero II software users, upgrading to RASAero II Version 1.0.1.0:

After downloading the software, unzip the zip file, and run RASAero II Setup Version 1.0.1.0 to install the software.

There is no need to uninstall any previous versions of the RASAero II software, just run RASAero II Setup Version 1.0.1.0 and select "Repair RasAero II" to install the new version of the software.

Your CDX1 rocket files can remain in the /My Documents/RASAero II directory. 

If you have edited the rasp.eng motor data file to add new motors, rename the old file or save the old file in a separate directory.  After installing the RASAero II Version 1.0.1.0 software add your new motors to the rasp.eng file which is located in the /My Documents/RASAero II directory.

The RASAero II Users Manual has been updated for the RASAero II Version 1.0.1.0 software.  The RASAero II Users Manual is not included in the software download, and is downloaded separately from the RASAero II Users Manual page.


RASAero software users, upgrading to RASAero II Version 1.0.1.0:

You can download and install RASAero II Version 1.0.1.0, while still leaving RASAero installed on your computer. The RASAero II software will show up on your desktop with a separate icon.

After downloading the software, unzip the zip file, and run RASAero II Setup Version 1.0.1.0 to install the software.

Your ALX1 rocket files can remain in the /My Documents/RASAero directory.  After you have installed the RASAero II software, you may wish to move your ALX1 rocket files to the location used by the RASAero II software which is the /My Documents/RASAero II directory.

If you have edited the rasp.eng motor data file to add new motors, rename the old file or save the old file in a separate directory.  After installing the RASAero II software add your new motors to the rasp.eng file which is located in the /My Documents/RASAero II directory.

The RASAero II Version 1.0.1.0 Users Manual is not included in the software download, and is downloaded separately from the RASAero II Users Manual page.

 
Note: The RASAero II software is compatible with Windows 7 (32-bit and 64-bit), Windows Vista (32-bit and 64-bit), Windows XP, Windows 2000, and Windows 98SE.

 
 
RASAero II release history:

Version 1.0.1.0 – Release Date August 5, 2016

Changed the recommended stability margin for subsonic Mach numbers to a stability margin of 1.0 calibers, kept the recommended stability margin for transonic and supersonic Mach numbers at 2.0 calibers, for the marginal stability warning message.

Added extension to power-on base drag model for very large nozzle exit diameters at supersonic and hypersonic Mach numbers, with the nozzle exit area filling a large portion of the rocket base area, for more accurate power-on drag coefficient (CD) predictions for first and second stages of satellite launch vehicles.

Added stability margin (calibers) to the Flight Simulation plots.

Added additional outputs to the Flight Simulation Excel (.CSV) output file.

Version 1.0.0.0 – Release Date September 12, 2015

Initial Release - New and improved models and capabilities compared to the RASAero software: