It is possible to use RTDynamics v3 and RTDynamics v4 on the same computer, but setting the environment variable RTDYNAMICS_LICENSE to point to a different license file each time is tedious. v4 introduces a new environment variable called RTDYNAMICS_LICENSE_FILE_V4 which makes it unnecessary to change environment variable RTDYNAMICS_LICENSE.
Simply set the environment variable RTDYNAMICS_LICENSE to point to the license file which you have received for your RTDynamics v3 (or RotorLib FDM for MATLAB/Simulink v3) download.
And
Set the environment variable RTDYNAMICS_LICENSE_V4 to point to the license file which you have received for your RTDynamics v4 download.
Our white-papers are a great way to get detailed technical information about RotorLib and FixedWingLib product lines. We have just updated the white-papers to include the new features from the new version 4. You can download the new whitepapers here: RotorLib FDM Whitepaper RotorLib CGF Whitepaper and FixedWingLib FDM Whitepaper.
If you have downloaded any CHM help files from the internet, the help pages may be displayed blank by the help viewer. Fixing this problem is easy:
- Browse to the folder where the chm file is located with Windows Explorer
- Select the file with the right mouse button
- Select Properties from the context mouse menu
- Click “Unblock” in the “General” tab
Often, RotorLib and FixedWingLib developers use OpenSceneGraph for their visualization applications. Below we have summarized a few points which are useful for OSG integrations. read more…
We have just released a new version of RotorLib for MATLAB and Simulink. This release adds:
- A new version of the RotorLib FDM Simulink block which adds new output ports for main and tail rotor induced velocities
- A WCS to BCS Simulink block which can be used to convert a vector in WCS frame to a vector in BCS.
- A MATLAB function called rlSetWindVelocity which allows specifying a constant wind acting on a helicopter.
- and a bug fix to the License Tool.
Click this link to download your evaluation copy.
RTDynamics Simulation Library introduced a new feature that allows developers to save and load the physical state of a simulation entity (vehicles and bots). Developers can get a state snapshot at any moment during the simulation. The state snapshot can be in a binary or human-readable text format.
State snapshots can be:
- saved to files, loaded from files
- transmitted over network
- transmitted over shared memory
The feature is used for several purposes:
- saving and loading scenarios
- comparison of vehicle/virtual bot configuration differences (see video)
- model development/debugging
All RTDynamics products take advantage of this new feature.
The feature is available in version 3.1.1 of the RTDynamics simulation library. As usual, customers who have maintenance can download and use the new version without any extra costs.
We have just released a new version of RotorLib FDM for MATLAB. This release contains bug fixes and improvements to our fast general purpose helicopter trim solver (the rlTrimHeli function). We also added a new trim example and two new output ports to the Simulink block to publish main and tail rotor power and rpm values from the simulation.
If you are using MATLAB or Simulink, you can click this link to download your evaluation copy.
We are pleased to announce the first non-beta release of our new product RotorLib FDM for MATLAB. As the name implies, it is our high fidelity helicopter flight dynamics model (RotorLib FDM) for MATLAB. If you are using MATLAB or Simulink, you can click this link to download your evaluation copy.
With RotorLib FDM for MATLAB, now it becomes one step easier to build control system and auto pilot laws to control helicopters. The Simulink block library provides a drag-and-drop block which simulates a generic helicopter. This block is a great tool for all helicopter flight dynamics students and control system engineers who are looking for a good helicopter dynamics model for their studies. A fast trim finder and examples including linearization and attitude control are available.
This error may be result of a Visual Studio C/C++ runtime DLL incompatibility, Release 3.x of RTDynamics Simulation Platform is built with MS Visual Studio 2005 Service Pack 1 with Security Update KB971090. This update upgrades the Visual C++ runtime from 8.0.50727.762 to 8.0.50727.4053. The error is due to the debug C++ runtimes missing in your Visual Studio installation.
Please use Windows Update to make sure your Visual C++ 2005 receives the Security Update. After the update, Windows will be able to find the version 8.0.50727.4053 of the msvcr80.dll and msvcp80.dll.
The following screenshot shows the Visual Studio version information from our build computer. Notice the selected update. Please note that Visual Studio shows the version number 8.0.50727.762 incorrectly on the upper left summary area.
Visual Studio 2005 with Security Updates
