There was a download of VLAERO+ 2.2.17 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The most popular versions among the software users are 2.2 and 2.0.
VLAERO.exe is the most common filename for this program's installer. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The program lies within Education Tools, more precisely Science Tools. The actual developer of the program is Stark Aerospace, Inc Analytical Methods Division.
From the developer:
VLAERO+ is a planar vortex lattice method for the aerodynamic analysis of subsonic and supersonic aircraft configurations. With its own GUI, VLAERO+ is ideally suited for the preliminary design environment where it can be used to quickly produce loads, stability and control data.
You may want to check out more software, such as Panel, Avantage BPM Foundation or gitoolbox, which might be similar to VLAERO+.