OpenVSP 3.4.0 Released

CST for everyone!

OpenVSP 3.4.0 comes with native support for Brenda Kulfan’s CST Airfoil representation. This is an oft-requested and long awaited feature by those doing aero optimization.

CST support is limited to the airfoil class (N1=0.5, N2=1.0) and is only available for Wing-type components for now.

CST airfoils can be promoted exactly or demoted to the closest possible approximation of reduced order. Existing VSP airfoils can be converted to CST using a least squares fit of a specified order.

Airfoils may now be modified via scale, shift, and rotate. These mods are used by the CST fitting to allow the CST curve to be defined on x=[0,1] with start/end at y=0.

These modifications will also allow some interesting alternative uses. With great power comes great responsibility. Do not use these mods to achieve wing shapes possible through ‘normal’ parameters — you will come to regret it.


  • CST Airfoil class support
  • Airfoil scale, shift, rotate modifications
  • Promote/demote CST airfoils
  • Best least squares CST conversion of existing airfoil types
  • Extend API to support CST airfoils

Bug fixes:

  • Write 1/0 Type parameter for *.hrm files
  • Modify SuperBuild to auto-build *.zip package every time

One thought on “OpenVSP 3.4.0 Released

  1. Anyway to figure out how to zoom and adjust the size of individual shapes without having to join social communist media google everything track my every move, take a picture of my food at every restaurant, commenting how bad it is, needing to know where everyone is going, which I don’t care about other lack of intelligence, media? Just saying, it appears that word press is designed for forums and takes 30 seconds to setup without the impossibilities of the user experience of this website?