McHenry Forum - Crash Reconstruction & Simulation

We split off as a separate this topic since it relates to a couple of threads, in particular

• forum topic DeltaV/Accel at location other than CG?

In response to a question on one of our video on the Princess Diana crash a question came up on the relative Impact Speed change (DeltaVs) by location for an angled offset crash.

• The following was a response posted to our Princess Diana Crash reconstruction Thread. We created this msmac3D crash reconstruction video of an angled offset crash similar to the Princess Diana Crash:
  • Note this is also covered on forum topic Princess Diana Crash Reconstruction
  The msmac3D summary is as follows:

  

  summary1.jpg (23.38 KiB) Viewed 5234 times

  The chart of the msmac3D accelerations:

  

  acceleration traces.jpg (109.09 KiB) Viewed 5234 times

  and the summary of the smacthp DeltaVs from the msmac3D crash reconstruction:
  
  • Note that the msmac3D convention for X,Y,Z coordinates per the aeronautical sign convention (Z positive toward the earth!) (not cartesian (Z comin at you from your screen!)

  

  acceleration summaries.jpg (389.23 KiB) Viewed 5234 times