Radial Forces are very important for US. We can recognize difference (Planet or Rocket )
(https://overunityarchives.com/proxy.php?request=http%3A%2F%2F1.bp.blogspot.com%2F-jIKPBonOu-Q%2FVAgKnhFHZKI%2FAAAAAAAAB8M%2FOMrX6H91ULg%2Fs1600%2F12.gif&hash=22ccc5b1903869df133ea7a94f25e7543b0d844a)
Above picture was inspiration to very controversial for classical mechanic engine
(https://overunityarchives.com/proxy.php?request=http%3A%2F%2F3.bp.blogspot.com%2F-jXEn991hIh0%2FVAgmOMpL9AI%2FAAAAAAAAB8Y%2Fv9042guM7yk%2Fs1600%2FCIMG3300.JPG&hash=88c1e374dc80eec66a7e9346fbda0d3533d72e12)
En > http://youtu.be/UvcmKNZ8u8I
PL > http://youtu.be/T6JXKmbqP9U
BR Maciej Marosz
Engineer and Inventor
http://tesla4.blogspot.com