Awesome prop tip contrails

After installing two of the newest Pratt & Whitney R-985's built in recent times (all factory new old stock parts that have never been run before except for the crank shaft) we did a test run in the morning. Check out the prop tip vortices created by the early morning cold air condensing as the pressure changes at the tips of the propellers.

This video was shot by Steve and notice that he walks around to the other side with the sun at his back and you cannot see the vortices. They are only visible with the sun at a certain angle.

Another beautiful day in Switzerland!

• Catégorie

  • Auto/Moto

• Licence

  • Licence YouTube standard