A380 Vmu Flight Demo
(Visual Mininim Unstick Speed)


Demo Flight (Link video 3.0 mb)

 

It brings a whole new meaning to Tail Dragger! Certification: it's called the Vmu demonstration.  Most non-pilots have never seen this test.

 

During the takeoff roll the pilot rotates the aircraft nose up at well below normal V1 rotation speed. The aircraft is not yet ready to fly so at the high angle of attack the tail hits the runway and drags along until the aircraft obtains sufficient speed to fly itself off the ground.

 

The tail strike is a required certification test where the pilot hits the tail of the aircraft on the runway on purpose and then flies it off the runway showing that it can fly off after the runway scrape.  Most aircraft have a skid placed on the tail where it is going to hit to minimize any damage to the tail, but the Airbus has a metal extension to keep any damage to the tail structure.

 

Two things to notice: Just how big this aircraft is!!!! And, as the aircraft rotates and you can see the elevators, the engine thrust is bouncing off the runway causing the elevators to flap up and down. The elevators on this plane are probably bigger than most planes wings.