Pages

Friday 30 July 2010

Video: Helicopter Orientation - Introduction To Helicopters (1958)

1 comment:

rhhardin said...

People are used to a push on something changing where the something is.

In fact, though, a push changes the velocity of that something, not where it is.

The velocity changes where it is at a later time.

In a helicopter rotor, the later time that's noticed is 90 degrees later.

It's one of the places in real life where the difference matters.

Gyroscopes in general share that.