Aircraft Question

 AIRCRAFT QUESTION

As clever as you might be, I’ll be surprised if you actually get this right but you will get it once you see the  answer.

They say it is common sense but here is a Clue: Just remember that a helicopter's blade (in cross-section) is shaped like an airplane's wing, and both catch air giving  lift. 

Now answer the question…. This should be an easy quiz for those who have even a modicum of knowledge about aircraft.  However, the answer may surprise you.

The Question:

  "What is the primary advantage of rotary winged aircraft

over fixed-winged aircraft?"

I got it wrong, too!

Bugger it!

Well, yes, but I wouldn't mind standing behind her if she were wearing the same output standing close behind a prop-driven plane with the engine running...