Loud, helicopter like noise, with a little kick. on 2006 Nissan Altima

The best way I can describe the problem, is while I'm driving it sounds like a helicopter is above me... When I first heard the noise, I actually had to roll my window down and look overhead, when I realized it was my car making the noise and not a helicopter, I figured something was up.
The kick issue, happens only sometimes and it's more when I accelerate, or go up a little incline. It sounds like the engine jumped under the hood...
Car has approx. 140k +\- miles, if that makes a difference. Still runs like a beast though.

Thanks for the help.

Asked by for the 2006 Nissan Altima
If the helicopter is following you any time the car is in motion but not when stopped,, have the front hub bearings checked for the noise and a scan test to see if engine has a misfire for the "kick". Check engine light on or been on?
No, on the check engine light. I was told to check motor mounts for the kick.. Does that sound like a possibility? it was just a guess from a friend of a friend so who knows.
The helicopter is only when I am in motion....given, that it does seem to sound louder than the norm. when just idLed.
Really too many possibulities to do more guessing at it online. Probably your best choice is have a mechanic check it out hands-on.