Huey Part 1

Because the original Huey has a two blade rotor, it sounds different than a copter with three or more blades. I noticed a couple of things about the sound in this video. On startup it seems like the engine is reaching a fever pitch before the rotor blades even begin to move. Then, on approach you can hear the beat of the rotors and the whine of the turbine as distinct sounds. Just after the copter passes by the engine sounds more like the growl of a large piston engine. Lastly, you can hear the rotor from a long way away, much farther than you can hear the turbine. Part 2 here.