May 23, 2019
the other night while lying in bed I felt more than heard this buffeting of air through my window. I could actually feel the air hit my face while at the same time I could hear but very faintly the sound of helicopter rotors. This wasn't the local hospital chopper. It must have been way up there. Also there was no wind, the night air was still. Is there a big military chopper that could be the cause? And in the news last week was the story of high up balloons being used to monitor traffic on highways. Maybe looking for persons of interest? I don't know but "a balloon"? A balloon is gonna go with the wind so how would that work? Would you use a chopper in conjunction with the balloon? Anyway it was really strange to actually feel the buffeting of air hit my face from such a distant sound.
August 7, 2019
Two helicopters come to mind. CH-47 Chinook is a two rotor known as a flying school bus. Heavy lifting as well as troop transports. Second would be the HH-53 which is used by Navy Marines and low key by the Air Force. Multi role is a good description and it it a big machine. Three jet turbines power its 5 main rotor blades. Go to You Tube and look up the two birds. Should be videos where you can listen to the sounds of both. If you were feeling rotor wash, that’s low.