More of that "I have made assumptions that I will not bother to explain because it would bore you to death".The molecules outside are also zipping around at the speed of sound. What's your point?
LOL, I've got a post on here somewhere about passengers jumping up and down to get the wings to flap like a bird. Case closed.Ok let me explain this to you. Lift comes from passenger fear, the more scared the passengers are the harder they lift up on the armrests therefore lifting the airplane. the engines are there to make noise which makes the passengers more scared so they lift harder on the armrests.
In post #118 you said "The air in a milk carton isn't static. The molecules are bouncing off each other and the carton at the speed of sound of those molecules"Some of these discussion points are surreal without a solid engineering science background.*
* from post above
Might be near horizontal at the trailing edge. The overall air mass under a hovering helicopter is definitely vertically down.All of the momentum added to the air by the passage of the glider is horizontal. The weight of the glider is transferred to the floor by pressure not momentum.
Oops, replace "all of the" with "The net" and we're good. Stand a few feet outboard of a hovering helicopter with a smoke bomb and see where the smoke goes. It goes up and rotates. Some of it even goes back into the top of the rotor. All of the downwash of a wing ends up in the tip vortices because the downwash is what makes the vortices.Might be near horizontal at the trailing edge. The overall air mass under a hovering helicopter is definitely vertically down.
I can understand the Canary Scenario. But I have never been able to resolve the following. Perhaps someone with one of those modern quad copters and a good camera system could film the results........
DEAL with this mystery... and have fun flying!
Having said-that, here is an old engineering question to chew-over...
The canary's in-a-truck scenario**.
**or what ever small bird suits your fancy... and let's forget the obvious cruelty part of this question...
It seems the opposite would be true, like dynamic pressure. Can you explain why pressure would decrease?Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in static pressure or a decrease in the fluid's potential energy.
That statement is from the internet where everything is known to be true. The URL and page contents are copied below. I see your point and am working on an answer but I am not sure I am clear on your question. See bold print [I modified] below. Are you referring to theIt seems the opposite would be true, like dynamic pressure. Can you explain why pressure would decrease?