• Here is a link to the full explanation: https://rollitup.org/t/welcome-back-did-you-try-turning-it-off-and-on-again.1104810/

Whats YOUR DREAM!!!

dvs1038

dvs1038

Well-Known Member
Ahhh ok gotcha ty, didn't think bout that part, anyone ever told u ur a pretty Fart Smeller Neer?
 
RyanTheRhino

RyanTheRhino

Well-Known Member
cannabineer said:
Air density. The terminal velocity (for something as aerodynamically awful as a human in a suit) you list assumes air dense enough to breathe comfortably. Thin the air, and terminal velocity goes up as the square root of it. At 31 km (20 miles) up, air density is a hundredth of the surface value, and the terminal velocity receives a tenfold increase, to an approximate 1200 mph. But Baumgartner (oh those wild&wacky Austrians!) didn't have enough vertical room to build to full terminal before the air got dense enough to slow him down.

By an altitude of 20 km (12 miles), the air density is up to 55 mbar from 10, and terminal is down to a decidedly subsonic 500mph.

Interestingly, I read many many years ago that Kittinger broke the sound barrier in his famous jump. But a web search suggests that whoever filled my adolescent head with those ideas ... was exaggerating. Such a bummer. He made it to about Mach .96 ... cn
Click to expand...
I actually want to write a function and plot it, would you know if there is a a known coefficient of drag for a human?



NVM found this
Ski jumper1.2 - 1.3
 
cannabineer

cannabineer

Ursus marijanus
greenswag said:
lol wouldn't that feel weird? slowing down as you fell further, complete mind fuck.
Click to expand...
I'm guessing you wouldn't feel it except as a very slight increase in perceived gravity. The thing about free fall (and all flight) is that one's sense of altitude has to be "trained in" as we learn what to use as scale objects. cn
 
RyanTheRhino

RyanTheRhino

Well-Known Member
Trolling said:
Well considering the main goal was the height and not speed, I'm sure they took that into consideration, doesn't change anything tho.
Click to expand...
I was referring to surviving a fall from a certain height.


I wonder if he could see the shock wave being pushed by his visor that would be bad ass
 
cannabineer

cannabineer

Ursus marijanus
RyanTheRhino said:
I was referring to surviving a fall from a certain height. I wonder if he could see the shock wave being pushed by his visor that would be bad ass
Click to expand...
Almost certainly not ... the air was too thin and dry. The only real way to visualize mild shock waves like that is by specialized photography (Schlieren) or by their effect on a nearby surface. cn
 
RyanTheRhino

RyanTheRhino

Well-Known Member
Well here you go guys i hope you enjoy it. The temperature change with altitude was not nice or even a real function for that matter. Everything was related to temperature, Pressure,density, ect .
Forced me to solve a bunch of 2nd order differential piecewise functions ;-)

The max speed for my estimate was about 400 m/s or 900mph

Not bad considering I took an average mass for a human and projected cross-section.

View attachment 2374735


You can see that initially he accelerated very fast reaching his max speed in only 15,000 meters in. after that the air begins to get dense and air resistance starts to take effect.

not perfect but its what I do when bored
 
april

april

Pickle Queen
My dream is to clone Carne, 20 yrs younger and straight..... hey i'm allowed to dream big :)
 
cannabineer

cannabineer

Ursus marijanus
Thank you for that, Ryan!

I encountered this during an earlier search ... the shapes are a bit different, but not hugely imo. cn

 
LegalizeDaBud

LegalizeDaBud

Member
To live in the Rocky Mountains in the middle of absolute no where.
BUT
To live in the highest potential of technological sustainability :D


Live and grow my way through the rest of my life..
 
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