Airflow at ground level versus airflow at 30000ft
Please excuse any incorrect terminology!
I'm filming the effects of an explosive decompression, by blowing a hole in a parked pressurised aircraft, a similar stunt to what the USA TV show The Mythbusters did.
I have been pondering trying to simulate (partially at least) the effects that airflow over the fuselage would have on the debris from the explosion.
Th idea is to illustrate that debris from an explosion can be blown/travel down the fuselage and could make contact with control surfaces or engines.
This aspect of the test is not scientific (!) but it would help the viewer understand that debris from an otherwise non catastrophic explosion could damage rudder or engines.
To put you in the picture we have available a 300hp special effects wind machine with 2 x 3ft feet long blades and Im wondering if this was positioned 15 feet form the blast how this would compare to wind forces of a commercial jet in flight.
My question; is it true that the volume and force of air across a fuselage at say 600 knots at 30000ft is similar to the forces at lower speeds and lower altitudes?
If the wind machine can generate say 120 knots at ground level what is this pressure or force (?) equivalent too at 20,000ft or 30,000 ft?
I realise that the wind speed will decrease with distance from the wind machine, thats about the only law of thermodynamics I think I know.
thanks!
Mickjoebill