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Old 02-12-2016, 06:50 PM   #69 (permalink)
aerohead
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smoke

Quote:
Originally Posted by freebeard View Post
One of the most instructive things to do in a wind tunnel is 'stuff the wake' by inserting the smoke wand behind the vehicle and letting it be pulled forward to the separation line.

It occurs to me that an Army smoke grenade would be perfect. aerohead has a story about setting one off on his surfboard. ...maybe a homemade variant with shorter duration?
My brother knows a Hollywood special-effects guy who told him about 'smoke-cookies' that are used in films.They come rated in CFM of smoke,50,000 cfm for instance.
Parachute demonstration teams use something like the smoke grenades during public exhibitions.
'Guess we could check online 'n see if it's legal to purchase this stuff.
Toxicity would also be something to check on.
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