We called it dynamic similitude. Mass length time of one scale = Mass
length time of another scale or system... As said was a cool way to
determine effects...
mayf
On 4/19/2011 5:58 PM, Joe & Lynne Lance wrote:
> An interesting experiment---but I remember a neater one when Don Drawbaugh,
> a NERVA mathematician came to our Electrical Space Propulsion Lab to do a
> similitude experiment demonstrating how a gaseous core nuclear rocket engine
> would work.
>
> Don made a flattened cylindrical rocket chamber and an attached nozzle out
> of clear plexiglass and used water to simulate gaseous hydrogen. He then
> injected food coloring (representing gaseous fissile material) into the
> central core of the swirling water. The glob of food coloring stayed firmly
> in place, no mixing, no tendrils at all, and none of the food coloring
> leaked out thru the nozzle.
>
> Even old Burridge Jennings was impressed.
>
> Always liked similitude analyses and experiments.
>
>
> Lance
>
>
> -----Original Message-----
> From: land-speed-bounces@autox.team.net
> [mailto:land-speed-bounces@autox.team.net] On Behalf Of jgmagoo@comcast.net
> Sent: Tuesday, April 19, 2011 3:41 PM
> To: land-speed-digest
> Subject: [Land-speed] Laminar Flow& Reverse Laminar Flow>From>JG Magoo
>
> Since some of you whiz kids in the LSR community sometimes talk about
> 'laminar
> flow', I thought some of you might find this interesting.
>
>
> http://www.wimp.com/reversedlaminar/
>
>
> I have no idea how this might apply to Land Speed Racing...... but who
> knows,
> B maybe some of you may find an application.
>
>
>
> JG
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