Humm, that's a good point... I think the needle valve thing was based on the
assumption of a fixed-flow rate pump, but if the pump is controllable via
PWM, then we can adjust it pragmatically...
The other thing that occurs to me, the density of the smoke will be function
of the speed of the air into which it is inject. If it's controllable via
PWM, and the control module already knows airspeed from integrating the
Z-axis accel, then we can turn up the smoke volume as we go faster.
On Thu, Oct 7, 2010 at 2:14 PM, I wrote:
> Dave,
> There's a reason I wanted to roll our own... Model airplane smoke systems
> create billowing clouds of smoke by pumping smoke oil into the muffler.
> What we want is a tight stream of smoke, which is why I suggested a glow
> plug,
> a pump, and a needle valve. If we could get one of these as just the pump,
> it might work out with the rest of our parts...
>
>
>
> Quoting Dave Camarillo :
>
> So at one point we were talking about putting a smoke generator on the
>> rocket above the control surfaces so that we could see the aerodynamic
>> affects of the canards and fins. I came across a COTS smoke generator
>> online, it would be pretty cool if that were on board the rocket...
>>
>> http://www.horizonhobby.com/Products/Default.aspx?ProdID=SOT1261
>> or
>> http://www.horizonhobby.com/Products/Default.aspx?ProdID=SUL753
>>
>>
>
>
>
>
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