[AR] Re: Estimating Coefficient of Discharge (Cd)
- From: David Weinshenker <daze39@xxxxxxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Sat, 13 Sep 2014 13:39:41 -0700
Graham Sortino (Redacted sender gnsortino@xxxxxxxxx for DMARC) wrote:
> Apologies... yes that was a typo. The orifice diameters are 0.023 and
> 0.035 respectively.
Ah - how did you measure the diameters then? I'd be even more inclined
to suspect either or both of my previous suspicions, with such small
diameters... small burrs etc. can make a significant difference, and
there's the question of how exactly one has achieved the design diameter
in actual practice.
Were these tests done with single holes or with arrays of similar holes?
-dave w
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