Sir:
The tool you want is the excel-based "Static Port Hole Calculator" by Gary
Stroick. It is available online at Off We Go Rocketry.
Bill
On Mon, Apr 10, 2023 at 11:46 AM Raum S <Rocketry101@xxxxxxxxxxx> wrote:
Hi,
After having a failure on the primary ejection charge because the hole was
too big (back up charge worked). I started to search the web for a vent
hole calculator (not av bay). But I couldn't find one. Does anyone have a
formula or calculator for this? The body tube is 610mm tall, 98mm in
diameter and the hole size was 6mm (24', 4' and 1/4' roughly).
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