03-04-2006, 07:21 PM
|
 |
BARCLONE Rocketry
|
|
Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
|
|
Craig has been tweaking it... 
Quote:
|
Originally Posted by CPMcGraw
Almost 2900' on an F39... I need to tweak the delay times a bit from the original motor list before I turn it loose...
|
I did have to add a "few" items to the parts list, James. Hope you don't mind...
The new parts include an electronics package for triggering the deployment charge as a separate event, instead of as a built-in feature of the motor. I elected to lengthen the motor tube a little and change the motor selection to only 24mm reloadables. This allowed me to shift the deployment to apogee, instead of an arbitrary time after burn-out. This allowed the rocket to drift upward to the maximum it would achieve, and then deploy the laundry at very gentle velocities, none greater than 15 FPS; most below 10 FPS.
Altitude performance suffers from the added weight, and of course, the selected packages may not be the final units one would use; but it allows the weight of the rocket to be close in the simulation. That same F39 only gets 2100' now, but the deployment velocity is below 2 FPS, and I'll take that compromise instead of shredded laundry any time.
|