Ye Olde Rocket Forum - Scrounged-Up Designs 2006

#11

03-25-2006, 10:23 PM

CPMcGraw

BARCLONE Rocketry

Join Date: Mar 2005

Location: Mobile, Alabama

Posts: 5,357

Quote:

Originally Posted by tbzep

That looks good but it looks way too long for scale. Hang on and let me do some figuring...

ST-13 is 1.34" OD
Original Viper is .976 OD
Scale factor is 1.373X

Length of original Viper is 13.875 so the 1.373X version should only be about 19 inches.

Thanks! I appreciate the correction on those figures. Can't explain where the lengthened numbers came from.

The corrected version is right on the mark, even though the BC-13 cone is marginally short for the measurement of the PNC-50Y of the original...

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