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Old 05-04-2013, 09:58 PM
stefanj stefanj is offline
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Join Date: Mar 2005
Location: Hillsboro, OR
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You might check out the early Estes technical reports.

The multi-staging one is reprinted here:

http://www.ninfinger.org/rockets/ca...an/esttech.html

Clustering report from 1963:

http://www.oldrocketplans.com/pubs/..._Estes_TR-6.pdf

The early Estes, Coaster, and Centuri catalogs will help you determine the "first kit" milestones. The first multi-stage kit was likely the Apogee (no "II"). Not sure if Estes or Centuri introduced the first three-stager.
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