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Brad Morse replied to the topic "Confused 5120 n-sec" – 5 years, 9 months ago
You cannot do a cluster or a staged project for a cert flight. From http://www.tripoli.org/cert/TRA_Certification_Rules_2009.pdf“Motor – The certification flight must be with a single certified M or larger motor (tested total impulse greater than 5120.01 n-secs). Staged and/or Clustered rockets… Read more»