MRC Concept II Trailblazer (Estes version)

thingiverse

This is the Estes version of the MRC Concept II Trailblazer that is based on the Trailblazer II sounding rocket flown by NASA from 1961 to 1973. All of the parts are designed to be compatible with Estes airframe tubing. This kit can use a single 18mm (A-C) rocket motor or a 24mm (D) rocket motor. The three sizes of tubes you will need to provide for this model are: BT-20 for the upper stage airframe, BT-55 for the upper stage payload bay, BT-60 for the lower stage airframe. BT-20 motor mount tube, thrust ring, and engine hook for 18mm motors or a BT-50 motor mount tube, thrust ring, and engine hook for 24mm motors Other parts you will need: Shock cord (Kevlar or Spectra) that is 30 inches (762.00mm) in length (1) 18 inch (457.2mm) diameter parachute MRC Concept II Trailblazer (original) https://www.thingiverse.com/thing:5821197 MRC Concept II Catalog http://www.ninfinger.org/rockets/nostalgia/mrc02.html More information about the Trailblazer II sounding rocket. https://www.designation-systems.net/dusrm/app4/trailblazer2.html http://www.astronautix.com/t/trailblazer2.html Thanks to mikeyd from The Rocketry Forum (TRF) for allowing me to reproduce his personally owned kit.