Page History

Responsible Engineers: Jorian, Alex, Tamara, Berkin, Xander

Assignments Week 2:

• HEI CAD - Xander, Alex 

Assignments Week 1:

• Alex - preliminary design HEI test stand 
• Berkin - 
• Jorian - 
• Tamara - 

HEI Designs choices to still think about after CoDR

• case calcs 
• bolt calcs
• angled nozzle?

HEI Goals/Changes:

• HEI for booster and sustainer??
• good seal
• able to be integrated separately and slapped on at the end
• liner no crack plz
• improve the actual integration of the HEI
• low-oxygen grain that will fit the new diameter (blue thunder works up to 3")
• MAKE A TEST STAND PLEASE
• HYDROSTATIC TEST WITH HEI

HEI Test Stand

• hold in place
• explode upwards
• bench vise
• steel/aluminum plate 

HEI designs:

• 75mm liner and blue thunder propellant
• 1.5s burn time for grain (ID?)

HEI seal ideas

• old: phenolic at nozzle and aluminum interface
• o-ring on the inner side of the aluminum tube (inner groove tool needed)

Separate integration

• forward closure that you can remove
• HEI in two parts 
  • nozzle included in lower part so the propellant is sealed

HEI integration

• thicker liner

Hydrostatic test

• HEI hydrostatic
• main motor hydrostatic fire with modified HEI on top
  • machine everything out of aluminum

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