Cusp Heating Investigation (CHI)

  • Mission
  • Vehicle
  • Launch
  • Photos

The purpose of the mission was to measure neutral upwelling and high-resolution electric fields over an extended region in the Cusp. The measurement technique was eight non-ejecting barium/strontium canister releases distributed across the vehicle trajectory above 180 km altitude.

The Principal Investigator is Dr. Larsen/Clemson University.

Drawing of a Terrier-Black Brant sounding rocketThe Black Brant 9 is a two stage sounding rocket with a Terrier first stage and Black Brant second stage. The Black Brant 9 can reach altitudes of about 600 km. Payloads weighing from 400 to 1200 pounds can be flown.

Additional sounding rocket vehicles


The CHI mission was launched fromSvalbard, Norway on December 10, 2019.