Four Terrier-Improved Orions were launched from Poker Flat, Alaska on February 18, 2009. The purpose of these missions is to determine the uppermost levels of neutral air turbulence in the Earth's atmosphere. Dr. Gerald Lehmacher/Clemson University is the Principal Investigator.
By addressing questions about the turbopause, the data gathered with these instruments will aid the modeling and understanding of the ionosphere thermosphere system and the Sun-Earth interface. The turbopause a boundary in the Earth’s neutral atmosphere where turbulent mixing competes with molecular diffusion.
The rockets were launched on February 18, 2009 in following sequence: 41.076 at 09:52:00 Z, 41.078 at 10:29:00 Z, 41.79 at 10:59:00 Z and 41.077 at 11:49:00 Z,