One of 50: Challenger, the University of Colorado Boulder QB50 Constellation Satellite

QB50 is a bold project lead by the Von Karman Institute of Fluid Dynamics as part of the European Union FP7 program to launch fifty cubesats from a single launch vehicle. With a planned deployment altitude of 380km, the QB50 constellation will stay below the space station and deorbit within 9-12 months, depending upon solar conditions. Forty of the QB50 satellites are flying specified scientific sensors which include an ion-neutral mass spectrometer, a Langmuir probe or a FIPEX oxygen sensor. This constellation of cubesats will yield an unprecedented set of distributed measurements of the lower-thermosphere. The University of Colorado Boulder was selected as part of a four team consortium of US cubesat providers to participate in the QB50 mission and is supported by the National Science Foundation. The Challenger cubesat, designed and built by a multidisciplinary team of students at the University of Colorado Boulder will carry the ion-neutral mass spectrometer as a science instrument and has heritage from the Colorado Student Space Weather Experiment (CSSWE) and Miniature X-Ray Spectrometer (MinXSS) cubesats. Many of the cubesat subsystems were designed, built and tested by students in the Space Technology Integration (STIg) lab. This paper will provide an overview and a status update of the QB50 program in addition to details of the Challenger cubesat.