SASSI2 [University Of Illinois, Urbana-Champaign]
The SASSI2 (Student Aerothermal Spectrometer Satellite of Illinois and Indiana) is a 3U CubeSat scientific investigation mission by the University Of Illinois, Urbana-Champaign, and, which will utilize optical instrumentation in conjunction with temperature and pressure measurements to improve models of thermochemical non-equilibrium and electronic excitation occurring in high enthalpy flows.
This mission will characterize the flow and radiation generated by the diffuse bow shock formed during high-speed flight through the upper atmosphere. Optical spectrographic measurements of the radiation will provide benchmark data for flow, radiation, and materials modeling, improving aerothermal reentry models. Improved modeling will enable reduction of current thermal protection system design margins, ultimately resulting in lower-mass, higher-reliability thermal protection systems.
The satellites payload consists of an optical spectrometer Payload (UIUC) and the Purdue Sensor Payload. It consists of following instruments:
The satellite was built for a deployment from the ISS. Magnetic rotors provide attitude control during gradual orbital decay and orient the CubeSat perpendicular to freestream near apogee. It retains orbital energy by maintaining orbital eccentricity. SASSI2 will record atmospheric data below 200 km.
It was selected in 2017 by NASA's CubeSat Launch Initiative (CSLI) to be launched as part of the ELaNa program. SASSI2 was launched with the Cygnus CRS-11 mission on an Antares-230 rocket, which deployed it directly from the launch vehicles stage 2 in a very low orbit.
|Type / Application:||Science, atmosphere|
|Operator:||University Of Illinois, Urbana-Champaign, Purdue University|
|Contractors:||University Of Illinois, Urbana-Champaign, Purdue University|
|Equipment:||Optical spectrometer Payload (UIUC), Purdue Sensor Payload|
|Power:||Solar cells, batteries|
|Orbit:||201 km × 291 x 51.6°|
|SASSI2||2019-022#||17.04.2019||WI LC-0A||Antares-230||with Cygnus CRS-11, VCC A, B, C, Bird JPN, Bird LKA, Bird NPL, IOD-GEMS, SpooQy 1, Światowid, KrakSat, AeroCube 10A, AeroCube 10B, Seeker, EntrySat, ThinSat 1A, ..., 1L|