The Entry Descent and Landing Instrumentation (MEDLI2) Suite for the Mars 2020 MissionThis presentation will discuss the current state of each of the main measurements systems for MEDLI2. The first system is a network of pressure transducers, the Mars Entry Atmospheric Data System (MEADS). Improving upon MEDLI, separate MEDLI2 pressure transducers span the measurement range suitable for both hypersonic and supersonic flows. The MEADS will also measure pressure on the backshell of the vehicle to better characterize the contribution of backshell pressure on the overall forces and moments on the entry probe. The second system is the thermal instrumentation, or Mars Instrumented Sensor Plugs. This system includes a network of high-temperature thermocouples embedded in the thermal protection system across the heatshield and backshell. The MISP also includes two types of sensors for directly measuring incident heatflux on the backshell of the vehicle. In addition, a radiometer is included on the backshell to measure radiative heating. The presentation will also cover the current state of the MEDLI2 hardware, expected environments that will be measured, and data analysis techniques being developed to infer vehicle entry performance from both the MISP and MEADS sensor systems.
Document ID
20190028649
Acquisition Source
Ames Research Center
Document Type
Presentation
Authors
White, Todd (NASA Ames Research Center Moffett Field, CA, United States)
Mahzari, Milad (NASA Ames Research Center Moffett Field, CA, United States)
Tang, Chun (NASA Ames Research Center Moffett Field, CA, United States)
Karlgaard, Chris D. (Analytical Mechanics Associates, Inc. Hampton, VA, United States)
Schoenenberger, Mark (NASA Langley Research Center Hampton, VA, United States)
Cruden, Brett A. (Analytical Mechanics Associates, Inc.)
Date Acquired
August 1, 2019
Publication Date
July 8, 2019
Subject Category
Spacecraft Design, Testing And PerformanceSpacecraft Instrumentation And Astrionics