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Assessment of the Reconstructed Aerodynamics of the Mars Science Laboratory Entry Vehicle
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Author and Affiliation:
Schoenenberger, Mark(NASA Langley Research Center, Hampton, VA, United States);
Van Norman, John W.(Analytical Mechanics Associates, Inc., Hampton, VA, United States);
Dyakonov, Artem A.(NASA Langley Research Center, Hampton, VA, United States);
Karlgaard, Christopher D.(Analytical Mechanics Associates, Inc., Hampton, VA, United States);
Way, David W.(NASA Langley Research Center, Hampton, VA, United States);
Kutty, Prasad(Analytical Mechanics Associates, Inc., Hampton, VA, United States)
Abstract: On August 5, 2012, the Mars Science Laboratory entry vehicle successfully entered Mars atmosphere, flying a guided entry until parachute deploy. The Curiosity rover landed safely in Gale crater upon completion of the Entry Descent and Landing sequence. This paper compares the aerodynamics of the entry capsule extracted from onboard flight data, including Inertial Measurement Unit (IMU) accelerometer and rate gyro information, and heatshield surface pressure measurements. From the onboard data, static force and moment data has been extracted. This data is compared to preflight predictions. The information collected by MSL represents the most complete set of information collected during Mars entry to date. It allows the separation of aerodynamic performance from atmospheric conditions. The comparisons show the MSL aerodynamic characteristics have been identified and resolved to an accuracy better than the aerodynamic database uncertainties used in preflight simulations. A number of small anomalies have been identified and are discussed. This data will help revise aerodynamic databases for future missions and will guide computational fluid dynamics (CFD) development to improved prediction codes.
Publication Date: Feb 10, 2013
Document ID:
20130010088
(Acquired Feb 26, 2013)
Subject Category: AERODYNAMICS
Report/Patent Number: AAS13-306, NF1676L-15415
Document Type: Conference Paper
Meeting Information: 23rd AAS/AIAA Space Flight Mechanics Meeting; 10-14 Feb. 2013; Kauai, HI; United States
Meeting Sponsor: American Astronautical Society; United States
American Inst. of Aeronautics and Astronautics; United States
Contract/Grant/Task Num: WBS 757285.01.07.40
Financial Sponsor: NASA Langley Research Center; Hampton, VA, United States
Organization Source: NASA Langley Research Center; Hampton, VA, United States
Description: 20p; In English; Original contains color and black and white illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Distribution as joint owner in the copyright
NASA Terms: AERODYNAMIC CHARACTERISTICS; ATMOSPHERIC ENTRY; MARS ATMOSPHERE; PRESSURE MEASUREMENT; HEAT SHIELDING; DESCENT; MARS SCIENCE LABORATORY; PARACHUTES; ANOMALIES; SIMULATION; COMPUTATIONAL FLUID DYNAMICS
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