PLIF Study of Mars Science Laboratory Capsule Reaction Control System Jets | Zendy

Craig T. Johansen | Zendy; Paul M. Danehy | Zendy; Scott W. Ashcraft | Zendy; Brett F. Bathel | Zendy; Jennifer A. Inman | Zendy; Stephen B. Jones | Zendy

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PLIF Study of Mars Science Laboratory Capsule Reaction Control System Jets

Author(s) -

Craig T. Johansen,

Paul M. Danehy,

Scott W. Ashcraft,

Brett F. Bathel,

Jennifer A. Inman,

Stephen B. Jones

Publication year - 2011

Publication title -

41st aiaa fluid dynamics conference and exhibit

Language(s) - English

Resource type - Conference proceedings

DOI - 10.2514/6.2011-3890

Subject(s) - mars exploration program , astrobiology , capsule , aerospace engineering , computer science , engineering , geology , physics , paleontology

Nitric-oxide planar laser-induced fluorescence (NO PLIF) was used to visualize the flow in the wake of a Mars Science Lab (MSL) entry capsule with activated reaction control system (RCS) jets in NASA Langley Research Center’s 31-Inch Mach 10 Air Tunnel facility. Images were processed using the Virtual Diagnostics Interface (ViDI) method, which brings out the three-dimensional nature of the flow visualization data while showing the relative location of the data with respect to the model. Comparison of wind-on and wind-off results illustrates the effect that the hypersonic crossflow has on the trajectory and structure of individual RCS jets. The visualization and comparison of both single and multiple activated RCS jets indicate low levels of jet-jet interaction. Quantitative streamwise velocity was also obtained via NO PLIF molecular tagging velocimetry (MTV).

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