Assessment of the Reconstructed Aerodynamics of the Mars Science Laboratory Entry Vehicle

Schoenenberger, Mark; Norman, John Van; Karlgaard, Chris; Kutty, Prasad; Way, David W.

doi:10.2514/1.a32794

Cited by 46 publications

(36 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…More detailed analysis of the MSL entry vehicle aerodynamic performance are provided in Ref. 68. This section shows the pressure residuals from the IMU-aided MEADS reconstruction.…”

Section: Atmospheric Reconstructionmentioning

confidence: 99%

Mars Entry Atmospheric Data System Trajectory Reconstruction Algorithms and Flight Results

Karlgaard

Kutty

Schoenenberger³

et al. 2013

51st AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition

Self Cite

View full text Add to dashboard Cite

The Mars Entry Atmospheric Data System is a part of the Mars Science Laboratory, Entry, Descent, and Landing Instrumentation project. These sensors are a system of seven pressure transducers linked to ports on the entry vehicle forebody to record the pressure distribution during atmospheric entry. These measured surface pressures are used to generate estimates of atmospheric quantities based on modeled surface pressure distributions. Specifically, angle of attack, angle of sideslip, dynamic pressure, Mach number, and freestream atmospheric properties are reconstructed from the measured pressures. Such data allows for the aerodynamics to become decoupled from the assumed atmospheric properties, allowing for enhanced trajectory reconstruction and performance analysis as well as an aerodynamic reconstruction, which has not been possible in past Mars entry reconstructions. This paper provides details of the data processing algorithms that are utilized for this purpose. The data processing algorithms include two approaches that have commonly been utilized in past planetary entry trajectory reconstruction, and a new approach for this application that makes use of the pressure measurements. The paper describes assessments of data quality and preprocessing, and results of the flight data reduction from atmospheric entry, which occurred on August 5th, 2012.

show abstract

“…More detailed analysis of the MSL entry vehicle aerodynamic performance are provided in Ref. 68. This section shows the pressure residuals from the IMU-aided MEADS reconstruction.…”

Section: Atmospheric Reconstructionmentioning

confidence: 99%

Mars Entry Atmospheric Data System Trajectory Reconstruction Algorithms and Flight Results

Karlgaard

Kutty

Schoenenberger³

et al. 2013

51st AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition

Self Cite

View full text Add to dashboard Cite

show abstract

“…Figure 9 shows the results as published in a paper by Schoenenberger et al [7]. The RCS firing history during MSL's entry was less active than preflight predictions over much of the trajectory.…”

Section: Mars Science Laboratory Flight Datamentioning

confidence: 73%

“…For Mars Science Laboratory which flew at a non-zero trim angle the solution to the pitch stability equation is nearly identical to Equation 7. The difference being the oscillation amplitude is centered about the trim angle.…”

Section: Longitudinal and General Non-lifting Capsule Oscillationsmentioning

confidence: 90%

“…Refer to papers by Karlgaard et al and Schoenenberger et al [6], [7] for a more detailed description of the reconstruction and comparisons with the preflight aerodynamic predictions.…”

Section: Data Reductionmentioning

confidence: 99%

“…For details of the vehicle's aerodynamic characteristics and the reaction control system used to control the vehicle and perform guided entry, refer to References [2], [3], [4], [5]. For a full report of the trajectory reconstruction and comparisons with preflight predictions of the aerodynamics, see References [6] and [7].…”

Section: Mars Science Laboratory Entry Vehiclementioning

confidence: 99%

See 2 more Smart Citations

The aerodynamics of axisymmetric blunt bodies flying at angle of attack

Schoenenberger¹,

Kutty

Queen³

et al. 2014

2014 IEEE Aerospace Conference

Self Cite

View full text Add to dashboard Cite

The Mars Science Laboratory entry capsule is used as an example to demonstrate how a blunt body of revolution must be treated as asymmetric in some respects when flying at a non-zero trim angle of attack. A brief description of the axisymmetric moment equations are provided before solving a system of equations describing the lateral-directional moment equations for a blunt body trimming at an angle of attack. Simplifying assumptions are made which allow the solution to the equations to be rearranged to relate the roll and yaw stability with sideslip angle to the frequency of oscillation of the vehicle body rates. The equations show that for a blunt body the roll and yaw rates are in phase and proportional to each other. The ratio of the rates is determined by the static stability coefficients and mass properties about those axes. A trajectory simulation is used to validate the static yaw stability parameter identification equation and a simple method of identifying the oscillation frequency from the body rates. The approach is shown to successfully extract the modeled yaw stability coefficient along a simulated Mars entry. Mars Science Laboratory flight data results are presented from earlier work which indicate that results from both the validation case and flight data are in agreement with preflight predictions. A brief discussion of the dynamic stability is also provided. Trimming at a nonzero angle suggests that the typical axisymmetric models of the dynamic stability coefficients should be modified. However, further experimental or computational work must be done to separate damping due to body rates and wind relative rates before the correct lifting formulation would affect simulation results.

show abstract

Impact of MPF Aeroshell Configuration on Static Instability at Small Angle of Attack

Lyu

Miao

Huang

et al. 2019

Lecture Notes in Electrical Engineering

View full text Add to dashboard Cite

Assessment of the Reconstructed Aerodynamics of the Mars Science Laboratory Entry Vehicle

Cited by 46 publications

References 16 publications

Mars Entry Atmospheric Data System Trajectory Reconstruction Algorithms and Flight Results

Mars Entry Atmospheric Data System Trajectory Reconstruction Algorithms and Flight Results

The aerodynamics of axisymmetric blunt bodies flying at angle of attack

Impact of MPF Aeroshell Configuration on Static Instability at Small Angle of Attack

Contact Info

Product

Resources

About