2014
DOI: 10.2514/1.a32788
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Mars Science Laboratory Descent-Stage Integrated Propulsion Subsystem: Development and Flight Performance

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Cited by 11 publications
(3 citation statements)
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“…Backshell separation is followed by a one second of free fall to avoid short term re-contact with the backshell, a 0.2 s of open-loop MLE warm up at 20 % throttle, a profiled de-tumble maneuver to null the attitude-rates present at backshell separation, and a profiled turn to the desired attitude at the start of the translational guidance [5,6]. These two close-loop attitude maneuvers are allocated 2.5 s for their completion.…”
Section: Landing Phasementioning
confidence: 99%
See 1 more Smart Citation
“…Backshell separation is followed by a one second of free fall to avoid short term re-contact with the backshell, a 0.2 s of open-loop MLE warm up at 20 % throttle, a profiled de-tumble maneuver to null the attitude-rates present at backshell separation, and a profiled turn to the desired attitude at the start of the translational guidance [5,6]. These two close-loop attitude maneuvers are allocated 2.5 s for their completion.…”
Section: Landing Phasementioning
confidence: 99%
“…For each phase, a polynomial function provides a reference trajectory (position, attitude, acceleration magnitude) to be followed closed loop by the Power Descent translational controllers (Fig. 12); the polynomial coefficients are computed at the beginning of each phase by solving a two-point boundary-value problem [5].…”
Section: Landing Phasementioning
confidence: 99%
“…At this point, the entry propulsion system transitions from blow-down pressurization to a higher regulated pressure to provide sufficient thrust for entry control and the later powered flight segment. 3 When the spacecraft senses drag acceleration of 0.2 Earth g's, entry guidance begins. Using the lift provided by the center of gravity offset, the guided entry system is able to correct for errors in initial delivery state, atmosphere conditions, and aerodynamic uncertainties while also significantly increasing altitude capability by modulating the direction of lift.…”
Section: Entrymentioning
confidence: 99%