Launch Vehicle Abort Analysis of Failures Leading to Loss of Control

Hanson, John M.; Hill, Ashley D.; Beard, Bernard B.

doi:10.2514/1.a32061

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…Thrust vector control (TVC) problems [22][23][24] may be caused by hardware issues regarding the actuators or power supplies, or it may be due to software issues regarding the improper commands being sent to the actuators. These problems could manifest themselves by actuators failing to hard over (maximum angle), failing in place, or failing to the null position.…”

Section: Thrust Vector Control Problemmentioning

confidence: 99%

Pseudospectral Model Predictive Control for Exo-atmospheric Guidance

Rahman¹,

Zhang²,

Yang³

et al. 2015

International Journal of Aeronautical and Space Sciences

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This paper suggests applying pseudospectral model predictive method for exo-atmospheric guidance. The method is a fusion of pseudospectral law and model predictive control, in which a two point boundary value problem is formulated using model predictive approach and solved by applying pseudospectral law. In this work, the method is applied to exo-atmospheric guidance with specific target requirement. The existing exo-atmospheric guidance methods suffice general requirements for guidance, but cannot ensure specific target constraints; whereas, the presented method is able to do so. The proposed guidance law is assessed through simulation of perturbed cases, and the tests suggest that the method is able to operate semiautonomously under control and thrust vector perturbations.

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Section: Thrust Vector Control Problemmentioning

confidence: 99%

Pseudospectral Model Predictive Control for Exo-atmospheric Guidance

Rahman¹,

Zhang²,

Yang³

et al. 2015

International Journal of Aeronautical and Space Sciences

View full text Add to dashboard Cite

show abstract

Powered-Coast-Powered Guidance Reconfiguration Method of Launch Vehicle with Thrust Drop Fault

Song

2022

Guid. Navigat. Control

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This paper describes the study of a powered-coast-powered guidance reconfiguration (PCPGR) method used to solve the autonomous rescue problem for the mission profile of a launch vehicle with a coasting phase when the thrust drop fault occurs in the first powered phase (FPP) of the final stage. We first described the constraints of the final stage and the construction of the PCP guidance problem. Then we evaluated the adaptability of the guidance reconfiguration (GR) offline with numerical optimization by adjusting the constraints of the FPP, the coast phase, and the second powered phase. To determine the fault state set where the rocket can enter the prescribed target orbit through the GR initiate, we proposed a Newton method-based rapid replanning method of the transfer orbit that transforms the complex multi-flight phase trajectory planning problem into a feasible transfer orbit search problem to produce a fast solution onboard. Combined with the adaptive adjustment of the coasting time and the iterative guidance mode, we realized the autonomous online rescue of the payload. The simulation results showed that the proposed method achieved a reliable and rapid solution and improved a launch vehicle’s adaptability to a thrust drop fault.

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Launch Vehicle Abort Analysis of Failures Leading to Loss of Control

Cited by 2 publications

References 4 publications

Pseudospectral Model Predictive Control for Exo-atmospheric Guidance

Pseudospectral Model Predictive Control for Exo-atmospheric Guidance

Powered-Coast-Powered Guidance Reconfiguration Method of Launch Vehicle with Thrust Drop Fault

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