Analysis of a low-vapor-pressure cryogenic propellant tankage system

Torre, C. N.; Witham, Jim; Dennison, Elisabeth A.; McCool, R.C.; Rinker, M.

doi:10.2514/3.26081

Cited by 5 publications

(7 citation statements)

References 4 publications

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“…In Eq. (17), the wall temperature T w is governed by the heat flow passing through the walls from the environment [1][2][3]. Also, here, A vl are the internal tank surfaces in contact with vapor (liquid) (see Appendix A).…”

Section: B Mass Conservationmentioning

confidence: 99%

“…= tank wall w=boil = vapor generated by tank walls I. Introduction T HE fueling of rockets with liquid propellant is a very important and dangerous procedure, especially in the case of hydrogen [1][2][3][4]. The major goal of this paper is to develop a medium-fidelity lumped-parameter dynamical model of propellant loading that 1) takes into consideration a variety of complex multiphase phenomena that govern the storage and transfer of cryogenic propellants, and yet is simple enough to 2) allow for physics analysis and is suitable for numerical simulations of real loading systems.…”

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confidence: 99%

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Dynamical Model of Rocket Propellant Loading with Liquid Hydrogen

Осипов

Daigle

Muratov

et al. 2011

Journal of Spacecraft and Rockets

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Section: B Mass Conservationmentioning

confidence: 99%

mentioning

confidence: 99%

Dynamical Model of Rocket Propellant Loading with Liquid Hydrogen

Осипов

Daigle

Muratov

et al. 2011

Journal of Spacecraft and Rockets

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“…The wall temperature T w is governed by the heat flow passing through the walls from the environment [1][2][3].…”

Section: Tank Modelingmentioning

confidence: 99%

“…The loading of cryogenic spacecraft propellants is an inherently risky and unsafe operation, especially in the case of hydrogen [1][2][3][4]. Therefore, diagnostic solutions are necessary to quickly identify when a fault occurs, so that recovery ac-tions can be taken or an abort procedure can be initiated before system safety is compromised.…”

Section: Introductionmentioning

confidence: 99%

Model-based diagnostics for propellant loading systems

Daigle

Foygel

Smelyanskiy

2011

2011 Aerospace Conference

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Abstract-The loading of spacecraft propellants is a complex, risky operation. Therefore, diagnostic solutions are necessary to quickly identify when a fault occurs, so that recovery actions can be taken or an abort procedure can be initiated. Model-based diagnosis solutions, established using an in-depth analysis and understanding of the underlying physical processes, offer the advanced capability to quickly detect and isolate faults, identify their severity, and predict their effects on system performance. We develop a physics-based model of a cryogenic propellant loading system, which describes the complex dynamics of liquid hydrogen filling from a storage tank to an external vehicle tank, as well as the influence of different faults on this process. The model takes into account the main physical processes such as highly nonequilibrium condensation and evaporation of the hydrogen vapor, pressurization, and also the dynamics of liquid hydrogen and vapor flows inside the system in the presence of helium gas. Since the model incorporates multiple faults in the system, it provides a suitable framework for model-based diagnostics and prognostics algorithms. Using this model, we analyze the effects of faults on the system, derive symbolic fault signatures for the purposes of fault isolation, and perform fault identification using a particle filter approach. We demonstrate the detection, isolation, and identification of a number of faults using simulation-based experiments.

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“…[1][2][3] Hence, understanding the dynamics of the filling process under realistic conditions is a problem of great importance. At the same time, similar issues also arise in many other cryogenic applications, in particular, in the studies of feasibility of hydrogenfueled cars.…”

mentioning

confidence: 99%