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Fault Diagnostics and Prognostics for Large Segmented SRMsWe report progress in development of the fault diagnostic and prognostic (FD&P) system for large segmented solid rocket motors (SRMs). The model includes the following main components: (i) 1D dynamical model of internal ballistics of SRMs; (ii) surface regression model for the propellant taking into account erosive burning; (iii) model of the propellant geometry; (iv) model of the nozzle ablation; (v) model of a hole burning through in the SRM steel case. The model is verified by comparison of the spatially resolved time traces of the flow parameters obtained in simulations with the results of the simulations obtained using high-fidelity 2D FLUENT model (developed by the third party). To develop FD&P system of a case breach fault for a large segmented rocket we notice [1] that the stationary zero-dimensional approximation for the nozzle stagnation pressure is surprisingly accurate even when stagnation pressure varies significantly in time during burning tail-off. This was also found to be true for the case breach fault [2]. These results allow us to use the FD&P developed in our earlier research [3]-[6] by substituting head stagnation pressure with nozzle stagnation pressure. The axial corrections to the value of the side thrust due to the mass addition are taken into account by solving a system of ODEs in spatial dimension.
Document ID
20090035822
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Luchinsky, Dmitry
(NASA Ames Research Center Moffett Field, CA, United States)
Osipov, Viatcheslav V.
(NASA Ames Research Center Moffett Field, CA, United States)
Smelyanskiy, Vadim N.
(NASA Ames Research Center Moffett Field, CA, United States)
Timucin, Dogan A.
(NASA Ames Research Center Moffett Field, CA, United States)
Uckun, Serdar
(NASA Ames Research Center Moffett Field, CA, United States)
Hayashida, Ben
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Watson, Michael
(NASA Marshall Space Flight Center Huntsville, AL, United States)
McMillin, Joshua
(Alliant Techsystems, Inc. Salt Lake City, UT, United States)
Shook, David
(Alliant Techsystems, Inc. Salt Lake City, UT, United States)
Johnson, Mont
(Alliant Techsystems, Inc. Salt Lake City, UT, United States)
Hyde, Scott
(Alliant Techsystems, Inc. Salt Lake City, UT, United States)
Date Acquired
August 24, 2013
Publication Date
March 7, 2009
Publication Information
ISBN: 978-1-4244-2622
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
IEEEAC Paper #1001
ARC-E-DAA-TN-311
Meeting Information
Meeting: IEEE 2009 Aerospace
Location: Big Sky, MT
Country: United States
Start Date: March 7, 2000
End Date: March 14, 2000
Sponsors: Institute of Electrical and Electronics Engineers, American Inst. of Aeronautics and Astronautics
Distribution Limits
Public
Copyright
Other

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