NDLI: Verification of a constraint force equation methodology for modeling multi-body stage separation

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Verification of a constraint force equation methodology for modeling multi-body stage separation

Content Provider	NASA Technical Reports Server (NTRS)
Author	Roithmayr Sr., Carlos Tartabini, Paul V. Karlgaard, Christopher Pamadi, Bandu N. Toniolo, Matthew D.
Copyright Year	2008
Description	This paper discusses the verification of the Constraint Force Equation (CFE) methodology and its implementation in the Program to Optimize Simulated Trajectories II (POST2) for multibody separation problems using three specially designed test cases. The first test case involves two rigid bodies connected by a fixed joint; the second case involves two rigid bodies connected with a universal joint; and the third test case is that of Mach 7 separation of the Hyper-X vehicle. For the first two cases, the POST2/CFE solutions compared well with those obtained using industry standard benchmark codes, namely AUTOLEV and ADAMS. For the Hyper-X case, the POST2/CFE solutions were in reasonable agreement with the flight test data. The CFE implementation in POST2 facilitates the analysis and simulation of stage separation as an integral part of POST2 for seamless end-to-end simulations of launch vehicle trajectories.
File Size	5677658
Page Count	15
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20080034488
Archival Resource Key	ark:/13960/t3sv2k19z
Language	English
Publisher Date	2008-08-18
Access Restriction	Open
Subject Keyword	Aerodynamics Stage Separation Flight Tests Rigid Structures Hypersonic Speed Launch Vehicles Simulation Trajectories Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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