The subject of uncertainty analysis in complex systems design is a broad and bourgeoning field of study. This paper focuses on only three very specific areas of current propulsion research wherein uncertainty plays a pivotal role in the problem formulation. The first is probabilistic approaches to matching engine cycle models to test data. Engine cycle models must have a high confidence of repr...

mechan ics (ICFM) to a s t a t e o f p r a c t i c a l a p p l i c a t i o n for aerospace p r o p u l s i o n systems. The s t r a t e g i e s used to a c h i e v e t h i s g o a l a r e t o (1) pu rsue an u n d e r s t a n d i n g o f f low p h y s i c s , s u r f a c e h e a t t r a n s f e r , and combus t ion v i a a n a l y s i s and fundamental exper imen ts , ( 2 ) i n c o r p o r a t e...

aCalifornia Institute of Technology, 1200 E. California Drive, Pasadena, California 91125, USA bCurrently with the Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, California 91109, USA cCurrently with Northrup Grumman Aerospace Systems, One Space Park Dr., Redondo Beach, California 90278, USA dCurrently with The Charles Stark Draper Laboratory, Inc., 555 Technology Square, Cambridge, M...

A Cartesian grid generation methodology is developed for unsteady control volume computational fluid dynamic (CFD) solvers. Arbitrary combinations and numbers of moving and stationary boundaries are allowed to exist in the two-dimensional Cartesian grid template. Specific definitions for the possible cases, CFD solver requirements and moving geometry handling algorithms of Cartesian grids are d...

C. Mavroidis , C. Pfeiffer , J. Celestino a, 3 and Y. Bar-Cohen , a Robotics and Mechatronics Laboratory Department of Mechanical and Aerospace Engineering Rutgers University, The State University of New Jersey 98 Brett Rd., Piscataway, NJ 08854-8058 Tel: 732-445-0732, Fax: 732-445-3124 E-mail: [email protected] b Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove ...

R.A. Mewaldta, A.J. Davisa, W.R. Binnsb, G.A. de Nolfo\ J.S. Georged, M.H. Israelb, R. A. Leskea, E.C. Stonea, M.E. Wiedenbecke and T.T. von Rosenvingec (a) California institute of Technology. Pasadena, CA 91125 USA (b) Washington University, StLouis, MO 63105 USA (c) NASA/Goddard Space Flight Center, Greenbelt MD 20771 (d) Aerospace Corporation, Los Angeles CA. 90009 USA (e) Jet Propulsion Lab...