Browsing Aeronautics and astronautics by Subject "Theses--Aeronautics and astronautics"
Now showing items 1-11 of 11
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Analytic shape sensitivities and approximations of local and global airframe buckling constraints
(1997)An examination of available shell finite elements suitable for buckling analysis of thin walled airframe structures leads to the selection of a simple, accurate, design-oriented element, which is, then, used with slight ... -
Durability of polymeric composites after elevated temperature aging
(1997)The Compression After Impact (CAI) strength of polymeric composites after long term elevated temperature aging is studied. Aging temperatures range from 149$\sp\circ$C to 204$\sp\circ$C (300$\sp\circ$F to 400$\sp\circ$F). ... -
Finite element analysis of propagating interface cracks in composites
(1986)A complex variable formulation has been developed to describe the near-field state of stresses and displacements for a propagating crack along the interface of two dissimilar anisotropic materials. It is shown that the ... -
Fluid dynamics of the shock wave reactor
(2000)High commercial incentives have driven conventional olefin production technologies to near their material limits, leaving the possibility of further efficiency improvements only in the development of entirely new techniques. ... -
Interaction of an accelerated FRC in a transverse magnetic field
(1998)The interaction and penetration of an accelerated FRC into a transverse magnetic field is studied for Tokamak refueling purposes. FRC penetration and interaction in the transverse magnetic field chamber is observed using ... -
Numerical simulation of unsteady hypersonic chemically reacting flow
(1995)The goal of this research is to develop and evaluate a new algorithm for the numerical solution of the axisymmetric Navier-Stokes equations for unsteady hypersonic flow with chemically reacting gas species. The LU-SGS ... -
Paramagnetic spin-up of a field reversed configuration with rotating magnetic field current drive
(2003)A transverse Rotating Magnetic Field (RMF) can drive toroidal current and sustain the poloidal flux of a Field Reversed Configuration (FRC) through the application of a 〈vz x Br〉 Lorentz force on the electrons, where vz ... -
The star thrust experiment, rotating magnetic field current drive in the field reversed configuration
(2001)The Star Thrust Experiment (STX) has formed and sustained the Field Reversed Configuration (FRC) with a Rotating Magnetic Field (RMF) operated at a strength of 25 G and a frequency of 350 kHz. The RMF was generated with ... -
A study of jet exhaust-wing interaction
(2005)Non-steady loading of surfaces embedded in a two-dimensional shear-layer is studied as a first step in understanding and predicting the forces generated in aircraft exhaust-jet and wing interactions. It is hypothesized ... -
Wake closure conditions in plug nozzle flowfields
(1999)The aerospike, of plug, nozzle is being proposed for future space launch vehicle applications. The design of the nozzle involves complex wake structures that directly affect engine performance. In particular, the closed ...