Now showing items 1-10 of 190
Equilibrium and stability of a whirling rod-mass system
(Elsevier, 1977)
A two-degree-of-freedom lumped-mass model is used to gain understanding of the equilibrium and stability of a circularly towed cable. Particular cases considered are those of no drag, viscous drag, and viscous drag with a ...
Lambertian invariance and application to the problem of optimal fixed-time impulsive orbital transfer
(Elsevier, 1983)
To develop an efficient technique for the numerical solution of the Lambert problem, a new Lambertian invariant, the ratio of two invariable lengths, is proposed to replace the Gauss ratio of two areas as the main iterative ...
An Adaptively Refined Cartesian Mesh Solver for the Euler Equations
(Elsevier, 1993-01)
A method for adaptive refinement of a Cartesian mesh for the solution of the steady Euler equations is presented. The algorithm creates an initial uniform mesh and cuts the body out of that mesh. The mesh is then refined ...
Deceleration and heating constrained footprint of shuttle vehicles
(Elsevier, 1985-10)
With increasing frequency in shuttle operation, it is of interest to have more than one or two landing fields within the boundary of the reachable area of the reentry vehicle. This boundary, called the footprint, depends ...
An integral method for mixing, chemical reactions, and extinction in unsteady strained diffusion layers
(Elsevier, 1991-02)
An integral method is presented for determining the evolution of molecular mixing, finite rate chemical reactions, and local extinction in diffusion layers under the effect of an unsteady strain rate. The partial differential ...
An appreciation of professor A. Busemann
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1975-12)
Integration of the primer vector in a central force field
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1972-01)
This paper examines the primer vector which governs optimal solutions for orbital transfer when the central force field has a more general form than the usual inverse-square-force law. Along a null-thrust are that connects ...
Optimal aeroassisted return from high earth orbit with plane change
(Elsevier, 1985-01)
This paper gives a complete analysis of the problem of aeroassisted return from a high Earth orbit to a low Earth orbit with plane change. A discussion of pure propulsive maneuver leads to the necessary change for improvement ...
A simple analysis of the blast initiation of detonations
(Elsevier, 1977)
A detonation can be initiated in a fuel-oxidizer cloud by a blast wave of sufficient strength. The Zel'dovich criterion for initiation is that the blast energy must be such that when the pressure ratio across the shock ...
Global stabilization of the oscillating eccentric rotor
(Kluwer Academic Publishers; Springer Science+Business Media, 1996-05)
The oscillating eccentric rotor has been widely studied to model resonance capture phenomena occurring in dual-spin spacecraft and rotating machinery. This phenomenon arises during spin-up as a resonance condition is ...