Logarithmic variation criteria for the stability of systems with time-varying gains.
Logarithmic variation criteria for stability of feedback systems with time varying gains
SEARCH · Engineering Papers
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Logarithmic variation criteria for stability of feedback systems with time varying gains
Stability analysis of highly eccentric satellite orbits about earth in lunar-solar gravitational disturbing field, deriving approximate criteria from planetary perturbation theory
There are at this date numerable projects, in various Divisions of U.A.C., either in progress or contemplated, which are employing the vortex generator mixing principle. This principle is defined as the method which utilises tip vortices generated by low aspect ratio airfoils for the purpose of transverse mixing of the flow of a confined fluid medium where the axis of the vortex is parallel to the direction of flow. To date, vortex generator design criteria have not been published. Therefore, for the assistance of those individuals concerned and in the interest of the vortex mixing principle, the following material (subject to modifications) is presented in this memorandum report.
Physiological criteria as index of response to stress of chronic acceleration in chickens
Equations of motion and stability criteria for predicting stability and control characteristics of elastic aircraft
Mathematical model of interface sealing phenomenon in determining design criteria for zero leakage connectors for launch vehicles
Propellant slosh load criteria for design of space vehicles
Crack propagation and failure criteria studies for viscoelastic materials, particularly solid propellants
Linear prediction of structural failure criteria for uniaxial fiber composites
Theoretical aspects of radar tracking problem and design criteria for radar tracking systems
Fixed linear systems with generalized performance criteria
Failure criteria for viscoelastic materials
Radiation safety criteria during prolonged space flight
Operational and structural design criteria for artificial gravity stabilization of rotating space station
Logarithmic variation criteria for stability of feedback systems with time varying gains
Weightless simulators effectiveness for obtaining space systems maintainability criteria, using nonparametric experimental design for performance data
Oxygen difluoride-diborane propellant injector and chamber design criteria applied to unmanned spacecraft rocket engine development
Frequency domain stability criteria for open and closed loop distributed parameter linear time invariant systems