Investigation of a nonlinear control system (1958)
I. Flugge-Lotz, C. F. Taylor, H. E. Lindberg
A discontinuous variation of coefficients of the differential equation describing the linear control system before nonlinear elements are added is studied in detail. The nonlinear feedback is applied...
Investigation of a nonlinear control system (1957)
Nonlinear elements are sometimes added to linear control systems in order to improve the response of the system to an arbitrary input. This can be done in different ways, one of them being the...
The Poisson integral involved in the determination of the change in velocity distribution resulting from a change in airfoil profile in parallel incompressible flow is solved. First, three...
Design of centrifugal impeller blades (1939)
This paper restricts itself to radial impellers with cylindrical blades since, as Prasil has shown, the flow about an arbitrarily curved surface of revolution may be reduced to this normal form we...