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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.
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Boundedness of transient regimes in a pentavariate automatic control system
Automatic control system equipped with autopilot having proportional feedback, and three- dimensional field of control
Automatic control and methods of electric measurements. Volume II - Theory of data processing systems. Automatic control systems. Electronic measurement of nonelectric quantities
Automatic control systems and electric measurement of nonelectric quantities in data processing related to theoretical considerations, space flights, and production engineering
Identification in automatic control systems
Automatic control system identification with respect to optimality criteria, mathematical models, computing techniques and input signals
Multiple-camera automatic controller
Device automatically controls exposure time and frame sequencing for three remotely located cameras used for photographing interior of internal-combustion chamber through special viewing ports. Controller is highly applicable in many areas where closely monitored remote photography is required.
LYAPUNOV FUNCTIONS FOR THE PROBLEM OF LUR'E IN AUTOMATIC CONTROL
Liapunov functions - automatic control
Automatic-Control System for Safer Brazing
Automatic-control system for radio-frequency (RF) induction brazing of metal tubing reduces probability of operator errors, increases safety, and ensures high-quality brazed joints. Unit combines functions of gas control and electric-power control. Minimizes unnecessary flow of argon gas into work area and prevents electrical shocks from RF terminals. Controller will not allow power to flow from RF generator to brazing head unless work has been firmly attached to head and has actuated micro-switch. Potential shock hazard eliminated. Flow of argon for purging and cooling must be turned on and adjusted before brazing power applied. Provision ensures power not applied prematurely, causing damaged work or poor-quality joints. Controller automatically turns off argon flow at conclusion of brazing so potentially suffocating gas does not accumulate in confined areas.
Research in and Application of Modern Automatic Control Theory to Nuclear Rocket Dynamics and Control Interim Report
Automatic control theory applied to nuclear rocket dynamics and control using stochastic algorithms
Device for the Automatic Control of Airplanes
This report provides a description of an automatic control mechanism that consists of an automatic elevator control, aileron control, and a rudder control. Each automatic control can be independently switched on or off.
INFLUENCE OF AUTOMATIC CONTROL OF ROLL COUPLING AND PITCH-UP ON TAIL LOADS
Stability & control of aircraft - aerodynamic loading
Research in and application of modern automatic control theory to nuclear rocket dynamics and control, volume I Semiannual status report
Linear optimal feedback control theory for nuclear rocket dynamics and control problems
The use of automatic control theory and a pilot math model in helicopter manual control system synthesis
Using automatic control theory with simple pilot model for synthesizing helicopter landing approach flight director control laws
On a system of equations in automatic control theory.
Asymptotic stability of automatic control equations for nonsingular and singular cases, establishing existence conditions for Liapunov function
Automatic control systems for ion engines.
Automatic control systems for electron bombardment and contact ion engines
A method for predicting the stability in roll of automatically controlled aircraft based on the experimental determination of the characteristics of an automatic pilot
A method is suggested for predicting the stability of automatically controlled aircraft by a comparison of calculated frequency-response curves for the aircraft and experimentally determined frequency-response curves for the automatic pilot. The method is applied only to stabilization in roll. The method is expected to be useful as a means of establishing the specifications of the performance required of the automatic control device for pilotless aircraft designed as missiles.
RAPID ALGEBRAIC TECHNIQUES FOR SOLVING AUTOMATIC CONTROL EQUATIONS
Rapid techniques for solving automatic control equations
Application of the concept of dynamic trim control and nonlinear system inverses to automatic control of a vertical attitude takeoff and landing aircraft
A full envelope automatic flight control system based on nonlinear inverse systems concepts has been applied to a vertical attitude takeoff and landing (VATOL) fighter aircraft. A new method for using an airborne digital aircraft model to perform the inversion of a nonlinear aircraft model is presented together with the results of a simulation study of the nonlinear inverse system concept for the vertical-attitude hover mode. The system response to maneuver commands in the vertical attitude was found to be excellent; and recovery from large initial offsets and large disturbances was found to be very satisfactory.