Signal analyzer i - a signal analysis system for manual control studies.
Signal Analyzer I as signal analysis system for manual control studies, using digital computer
DIGITAL COMPUTER↗
SEARCH · Engineering Papers
Results for “Transfer Function”
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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Factors affecting the sensitivity of gamma- level ring-core magnetometers.
Gamma-level ring-core magnetometer sensitivity parameters, noting frequency, dynamic differential permeability, number of pickup turns, etc
HARMONIC GENERATION↗
The design of high performance active RC BAND-PASS filters.
High performance active RC band pass filter design providing for independent adjustment of poles
RC NETWORK↗
The application of linear optimal control to systems containing uncertain parameters.
Linear optimal control in systems with uncertain parameters, noting application to design of compensating network for flexible booster for uncertain value of first bending mode
NETWORK SYNTHESIS↗
Rapid identification of linear and nonlinear systems.
Rapid parameter identification system for linear time-invariant plant with only input and output measurable
TRANSFER FUNCTION↗
The complete Rayleigh-scattered field within a homogeneous plane-parallel atmosphere.
Complete Rayleigh scattered field within homogeneous plane parallel atmosphere, noting scalar transfer equation extension
ATMOSPHERIC SCATTERING↗
Process of adaptation by the human controller
Model for detection, identification, and modification phases of process by which human operator adapts to changes in dynamics
DYNAMIC MODEL↗
Synthesis of active distributed RC networks.
Synthesis technique for RC network using two distributed RC elements, one negative impedance converter and one lumped capacitor
NETWORK SYNTHESIS↗
On the decoupling of multivariable systems.
Necessary and sufficient conditions for decoupling time-invariant linear multivariable system by state variable feedback, discussing transfer matrix consequences
MATRIX ALGEBRA↗
Structural and electromechanical interaction in the multiple-exciter technique for random vibration testing.
Random vibration testing by multiple electrodynamic exciter technique, analyzing electromechanics and structural feedback
POWER SPECTRUM↗
Rapid identification of linear and nonlinear systems.
Rapid parameter identification system for linear time-invariant plant with only input and output measurable
TRANSFER FUNCTION↗
A suboptimal approach to the control of systems containing uncertain parameters.
Linear optimal control in systems with uncertain parameters, noting application to design of compensating network for flexible booster for uncertain value of first bending mode
OPTIMAL CONTROL↗
Thin film heat transfer gage is stable at higher temperatures
Thin film convective heat transfer gage functions effectively for prolonged periods at temperatures up to 1000 degrees F. An initial resistance shift does not inhibit the performance or accuracy of the gages, as the original resistance-temperature relationship remains unchanged.
Loyd, J. R.↗
Approximate relations for laminar heat-transfer and shear-stress functions in equilibrium dissociated air
Approximate equations for computing enthalpy and velocity derivatives at surface of flat plate, cone, or blunt axisymmetric body
Zoby, E. V.↗
The Apollo Docking System
The Apollo docking system is the means by which the Apollo command and service modules and the lunar module are connected and disconnected during a lunar-landing mission. The system incorporates a CSM probe assembly that mates with a drogue assembly on the LM. Twelve automatic latches mounted on the CSM docking ring provide for structural integrity between the vehicles and for tunnel sealing during crew transfer. A functional description of the flight hardware and the alternate concepts that were evaluated to determine the system best suited to Apollo requirements are presented.
Kenneth A Bloom↗
Reachable sets for linear dynamical systems.
The properties of reachable sets for linear dynamical systems for specified control sets are discussed. Iterative procedures for determining numerical approximations of the reachable set are suggested and methods of obtaining an admissible control function which transfers an initial state to as near a prescribed target as possible is described. The problem of reachability with multiple control constraints is discussed and certain aspects of reachability for time-invariant systems with adjustable parameters is considered.
Pecsvaradi, T.↗
Texas applications system verification and transfer remote sensing information subsystem: Functional design
There are no author-identified significant results in this report.
Brown, M. L., Jr.↗
Performance of a magnetic multipole line-cusp argon ion thruster
A 17 cm diameter line cusp ion thruster was evaluated with inert gases which are candidate propellants for on orbit and orbit transfer propulsion functions for Large Space Systems. A semiempirical relationship was generated to predict thruster beam current in terms of plasma parameters which would allow initial thruster optimization without ion extraction and the associated large vacuum facilities. The sensitivity of performance to changes in discharge electrode configurations and magnetic circuit was evaluated and is presented. After final optimization a propellant utilization efficiency of 0.9 at a discharge chamber power expenditure of about 260 w per beam ampere was obtained. These performance parameters are the highest yet achieved with argon propellant.
Sovey, J. S.↗