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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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Industrial Control Systems protocol parsers plugins for the Zeek network security monitoring framework. Currently we have four fully developed protocol parsers but we plan on adding more in the future. The protocol parsers we currently have developed are for BACnet, DNP3, Ethernet/IP, and Modbus.
Automatic control system is designed to rotate a dome so that a telescope, or other instruments, within the dome will continuously view the sun as the earth rotates.
Trajectory sensitivity of optimal control system
Equations for active control system of generalized spacecraft simulation computer program
Differential equation describing nonlinear control systems, and literature survey on using Liapunov functions for problem solutions
Spacecraft wide angle attitude control system stability analysis, using air bearing table simulation
ATS-3 hydrazine orbit control system efficiency evaluation statistical method, considering stationkeeping maneuvers
Spacecraft wide angle attitude control system stability analysis, using air bearing table simulation
Development of attitude control system for spacecraft orientation
Traffic control system for supersonic transports using synchronous satellite for data relay between vehicles and ground station
Linear accelerator frequency control system
Damage control systems for detecting and locating overboard and onboard leak and damage modes on space stations
Space station thermal control system design, verifying radiator adequacy by parametric computer analysis with allowance for thermal coating degradation, vehicle attitude and other variables
Control systems are required in flight simulators to provide representative stick and rudder pedal characteristics. A system has been developed that uses electric dc torque motors instead of the more common hydraulic actuators. The torque motor system overcomes certain disadvantages of hydraulic systems, such as high cost, high power consumption, noise, oil leaks, and safety problems. A description of the torque motor system is presented, including both electrical and mechanical design as well as performance characteristics. The system develops forces sufficiently high for most simulations, and is physically small and light enough to be used in most motion-base cockpits.
A simplified controller system for a seven element phase array antenna is described, and information necessary for operation of the system is given.
The Representative Shuttle Environmental Control System (RSECS) provides a ground test bed to be used in the early accumulation of component and system operating data, the evaluation of potential system improvements, and possibly the analysis of Shuttle Orbiter test and flight anomalies. Selected components are being subjected to long term tests to determine endurance and corrosion resistance capability prior to Orbiter vehicle experience. Component and system level tests in several cases are being used to support flight certification of Orbiter hardware. These activities are conducted as a development program to allow for timeliness, flexibility, and cost effectiveness not possible in a program burdened by flight documentation and monitoring constraints.
Candidate vertical control systems (VCS) and face advancement systems (FAS) required to satisfactorily automate the longwall system were analyzed and simulated in order to develop an overall longwall system configuration for preliminary design.
An interferometer based phase control system for focusing and pointing the solar power satellite (SPS) power beam is discussed. The system is ground based and closed loop. One receiving antenna is required on Earth. A conventional uplink data channel transmits an 8 bit phase error correction back to the SPS for sequential calibration of each power module. Beam pointing resolution is better than 140 meters at the rectenna.