On a function space approach to a class of linear stochastic optimal control systems
Function space approach to linear stochastic optimal control systems
SEARCH · Search NASA
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.
Function space approach to linear stochastic optimal control systems
Sensitivity function in time domain defined for control system design
Correction coefficients for time response of hybrid control systems with digital feedback elements containing quantized coefficients
Fluidic temperature control system for liquid cooled space suits
Solar pointing Aerobee rocket control system
Attitude and propellant flow control system for liquid propellant rocket vehicles
Quasi-optimum design of aircraft landing control system, performing worst case simulation for jet transport
Time response deviation correction in hybrid computer control systems with digital feedback elements containing quantized coefficients
Passive thermal control system design of SERT II nonspinning satellite based on 534-node analytical model calibrated against test data
Relay control systems stability bound determination in nonphase variable form, assuming unknown system parameters
Drive mechanism for operating reactance attitude control system for aerospace bodies
Development and characteristics of attitude and pointing control system for Skylab space station
Performance characteristics of improved servoamplifier for electrohydraulic control systems
Development of attitude control system for sounding rocket stabilization during ballistic phase of flight
Paint absorptance values effect on passive thermal control system primary component, using calibrated computer satellite model
Space station thermal control systems design, discussing pumped loop, air cooled semipassive and heat pipe systems
Dynamics and control, stability, and guidance analyses are summarized for the asymmetrical booster ascent guidance and control system design studies, performed in conjunction with space shuttle planning. The mathematical models developed for use in rigid body and flexible body versions of the NASA JSC space shuttle functional simulator are briefly discussed, along with information on the following: (1) space shuttle stability analysis using equations of motion for both pitch and lateral axes; (2) the computer program used to obtain stability margin; and (3) the guidance equations developed for the space shuttle powered flight phases.
A regenerable CO2 and humidity control system is presently being developed for potential use on Shuttle as an alternate to the baseline Lithium Hydroxide (LiOH) system. The system utilizes a sorbent material (designated 'HS-C') to adsorb CO2 and water vapor from the cabin atmosphere and desorb the CO2 and water vapor overboard when exposed to a space vacuum. Past development programs concentrated on material development and breadboard system fabrication and testing. The present program calls for the design of a flight prototype system capable of integration into the Shuttle vehicle and the development of major components. This paper will show that a regenerable system utilizing HS-C material trades even with the shuttle LiOH system for the baseline four-man, seven-day mission and offers increased savings up to 448 kg for a seven-man, 30-day mission.