Results 251 to 260 of about 500,409 (312)

Self-termination from a child guidance center

Community Mental Health Journal, 1975
Fifty-two household interviews were held with families who had self-terminated from a child guidance center. The purpose of these interviews was to determine reasons for self-termination and to measure the effectiveness of the center's program. Findings indicate that the most common reason for self-termination was (1) parents' expectations of therapy ...
O W, Farley, K D, Peterson, G, Spanos
openaire   +2 more sources

Terminal Guidance System for Satellite Rendezvous

Journal of the Aerospace Sciences, 1960
This paper assumes a requirement for an unmanned multiunit satellite to be assembled in orbit. The requirement to be met is to bring the satellites together so tha t they do not collide but actually rendezvous. The equations of motion of the rendezvous satellite in a relative coordinate system are derived and used to compute a final injection velocity ...
Clohessy, W. H., Wiltshire, R. S.
openaire   +2 more sources

Terminal Guidance Algorithm for Ramjet-Powered Missiles

Journal of Guidance, Control, and Dynamics, 1996
Theterminal guidancedesign problem fora long-rangebank-to-turn (BTT)ramjetmissileinvolvesa completely coupled pitch ‐yaw‐roll nonlinear dynamics model. Because of these nonlinear dynamics, an optimal solution for acceleration and roll-rate commands can be found only by numerical methods for solving two-point boundary value problems.
Romesh Aggarwal, Charles Moore
openaire   +1 more source

Terminal area guidance incorporating heavy weather

Guidance, Navigation, and Control Conference, 1997
Inclement weather is a major cause of air transportation delays, and the majority of this cost is incurred in terminal areas. Even though current sensor technology, meteorological methods, and displays are capable of producing accurate and timely mesoscale nowcasts in the terminal area, controllers still find it difficult to vector aircraft around ...
Jimmy Krozel   +5 more
openaire   +1 more source

Nonlinear Control for Missile Terminal Guidance

Journal of Dynamic Systems, Measurement, and Control, 2000
Variable Structure Control (VSC) technique is applied to the design of robust homing missile guidance laws. In the design procedure, the target’s maneuver is assumed to be unpredictable and is considered as disturbances. Guidance laws are then proposed to achieve the interception performance for both cases of longitude-axis control being available and ...
Der-Cherng Liaw   +2 more
openaire   +1 more source

Conditional-Switching Terminal Guidance (A Terminal Guidance Technique for Satellite Rendezvous)

IRE Transactions on Aeronautical and Navigational Electronics, 1960
This is a terminal guidance technique for satellite rendezvous utilizing a constant thrust rocket motor, a computer, and attitude control. For any given thrust level, this technique can reduce the relative range to any desired value in a minimum of time for an interceptor on a collision course.
openaire   +1 more source

Optimal terminal guidance with constraints at final time

Guidance and Control Conference, 1976
Using Eq. (5), it may be seen that for propulsive gases having, for example, seven active degrees of freedom, and with \l/= I/sec, 90% of the available impulse is released in about */3 sec. An equivalent part of the terminal velocity occurs during that time interval if the mass faction of the working fluid is initially small.
Randy J. York, Harold L. Pastrick
openaire   +1 more source

Bezier Curve Path Planning for Parafoil Terminal Guidance

AIAA Aerodynamic Decelerator Systems (ADS) Conference, 2013
Autonomous parafoil terminal guidance plays a critical role in landing accuracy but is inherently difficult due to underactuation and path disturbances caused by winds. Terminal path planners must generate flight paths that deliver the parafoil as close as possible to the destination while landing into the wind.
Lee Fowler, Jonathan Rogers
openaire   +1 more source

Home - About - Disclaimer - Privacy