current attitude and specification of a desired attitude. Before and during attitude control can be performed, spacecraft attitude determination must be...

and celestial mechanics). It cannot be reduced to simply attitude control; real spacecraft do not have steering wheels or tillers like airplanes or ships...

the mission profile. Spacecraft subsystems are mounted in the satellite bus and may include attitude determination and control (variously called ADAC...

Markley, F. L. and Crassidis, J. L. Fundamentals of Spacecraft Attitude Determination and Control, Springer 2014 Libbus, B. and Simons, G. and Yao, Y. Rotating...

time, of the vehicle's location and velocity (the "state vector") as well as its attitude.[citation needed] Control refers to the manipulation of the...

The attitude determination and control subsystem (ADCS) is used to stabilize (detumbling) or change the attitude (orientation) of the spacecraft. There...

represented the state of practice in spacecraft attitude determination before the advent of Wahba's problem and its several optimal solutions. Covariance...

Uncrewed spacecraft or robotic spacecraft are spacecraft without people on board. Uncrewed spacecraft may have varying levels of autonomy from human input...

systems on-board a spacecraft are embedded systems and include attitude determination and control, communications, command and telemetry, and computer systems...

Addison–Wesley. ISBN 0-201-02918-9. Wertz, James R. (1980). Spacecraft Attitude Determination and Control. D. Reidel. ISBN 90-277-1204-2. Schmidt, J.; Niemann...

torquer (also known as a torque rod) is a satellite system for attitude control, detumbling, and stabilization built from electromagnetic coils. The magnetorquer...

orientation. For fine attitude control, the S-band antenna feed was mounted slightly off-axis. This offset feed combined with the spacecraft spin introduced...

Landis Markley and John L. Crassidis, Chapter 3.3, "Attitude Dynamics," p. 89; Fundamentals of Spacecraft Attitude Determination and Control, Springer Technology...

from rollers and held out by centrifugal forces as it rotated. The spacecraft's attitude and direction were to be completely controlled by changing the...

databases are used to determine spacecraft orientation. A typical star catalogue for high-fidelity attitude determination is originated from a standard...

(1978), "Appendix 1", in Wertz, James R. (ed.), Spacecraft Attitude Determination and Control, Astrophysics and Space Science Library, vol. 73, Dordrecht,...

rigid body dynamics, rocket vehicle dynamics, and attitude control. Control theory and spacecraft control systems are less thoroughly covered. The textbook...

command to the spacecraft. All booster technicians were employed at the Marshall Space Flight Center and reported to JSC for the launches. Control officer The...

physicist and aerospace engineer, whose work contributed significantly to spacecraft attitude determination. In 1977 he joined the Attitude Systems Operation...

trajectory and to transmit high-resolution photographs of the lunar surface during the final minutes of flight up to impact. The spacecraft carried six...

Spacecraft with Thrust, Relnav, Attitude and Crosslink (or FASTRAC) is a pair of nanosatellites (respectively named Sara-Lily and Emma) developed and...

report). NASA. 1962. D-608. Scott R. Starin and John Eterno (January 2011). "Attitude Determination and Control Systems" (PDF). NASA. "General Description...

Virginia. AeroAstro was responsible for the spacecraft bus, including power, communications, attitude control, and computers. The instrument complement for...

significantly faster and reliable in practical applications, and it is used for attitude determination problem in fields such as robotics and avionics. Wahba's...

fired at perigee. Attitude determination and control used sun pulse and IR Earth sensor data in the telemetry to determine the spacecraft orientation. The...

troubled spacecraft may be forced to use less than its normal transmitter power, attitude control problems may preclude the use of high-gain antennas, and recovering...

A flight spare is a copy of a spacecraft or spacecraft part which is held in reserve in case it is needed for the mission. Flight spares are built to the...

three-astronaut spacecraft, and later was dedicated to Pres. Kennedy's national goal for NASA in the 1960s, of "landing a man on the Moon and returning him...

mode of the satellite, monitoring and control of energy resources, control of attitude determination sub-system and performance of telecommands received...

modifications were made to the spacecraft based on lessons learned from the operations of Helios-A. The small engines used for attitude control were improved. Changes...