Gyro noise study program Final report
Reducing noise induced by turbulent windage torques within gimbal of fluid rotor gyroscope
Kraus, G. M.↗
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Results for “gyroscope”
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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Use of magnetic torque for CMG momentum management
Magnetic torque for control moment gyroscope momentum management with AAP workshops
Levidow, W.↗
Dynamic precession damper for spin stabilized vehicles Patent
Dynamic precession damping of spin-stabilized vehicles by using rate gyroscope and angular accelerometer
Garner, H. D.↗
Space vehicle attitude control Patent
Spacecraft attitude control system using solar and earth sensors, gyroscopes, and jet actuators
Acord, J. D.↗
High accuracy precession measurement with an autometric gyro
High accuracy precession measurement with autometric gyroscopes
Frisch, D. H.↗
On the stability of linear discrete dynamic systems
Equilibria stability of linear discrete dynamic systems involving elastic, nonconservative, dissipative and gyroscopic forces, using Liapunov-type energy method
Walker, J. A.↗
Systems for dead-reckoning navigation and for simulation of instrumental error - Concepts
Navigational system for manned lunar vehicles is intended for travel totaling 30 km within 5 km of home base, total distance traveled must be indicated with 2 percent accuracy. Hardware includes two two-degrees-of-freedom gyroscopes, odometers, tachometers, and signal processing equipment.
Green, W. L.↗
Study of Hydrodynamic Gyro Squeeze-film Bearing Final Report
Squeeze film lubrication for gyroscope wheels and behavior of hydrodynamic spiral grooved spin axis bearing
Chiang, T.↗
Piezoelectric pump Patent
Piezoelectric pump for supplying fluid at high frequencies to gyroscope fluid suspension system
Anderson, R. F.↗
Control moment gyro for Skylab
Skylab control moment gyroscope inner gimbal design and thermal vacuum and environmental tests
Fikes, E. H.↗
Design, fabricate, perform tests, and deliver ceramic envelopes in support of electrostatic gyro development Final report, 24 Jun. 1970 - 15 Jun. 1971
Design, fabrication and tests of alumina ceramic envelope for cryogenic electrically-suspended gyroscope
Mellum, L. C.↗
Wheel-package problems in Apollo 25-IRIG
Service life and manufacturing yield of Apollo 25-IRIG /inertial reference integrating gyroscope/ ball bearing
Frasier, C. W.↗
Electronic implementation for semiactive attitude control system
Delta booster second stage packaged attitude control three-axis system, discussing electronic implementation for gyroscopic action control
Fowler, R. Z.↗
Comment on the spin precession of the Schiff satellite in the Brans-Dicke theory
Orbiting gyroscope de Sitter precession in different versions of Brans-Dicke theory, discussing term arising from anomalous scalar force in equations of motion
Morganstern, R. E.↗
Some applications of ferrofluid magnetic colloids
Subdomain magnetic particles ferrofluid colloidal dispersions, for energy conversion devices, viscous dampers, accelerometers, gyroscope supports and specific gravity meters
Kaiser, R.↗
Pioneer-class mission capabilities
Pioneer Jupiter spacecraft, noting low weight, radioisotope thermoelectric generators and gyroscopic stabilization by spinning with antenna pointed at earth
Jackson, R. W.↗
Dynamic behavior of the mercury damper
The dynamic behavior of the mercury nutation damper is investigated. Particular attention is paid to the eccentric annular mercury configuration, which is the final continuous ring phase that occurs in the operation of all mercury dampers. In this phase, damping is poorest, and the system is closely linear. During the investigation, the hydrodynamic problem is treated as three dimensional, and extensive use is made of a variational principle of least-viscous frictional power loss. A variational principle of least-constraint is also used to advantage. Formulas for calculating the behavior of the mercury damper are obtained. Some confirmatory experiments were performed with transparent ring channels on a laboratory gyroscope. Selected movie frames taken during wobble damping are shown along with the results of film measurements.
Crout, P. D.↗
Introduction to passive nutation dampers
Coning motion can prevent photographic and TV cameras and other oriented spacecraft experiments from maintaining a steady scan, and it can introduce a ripple in the high-gain communication system. Nutation dampers are used to remove this type of spacecraft instability. The first nutation damper flown in a missile for the stabilization of the gyroscope consisted of a hollow ring that was partially filled with mercury, and the sloshing of the mercury dissipated the nutational energy. A similar mercury-ring damper was used in the Pioneer 1 lunar probe in 1958 and became the first nutation damper to be used in space. Since then many types of nutation dampers have been designed for spin-stabilized spacecraft ranging in size from small scientific satellites to large space stations.
Herzl, G. C.↗