Study of flow induce vibration inside 3.5 inch hard disk drives
KKU Engineering Journal, 2014 This study focused on flow induced vibration of head stack assembly (HSA) in a 3.5 inch hard disk drive with 5 disks and 10 read/write heads. We studied the effects of air flow on gimbal flex and resonance on arm.
Wichitpon Seepangmon +1 more
doaj
Space shuttle orbital maneuvering system failure detection and identification software requirements (uncontrolled) [PDF]
Candidate designs and their software implementation are presented for the Orbital Maneuvering System (OMS) Failure Detection and Identification (FDI) algorithms in the Redundance Management (RM) module of the Space Shuttle Guidance, Navigation, and ...
Damario, L. A., Vullo, J. P.
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Description and performance of the Langley differential maneuvering simulator [PDF]
The differential maneuvering simulator for simulating two aircraft or spacecraft operating in a differential mode is described. Tests made to verify that the system could provide the required simulated aircraft motions are given.
Ashworth, B. R., Kahlbaum, W. M., Jr.
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Gravity referenced elevation encoder development [PDF]
Recent progress in the development of a gravity-sensor-based instrument for determining the elevation angle of DSN antennas is described. The benefits of such a system include the capability to locate the Gravity Referenced Elevation Encoder (GREE ...
Goddard, R. E.
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Definition and design of an experiment to test raster scanning with rotating unbalanced-mass devices on gimbaled payloads [PDF]
An experiment designed to test the feasibility of using rotating unbalanced-mass (RUM) devices for line and raster scanning gimbaled payloads, while expending very little power is described.
Alhorn, D. C. +2 more
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Design, fabrication and test of a 4750 Newton-meter-second double Gimbal control moment gyroscope [PDF]
The development of a prototype Control Moment Gyroscope (CMG) is discussed. Physical characteristics and the results of functional testing are presented to demonstrate the level of system performance obtained. Particular attention is given to how the man-
Blondin, Joseph +5 more
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Linear Covariance Analysis For Gimbaled Pointing Systems
, 2013 Linear covariance analysis has been utilized in a wide variety of applications. Historically, the theory has made significant contributions to navigation system design and analysis. More recently, the theory has been extended to capture the combined effect of navigation errors and closed-loop control on the performance of the system. These advancements
openaire +3 more sources
Experiment definition phase shuttle laboratory LDRL-10.6 experiment [PDF]
The 10.6 microns laser data relay link (LDRL 10.6) program was directed to applying optical communications to NASA's wideband data transmission requirements through the 1980's.
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Description and simulation of an integrated power and attitude control system concept for space-vehicle application [PDF]
An Integrated Power and Attitude Control System (IPACS) concept with potential application to a broad class of space missions is discussed. A description is given of the basic concept of combining the onboard energy storage and attitude control functions
Jacobs, K. L. +2 more
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The use of multi-sensor drone data for the development and validation of methods to track and characterize marine animals. [PDF]
Sci RepSexton KJ +5 more
europepmc +1 more source