Results 51 to 60 of about 22,770 (227)

Single Axis Piezoceramic Gimbal [PDF]

open access: yesJournal of Intelligent Material Systems and Structures, 2001
This paper describes the fabrication, testing, and analysis of a single axis piezoceramic gimbal. The fabrication process consists of pre-stressing a piezoceramic wafer using a high-temperature thermoplastic polyimide and a metal foil. The differential thermal expansion between the ceramic and metal induces a curvature.
Garnett Horner, Barmac Taleghani
openaire   +1 more source

Economical High–Low Temperature and Heading Rotation Test Method for the Evaluation and Optimization of the Temperature Control System for High-Precision Platform Inertial Navigation Systems

open access: yesSensors, 2018
Inertial navigation systems (INSs) use the temperature control system to ensure the stability of the temperature of the inertial sensors for improving the navigation accuracy of the INSs.
Qiang Yang, Rong Zhang, Haixia Li
doaj   +1 more source

Subgravity simulator Patent [PDF]

open access: yes, 1967
Apparatus for training astronaut crews to perform on simulated lunar surface under conditions of lunar ...
Johnson, H. I., Trader, A. G.
core   +1 more source

Scaling of internal joint distance in the elbow of small‐ to medium‐sized mammals: Implications for range of motion analyses

open access: yesJournal of Anatomy, Volume 248, Issue 6, Page 950-971, June 2026.
We investigated the internal joint distances (IJDs) of the humero‐ulnar and humero‐radial joint, within a sample of 15 small‐ to medium‐sized mammals and report isometric results. We also found that joint poses had no effect on IJDs and that IJDs scale isometrically within small species.
Adrian Scheidt   +2 more
wiley   +1 more source

Low power control for magnetically suspended control moment gyro based on current adaptive adjustment‐gimbal angular velocity feedforward method

open access: yesIET Electric Power Applications, 2022
Magnetically suspended control moment gyro (MSCMG) outputs gyro moment by changing the direction of the rotor angular momentum to adjust the spacecraft attitude.
Jinji Sun, Jiye Zhao
doaj   +1 more source

Ball and socket joints provide accurate biaxial gimbal [PDF]

open access: yes, 1965
Ball-and-socket joints are used to connect two rotating inputs to orthogonally pivoted outputs.
Rouze, E. R.
core   +1 more source

Wildlife Responses to Drone Noise: A Preliminary Approach for Quantifying Disturbance During Single‐ and Dual‐Drone Flights

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
Single drone (a) and dual‐drone (a + b) setups used to assess behavioral responses to drone noise exposure. ABSTRACT Drones are increasingly being deployed to study wildlife; however, growing evidence indicates that drone noise can alter animal behavior and confound ecological data.
Saadia Afridi   +6 more
wiley   +1 more source

Ultra high resolution stepper motors design, development, performance and application [PDF]

open access: yes, 1979
The design and development of stepper motors with steps in the 10 arc sec to 2 arc min range is described. Some of the problem areas, e.g. rotor suspension, tribology aspects and environmental conditions are covered.
Moll, H., Roeckl, G.
core   +1 more source

Shock‐Assisted Flow Control System in Convergent‐Divergent Nozzle: A Numerical Study on Unconventional Protuberance With Different Geometry

open access: yesEngineering Reports, Volume 8, Issue 5, May 2026.
A numerical investigation using 3D RANS simulations demonstrates significant effects of protuberance geometry—cubic, cylindrical, spherical, and conical—on shock‐induced thrust vectoring in supersonic nozzles. Cubic protuberances provide the maximum jet deflection (˜2°) with negligible thrust reduction.
Mohammadreza Soufivand   +3 more
wiley   +1 more source

A precision bearing gimbal system for the Teal Ruby program [PDF]

open access: yes, 1980
A precision bearing gimbal system designed to allow a spaceborne infrared sensor to stare at points on the Earth while in orbit is described. The problems encountered, analytical tools and test methods used, and data applicable to users of similar ...
Lowry, C. H.
core   +1 more source

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