Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 453 for “"rotary"”.
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High bandwidth rotary fast tool servos and a hybrid rotary/linear electromagnetic actuator
… development of two high bandwidth short-stroke rotary fast tool servos and the hybrid rotary/linear electromagnetic actuator developed for one of them. Design insights, trade-off methodologies, and analytical tools are developed for precision mechanical systems, power and signal electronic …
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Different Motions of Rotary Instruments
The introduction of rotary instruments has been a major breakthrough in endodontics. This is in part, due to the NiTi composition of these instruments; which allows for successful cleaning and shaping of the root canal. The success of these instruments is primarily achieved through the different …
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Commissioning a 400 Hz rotary inverter
This dissertation covers the commissioning and testing of an aircraft's constant frequency alternator as the power supply for the Blue Parrot radar. The Blue Parrot is an X-band radar which forms part of the navigation and weapon-aiming system onboard the Buccaneer S-50 SAAF aircraft. The radar set …
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The microstructure of rotary-swaged rod
Thesis: B.S., Massachusetts Institute of Technology, Department of Metallurgy, 1961
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Noise from a rotary lawn mower.
Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Thesis. 1972. B.S.
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Rotary fast tool servo component design
… and implementation of the components of a novel rotary fast tool servo (RFTS). The RFTS enables diamond turning of rotationally asymmetric optics, with an emphasis on eyeglass lenses. These components include the rotary arm which supports the cutting tool, a high resolution angular sensor for …
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Wideband rotary transformer for VHF use
… has been applied to the design of a VHF rotary coupler that has a bandwidth ratio of 1000:1, and that requires no physical contact between the stator and rotor. A combination of balanced and unbalanced transmission line theory has been used to predict the performance of the coupler, and …
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Laboratory Test Program of Rotary Plate Sprinklers
<br>Sprinkler irrigation is used to supplement natural rainfall on cultivated lands. In 1999 there were approximately 63.0 million irrigated acres in the United States of which 48.5% were under sprinkler irrigation (Irrigation Journal, 2000). Significant portions of these sprinkler systems are …
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Finite Element Model Updating for Rotary Machinery
… develop a mathematical model that represents a rotary machine. Experimental data was used to define a finite element model (FEM). In order to obtain the experimental data, the rotary machine had to be balanced. An impact hammer test made it possible to obtain frequency response functions (FRF). …
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Mathematical model of a cement rotary kiln.
Thesis: B.S., Massachusetts Institute of Technology, Department of Chemical Engineering, 1967
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Metrology techniques for compound rotary-linear motion
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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Analysis and design of a rotary compressor
Thesis: B.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1978
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Design of an unloader for rotary compressors
The capacity of rolling piston type rotary compressors is typically varied by using variable speed motor drives. That entails the use of high cost electronics. This study explores an alternative means of achieving variable capacity while keeping motor speed constant, by lifting the vane …
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Investigation of reverse plumbing in rotary seals
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2003.
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Rotary-linear axes for high speed machining
… design, analysis, fabrication, and control of a rotary-linear axis; this axis is a key subsystem for high speed, 5-axis machine tools intended for fabricating centimeter-scale parts. The rotary-linear axis is a cylinder driven independently in rotation and translation. This hybridization …
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Reliability Assessment of Rolling Piston Rotary Type Compressos
… is a lack of lubrication. In a rolling piston rotary compressor, the most vulnerable regions are the vane and roller contact area, and the shaft and journal bearing area. As the amount of wear increases, leakage through the clearances inside the compression compartment increases as well. An …
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