An assessment of the aerodynamic, thermodynamic, and manufacturing issues for the design, development, and microfabrication of a demonstration micro engine
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2000.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2005
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| Online Access: | http://hdl.handle.net/1721.1/8822 |
| _version_ | 1826198542313586688 |
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| author | Protz, Jonathan M. (Jonathan Michael) |
| author2 | Alan H. Epstein. |
| author_facet | Alan H. Epstein. Protz, Jonathan M. (Jonathan Michael) |
| author_sort | Protz, Jonathan M. (Jonathan Michael) |
| collection | MIT |
| description | Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2000. |
| first_indexed | 2024-09-23T11:06:30Z |
| format | Thesis |
| id | mit-1721.1/8822 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T11:06:30Z |
| publishDate | 2005 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/88222019-04-10T17:36:43Z An assessment of the aerodynamic, thermodynamic, and manufacturing issues for the design, development, and microfabrication of a demonstration micro engine Protz, Jonathan M. (Jonathan Michael) Alan H. Epstein. Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Aeronautics and Astronautics. Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2000. "September 2000." Includes bibliographical references. Silicon microfabrication is an established technology for the manufacture of integrated circuits and microelectromechanical systems (MEMS) devices such as pressure transducers and accelerometers. Recent advances in silicon microfabrication technology allow the possibility of designing high-precision mechanical devices for power conversion. Micro gas turbine engines (microengines) are one particular application of this technology. These tiny jet engines have immediate application as propulsion systems for Micro UAVs Other envisioned applications include portable electrical power generation for commercial, consumer, and military uses A microengine-based power or propulsion system could offer more than 10x the performance of a battery of the same weight. This would make it an enabling technology for longduration portable computers, high-power mobile phones, and other portable power applications. This thesis describes an assessment of the aerodynamic, thermodynamic, and manufacturing issues associated with the design, development, and microfabrication of an all-silicon demonstration microengine. The design goal is the simplest feasible engine that can demonstrate the micro gas turbine engine concept. This demo microengine integrates high-speed, low Reynold's number turbomachinery, high-speed micro gas bearings, a compact hydrogen combustor, and an innovative turbine cooling scheme into a quartersized turbojet engine with a target thrust of 10 grams. Due to the scale of the device and the nature of the microfabrication process, the engine components are tightly coupled and the design involved a number of system trades not normally encountered in conventional engines. This thesis addresses several of these key design trades and identifies thermo-structural design and manufacturing constraints as the two principal limitations on current microengine design. The thesis also discusses the fabrication development effort and results culminating in a micro turbocharger that has been tested to speeds of up to 30,000 RPM. Rotor imbalance was identified as the probable limit on current operation. Recommendations for future work include development of advanced turbine cooling schemes to improve device efficiency and development improved fabrication capabilities to reduce rotor imbalance. by Jonathan M. Protz. Ph.D. 2005-08-23T15:37:06Z 2005-08-23T15:37:06Z 2000 Thesis http://hdl.handle.net/1721.1/8822 48384436 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 191 p. 13955673 bytes 13955430 bytes application/pdf application/pdf application/pdf Massachusetts Institute of Technology |
| spellingShingle | Aeronautics and Astronautics. Protz, Jonathan M. (Jonathan Michael) An assessment of the aerodynamic, thermodynamic, and manufacturing issues for the design, development, and microfabrication of a demonstration micro engine |
| title | An assessment of the aerodynamic, thermodynamic, and manufacturing issues for the design, development, and microfabrication of a demonstration micro engine |
| title_full | An assessment of the aerodynamic, thermodynamic, and manufacturing issues for the design, development, and microfabrication of a demonstration micro engine |
| title_fullStr | An assessment of the aerodynamic, thermodynamic, and manufacturing issues for the design, development, and microfabrication of a demonstration micro engine |
| title_full_unstemmed | An assessment of the aerodynamic, thermodynamic, and manufacturing issues for the design, development, and microfabrication of a demonstration micro engine |
| title_short | An assessment of the aerodynamic, thermodynamic, and manufacturing issues for the design, development, and microfabrication of a demonstration micro engine |
| title_sort | assessment of the aerodynamic thermodynamic and manufacturing issues for the design development and microfabrication of a demonstration micro engine |
| topic | Aeronautics and Astronautics. |
| url | http://hdl.handle.net/1721.1/8822 |
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