F
F. F. Ehrich
Researcher at Massachusetts Institute of Technology
Publications - 9
Citations - 850
F. F. Ehrich is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Turbine & Turbomachinery. The author has an hindex of 9, co-authored 9 publications receiving 830 citations.
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Proceedings ArticleDOI
Micro-heat engines, gas turbines, and rocket engines -the mit microengine project-
Alan H. Epstein,Stephen D. Senturia,O. Al-Midani,G. Anathasuresh,Arturo A. Ayon,Kenneth S. Breuer,Kuo-Shen Chen,F. F. Ehrich,E. M. Esteve,Luc G. Fréchette,G. Gauba,Reza Ghodssi,C. Groshenry,Stuart A. Jacobson,Jack L. Kerrebrock,Jeffrey H. Lang,C. C. Lin,A. P. London,J. Lopata,A. Mehra,J. O.Mur Miranda,Steven F. Nagle,D. J. Orr,E. S. Piekos,Martin A. Schmidt,G. Shirley,S.M. Spearing,Chuan Seng Tan,Y. S. Tzeng,L. A. Waitz +29 more
TL;DR: The work in progress on microelectrical and mechanical systems (MEMS)-based gas turbine engines, turbogenerators, and rocket engines currently under development at MIT is described in this paper.
Power MEMS and Microengines
Alan H. Epstein,Stephen D. Senturia,G. K. Ananthasuresh,Arturo A. Ayon,Kenneth S. Breuer,Kuo-Shen Chen,F. F. Ehrich,Gautam Gauba,Reza Ghodssi,C. Groshenry,Stuart A. Jacobson,Jeffrey H. Lang,C. C. Lin,A. Mehra,Jose Oscar Mur-Miranda,Steve Nagle,D. J. Orr,Ed Piekos,Martin A. Schmidt,Gregory Shirley,Mark S. Spearing,Choon S. Tan,Sheng-Yang Tzeng,Ian A. Waitz +23 more
Abstract: MIT is developing a MEMS-based gas turbine generator. Based on high speed rotating machinery, this 1 cm diameter by 3 mm thick SiC heat engine is designed to produce 10-20 W of electric power while consuming 10 grams/hr of H/sub 2/. Later versions may produce up to 100 W using hydrocarbon fuels. The combustor is now operating and an 80 W micro-turbine has been fabricated and is being tested. This engine can be considered the first of a new class of MEMS device, power MEMS, which are heat engines operating at power densities similar to those of the best large scale devices made today.
Journal ArticleDOI
High-speed microfabricated silicon turbomachinery and fluid film bearings
Luc G. Fréchette,Stuart A. Jacobson,Kenneth S. Breuer,F. F. Ehrich,Reza Ghodssi,R. Khanna,Chee Wei Wong,Xin Zhang,Martin A. Schmidt,Alan H. Epstein +9 more
TL;DR: In this paper, a single-crystal silicon micromachined air turbine supported on gas-lubricated bearings has been operated in a controlled and sustained manner at rotational speeds greater than 1 million revolutions per minute, with mechanical power levels approaching 5 W.
Proceedings ArticleDOI
Power MEMS and microengines
Alan H. Epstein,Stephen D. Senturia,G. Anathasuresh,Arturo A. Ayon,Kenneth S. Breuer,Kuo-Shen Chen,F. F. Ehrich,G. Gauba,Reza Ghodssi,C. Groshenry,Stuart A. Jacobson,Jeffrey H. Lang,C.-C. Mehra,J. O.Mur Miranda,Steven F. Nagle,D. J. Orr,E. S. Piekos,Martin A. Schmidt,G. Shirley,S.M. Spearing,Chuan Seng Tan,Y. S. Tzeng,Ian A. Waitz +22 more
TL;DR: In this article, the first power MEMS-based gas turbine generator is presented, which can produce 10-20 W of electric power while consuming 10 grams/hr of H/sub 2.
Proceedings ArticleDOI
Demonstration of a Microfabricated High-Speed Turbine Supported on Gas Bearings
Luc G. Fréchette,Stuart A. Jacobson,Kenneth S. Breuer,F. F. Ehrich,Reza Ghodssi,Ravi Khanna,Chee Wei Wong,Xin Zhang,Martin A. Schmidt,Alan H. Epstein +9 more
TL;DR: Lin et al. as discussed by the authors used a microbearing rig to operate a single-crystal silicon air turbine supported on gas lubricated bearings at rotational speeds greater than 1 million rpm and power levels approaching 5 W. This was the first micromachine to operate at circumferential tip speeds of hundreds of meters per second, comparable to conventional scale turbomachinery.