Xem 1-20 trên 33 kết quả Propulsion
  • Tham khảo tài liệu 'lesson 13-the propulsion plant', ngoại ngữ, anh văn thương mại phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf6p vannghiamt07 08-07-2010 158 101   Download

  • There is an ever-increasing need to understand turbulent and multiphase combus- tion due to their broad application in energy, environment, propulsion, transporta- tion, industrial safety, and nanotechnology. More engineers and scientists with skills in these areas are needed to solve many multifaceted problems. Turbulence itself is one of the most complex problems the scientific community faces. Its complexity increases with chemical reactions and even more in the presence of multiphase flows.

    pdf897p namde01 11-04-2013 27 9   Download

  • Open Access Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Do horizontal propulsive forces influence the nonlinear structure of locomotion?

    pdf9p panasonic01 12-12-2011 20 2   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Do horizontal propulsive forces influence the nonlinear structure of locomotion?

    pdf9p panasonic08 06-01-2012 27 2   Download

  • Tham khảo sách 'propulsion theory', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf70p khangoc2394 25-08-2012 17 2   Download

  • NASA’s budget for fiscal year 2003 included funds to begin the Nuclear Systems Initiative focused on research into and development of enhanced capabilities in the general areas of spacecraft power and propulsion systems.

    pdf159p tom_123 14-11-2012 15 2   Download

  • 1 Throughout this report, we use the term “WT/PT facilities” to mean wind tunnel facilities and propulsion test facilities, that is, the type of NASA facilities we assessed. Since individual facilities within this designation can be either wind tunnel facilities, propulsion test facilities, or both, “WT/PT facilities” serves as a generic term to encompass them all. That being said, when a specific facility is talked about, for clarity, we refer to it as a proper

    pdf0p xuan2013 26-01-2013 12 1   Download

  • Xử lý ảnh số có nhiều ứng dụng thực tế. Một trong những ứng dụng sớm nhất là xử lý ảnh từ nhiệm vụ Ranger 7 tại phòng thí nghiệm Jet Propulsion vào những năm đầu của thập kỉ 60. Hệ thống chụp hình gắn trên tàu vũ trụ có một số hạn chế về kích thước và trọng lượng..

    pdf714p ptng13 25-06-2012 282 138   Download

  • Xử lý ảnh số có nhiều ứng dụng thực tế. Một trong những ứng dụng sớm nhất là xử lý ảnh từ nhiệm vụ Ranger 7 tại phòng thí nghiệm Jet Propulsion vào những năm đầu của thập kỷ 60

    pdf0p lesinam 19-05-2010 210 97   Download

  • The present “Solar Energy” science book hopefully opens a series of other first-hand texts in new technologies with practical impact and subsequent interest. They might include the ecological combustion of fossil fuels, space technology in the benefit of local and remote communities, new trends in the development of secure Internet Communications on an interplanetary scale, new breakthroughs in the propulsion technology and others.

    pdf440p kimngan_1 06-11-2012 67 29   Download

  • The Deep Space Communications and Navigation Systems Center of Excellence (DESCANSO) was established in 1998 by the National Aeronautics and Space Administration (NASA) at the California Institute of Technology’s Jet Propulsion Laboratory (JPL). DESCANSO is chartered to harness and promote excellence and innovation to meet the communications and navigation needs of future deep-space exploration.

    pdf169p toad_prince9x 30-09-2011 51 18   Download

  • The size and principal characteristics of a new ship are determined primarily by its mission or intended service. In addition to basic functional considerations, there are requirements such as stability, low resistance, high propulsive efficiency, and navigational limitations on draft or beam, all of which influence the choice of dimensions and form. Within these and other basic constraints, the ship’s structure must be designed to sustain all of the loads expected to arise in its seagoing environment.

    pdf250p aries23 29-09-2012 88 17   Download

  • Xử lý ảnh số có nhiều ứng dụng trong thực tế. Một trong những ứng dụng sớm nhất là xử lý ảnh từ nhiệm vụ Ranger 7 tại phòng thí nghiệm Jet Propulsion vào những năm đầu của thập kỷ 60. Hệ thống chụp hình gắn trên tàu vũ trụ có một số hạn chế về kích thước và trọng lượng, do đó ảnh nhận được bị giảm chất lượng như mờ, méo hình học và nhiễu nền

    pdf41p samsung_12 06-05-2013 25 17   Download

  • The permanent-magnet synchronous machine (PMSM) drive has emerged as a top competitor for a full range of motion control applications [1–3]. For example, the PMSM is widely used in machine tools, robotics, actuators, and is being considered in high-power applications such as vehicular propulsion and industrial drives. It is also becoming viable for commercial/residential applications. The PMSM is known for having high efficiency, low torque ripple, superior dynamic performance, and high power density.

    pdf10p daohuongthon 22-01-2010 65 15   Download

  • Vehicles that utilize more than one energy source for propulsion are usually termed hybrid vehicles. Although the onboard energy storage system (ESS) may be a flywheel or a hydraulic accumulator, most hybrid vehicles use chemical batteries or capacitors and are termed hybrid-electric vehicles. Fuel cells (FCs) may be used in hybrid-electric vehicles as primary power sources instead of conventional internal combustion engines (ICEs). In this article, ICE–battery hybrid transit buses are discussed specifically and contrasted with conventional drive buses. ...

    pdf16p congdat261 24-11-2010 60 14   Download

  • The recent fuel cell (FC) development worldwide has always been accompanied by a number of studies and projects investigating the applications of FCs onboard ships. Almost all possible FC types and different fuels such as hydrogen, natural gas (liquefied or pressurized), liquefied pressurized gas (LPG), methanol, and maritime diesel have been considered. These applications of FCs are still mainly focused on onboard power generation (OPU) and propulsion.

    pdf21p congdat261 24-11-2010 67 14   Download

  • They were an extraordinary group of talents: Wigner won a Nobel Prize in theoretical physics; Szilard was the first to see that a chain reaction based on neutrons was possible, initiated the Manhattan Project, but left physics to try to restrict nuclear arms; von Neumann could solve difficult problems in his head and developed the modern computer for more complex problems; von Kármán became the first director of NASA's Jet Propulsion Laboratory, providing the scientific basis for the U.S.

    pdf352p chipmoon 19-07-2012 58 11   Download

  • If science has the equivalent of a Bloomsbury group, it is the five men born at the turn of the twentieth century in Budapest: Theodore von Karman, Leo Szilard, Eugene Wigner, John von Neumann, and Edward Teller. From Hungary to Germany to the United States, they remained friends and continued to work together and influence each other throughout their lives. As a result, their work was integral to some of the most important scientific and political developments of the twentieth century.

    pdf352p kennybibo 14-07-2012 36 9   Download

  • There  is,  of  course,  some  potential  overlap within  these  sub‐sectors,  and  some  activities  could  fall  within more  than  one  of  the  three main  categories.  For  example,  Additional  Energy  Sources  could  potentially fall within the Renewable Energy sector, but has been include within Emerging Low Carbon  because  it  includes  mainly  new  energy  sources  and  those  that  are  still  in  development  (such  as  hydrogen fuel cells).

    pdf120p dangsuynghi 15-03-2013 25 8   Download

  • Fuel cell-powered aircraft have been of long-term interest to the aviation community because of their potential for improved performance and environmental compatibility. Only recently have improvements in the technological readiness of fuel cell power plants enabled the first aviation applications. Based on the results of conceptual design studies and a few technology demonstration projects, a widespread understanding of the importance of fuel cell power plants for near-term and future aviation applications has emerged.

    pdf7p congdat261 24-11-2010 34 7   Download

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