scholarly journals Final Results for the GRC Supporting Technology Development Project for the 110-Watt Stirling Radioisotope Generator (SRG110)

2007 ◽  
Author(s):  
Jeffrey G. Schreiber ◽  
Lanny G. Thieme
Keyword(s):  
Technology Development ◽  
Development Project ◽  
Technology Development Project

scholarly journals Emission Reduction of Fuel-Staged Aircraft Engine Combustor Using an Additional Premixed Fuel Nozzle

2013 ◽  
Vol 135 (3) ◽  
Author(s):  
Takeshi Yamamoto ◽  
Kazuo Shimodaira ◽  
Seiji Yoshida ◽  
Yoji Kurosawa
Keyword(s):  
Technology Development ◽  
Pressure Ratio ◽  
Aircraft Engine ◽  
Development Project ◽  
Civil Aviation ◽  
Test Results ◽  
Technology Development Project ◽  
Fuel Nozzle ◽  
Conducting Research ◽  
Japan Aerospace Exploration Agency

The Japan Aerospace Exploration Agency (JAXA) is conducting research and development on aircraft engine technologies to reduce environmental impact for the Technology Development Project for Clean Engines (TechCLEAN). As a part of the project, combustion technologies have been developed with an aggressive target that is an 80% reduction over the NOx threshold of the International Civil Aviation Organization (ICAO) Committee on Aviation Environmental Protection (CAEP)/4 standard. A staged fuel nozzle with a pilot mixer and a main mixer was developed and tested using a single-sector combustor under the target engine's landing and takeoff (LTO) cycle conditions with a rated output of 40 kN and an overall pressure ratio of 25.8. The test results showed a 77% reduction over the CAEP/4 NOx standard. However, the reduction in smoke at thrust conditions higher than the 30% MTO condition and of CO emission at thrust conditions lower than the 85% MTO condition are necessary. In the present study, an additional fuel burner was designed and tested with the staged fuel nozzle in a single-sector combustor to control emissions. The test results show that the combustor enables an 82% reduction in NOx emissions relative to the ICAO CAEP/4 standard and a drastic reduction in smoke and CO emissions.

Special Issue on Strategic Development of Advanced Robotics Elemental Technologies

2011 ◽  
Vol 23 (6) ◽  
pp. 906-906
Author(s):  
Shigeoki Hirai ◽  
Fumi Seto ◽  
Kazuhito Yokoi
Keyword(s):  
Technology Development ◽  
Development Project ◽  
Practical Work ◽  
Special Issue ◽  
Strategic Development ◽  
Robot Systems ◽  
Technology Development Project ◽  
Gate System ◽  
Advanced Robotics ◽  
Special Environment

The Strategic Development of Advanced Robotics Elemental Technologies (STARET), a METI (Ministry of Economy, Trade and Industry) project conducted under a 5-year plan starting in 2006, was a nonconventional, unique, mission-oriented effort concerning the stage gate system. METI’s technology development project R&D is usually pursued bottom up. It is where most advanced modern technologies are selected and developed for practical use. The STARET, however, has pursued development top down without selecting a specific technology. Potentially practical work is selected from the view of businesses using robots. The target here is defined as a mission in which robot systems are built combining optimum technologies. Practical work has focused on two manufacturing themes, three service field themes, and two special environment themes. These were selected for new ranges of purpose, new marketability, and a public nature. This special issue features STARET topics focusing on research outcomes of robot systems intended for practical use. Topics on practical technologies related to the above themes were sought, resulting in many papers from nonproject participants in addition to those from STARET participants. The regular standard was applied to the peer review and articles were chosen for originality. We expect this special issue will help speed up and promote the research and development of robots intended for practical use.

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