1 0 0 0 OA つば付きディフューザー風車による風力発電の高出力化
- 著者
- 大屋 裕二 烏谷 隆 桜井 晃
- 出版者
- 一般社団法人 日本航空宇宙学会
- 雑誌
- 日本航空宇宙学会論文集 (ISSN:13446460)
- 巻号頁・発行日
- vol.50, no.587, pp.477-482, 2002 (Released:2003-09-02)
- 参考文献数
- 11
- 被引用文献数
- 10 13
We have developed a new wind turbine system that consists of a diffuser with a broad-ring brim at the exit periphery and a conventional wind turbine inside it. The new wind turbine has demonstrated power augmentation for a given turbine diameter and wind speed by a factor of about 2–3 compared with a bare wind turbine. This is because a very low-pressure region due to strong vortex formation behind the broad brim draws more mass flow to a turbine inside the diffuser.
1 0 0 0 OA 速度場に分岐理論を適用したUAVの3次元フォーメーションフライト
- 著者
- 鈴木 真之 内山 賢治 Derek J. BENNET Colin R. MCINNES
- 出版者
- 一般社団法人 日本航空宇宙学会
- 雑誌
- 日本航空宇宙学会論文集 (ISSN:13446460)
- 巻号頁・発行日
- vol.59, no.693, pp.259-265, 2011 (Released:2011-10-21)
- 参考文献数
- 16
This paper attempts to design a guidance law using bifurcating potential fields and velocity field for a swarm of autonomous Unmanned Aerial Vehicles (UAVs). We consider an autonomous flight system that can create different three-dimensional swarming patterns so as to guarantee obstacle and vehicle collision avoidance. The guidance law, which is derived from a steering and repulsive potential field, can express variable geometric patterns for a formation flight of UAVs. The system can transition between different formation patterns by way of a simple parameter change. We also describe the design method for potential field that is flexible enough to respond to a variety of UAV performance and mission. Numerical simulation is performed to verify the validity of the proposed guidance law.
1 0 0 0 OA 半導体レーザーによる月氷探査ローバーモデルへの100 mエネルギー伝送実験
- 著者
- 武田 和也 河島 信樹
- 出版者
- 一般社団法人 日本航空宇宙学会
- 雑誌
- 日本航空宇宙学会論文集 (ISSN:13446460)
- 巻号頁・発行日
- vol.51, no.594, pp.393-396, 2003 (Released:2003-09-26)
- 参考文献数
- 7
- 被引用文献数
- 2 3
A full-size model of a lunar rover using a laser energy transportation to confirm directly the existence of ice on the moon has been fabricated and 100 m energy transportation test has been successfully performed. Problems to be solved to realize an actual lunar ice exploration mission are discussed.