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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0511050 (1990-04-19) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 16 인용 특허 : 0 |
The ring-shaped propeller, in its basic form, comprises a multi-blade propeller and a structurally continuous ring-shroud attached to the tips of the blades. The shroud has an airfoil cross-section which varies from blade tip to blade tip, the segments between adjacent blades being identical. The ai
A ring-shrouded propeller comprising; a hub, a plurality of blades radially attached to said hub and at least one ring shroud attached to said blades, said ring-shroud having sections, each section extending between two of said adjacent blades and having a first end at one of said two blades and a s
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