검색연산자 | 기능 | 검색시 예 |
---|---|---|
() | 우선순위가 가장 높은 연산자 | 예1) (나노 (기계 | machine)) |
공백 | 두 개의 검색어(식)을 모두 포함하고 있는 문서 검색 | 예1) (나노 기계) 예2) 나노 장영실 |
| | 두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색 | 예1) (줄기세포 | 면역) 예2) 줄기세포 | 장영실 |
! | NOT 이후에 있는 검색어가 포함된 문서는 제외 | 예1) (황금 !백금) 예2) !image |
* | 검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색 | 예) semi* |
"" | 따옴표 내의 구문과 완전히 일치하는 문서만 검색 | 예) "Transform and Quantization" |
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) | B64C-011/20 B64C-011/00 |
미국특허분류(USC) | 416/145; 416/233 |
출원번호 | UP-0249602 (2005-10-13) |
등록번호 | US-7581929 (2009-09-16) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 3 인용 특허 : 7 |
A balance system for a rotational airfoil assembly includes a bulkhead, an elongated member, a support member and at least one balance weight. The elongated member extends through the bulkhead along a bore toward an airfoil tip segment of the airfoil assembly. The balance weights are mounted to a tip segment of the elongated member positioned within the bore outboard of an airfoil mid-span segment of the airfoil assembly. A reduced quantity of weight is required to balance the airfoil assembly because of the location of the balance weights outside of the...
What is claimed is: 1. A rotational airfoil assembly, comprising: an airfoil which defines a bore along a longitudinal axis, said airfoil includes an airfoil root segment and an airfoil tip segment; a support located within said airfoil, said support located between said airfoil root segment and said airfoil tip segment; a bulkhead located within said airfoil root segment; an elongated member that defines a first diameter, said elongated member mounted within said bore, said elongated member includes a flange opposite a tip segment which defines a secon...