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" |
국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) | B64B-001/02 |
미국특허분류(USC) | 244/30 ; 244/125 ; 244/36 ; 244/34A |
출원번호 | US-0360457 (1989-06-02) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 20 인용 특허 : 3 |
A rigid airship is disclosed herein having an annular or toroidal airfoil fuselage in front elevation for housing several elongated gas cells containing a buoyant gas such as helium. The fuselage includes at least two longitudinal and a plurality of transverse structural members for supporting the cells. A covering is provided about the fuselage comprising a multiplicity of fitted panels joined by retainer straps and locking nodes. The fuselage defines a central venturi having an annular intake and a contracted exit through which an elongated tapered tai...
A self-propelled rigid airship comprising: an elongated annular airfoil fuselage having an open-ended central passageway extending between its opposite ends; said central passageway constituting a venturi having an annular inlet at one end of said fuselage and an annular outlet at the other end of the fuselage; an elongated tail cone disposed in said venturi in coaxial relationship with said annular fuselage and having a forward end carrying a control compartment ahead of said inlet and a rear end carrying a propulsion apparatus adjacent said outlet; str...