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) | B64D-041/00 |
미국특허분류(USC) | 244/58 ; 244/1185 ; 244/53A ; 98/15 |
출원번호 | US-0873026 (1986-06-11) |
발명자 / 주소 | |
출원인 / 주소 | |
인용정보 | 피인용 횟수 : 80 인용 특허 : 1 |
The multifunction power system is a combination auxiliary power unit, environmental control system, engine start system, and emergency power system for an aircraft. The system is essentially a four-wheel auxiliary power unit comprising two compressors driven by one turbine by means of a common shaft and in addition a free turbine. The pressurized flow from the second compressor can be directed to parallel combustors and thereafter to the two turbines. A starter-generator and motor are coupled to the compressor drive shaft and the free turbine is used to ...
A multifunction power system for an aircraft, the aircraft having at least one engine and at least one compartment requiring conditioned air, the system comprising: a drive shaft; a compressor means coupled to said drive shaft, said compressor means having an inlet coupled to the exterior of the aircraft and an outlet; a first turbine coupled to said drive shaft for driving said compressor means; an electric motor coupled to said drive shaft; a starter-generator coupled to said drive shaft; a first duct assembly having a first end coupled to said outlet ...