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) | G01F-001/80 G01F-009/00 G01F-015/075 B64G-001/40 |
미국특허분류(USC) | 364/442 ; 73/86141 ; 364/510 |
출원번호 | US-0247434 (1988-09-12) |
우선권정보 | FR-0012631 (1987-09-11) |
발명자 / 주소 | |
출원인 / 주소 | |
인용정보 | 피인용 횟수 : 3 인용 특허 : 5 |
To monitor continuously the propellant consumption of a space vehicle equipped with a plurality of propulsion units operated by activator means according to activation instructions received by the activator means, the number N of activation instructions applied to each propulsion unit from a reference time and their cumulative duration S are memorized. The mass M of propellant consumed since the reference time by each propulsion unit is computed from the equation: M=f(N)+g(S) In this equation, f and g are independent predetermined functions. The masses c...
System for monitoring the propellant consumption of a space vehicle equipped with a plurality of propulsion units having activator means associated with said propulsion units and having a control unit adapted to apply activation instructions to said activator means, the system comprising: a logic unit in said control unit, a memory area of said logic unit adapted to store the number N and the cumulative duration S of said activation instructions from reference times, a power stage adapted to apply said activation instructions to said activator means acco...