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 |
---|---|
국제특허분류(IPC7판) | B64D-003/02 |
미국특허분류(USC) | 273/361 |
출원번호 | US-0894924 (1978-04-10) |
발명자 / 주소 | |
출원인 / 주소 | |
인용정보 | 피인용 횟수 : 10 인용 특허 : 0 |
The following specification discloses an aerial gunnery target that is adapted to be towed by an aircraft at high speeds for gunnery training and aircraft weapons qualifications. The assembly comprises a multiplicity of strands or cords such as twisted and plyed polypropylene lines. Each of said strands is secured at the forward end on a towing frame having various configurations which include circles, bars, radial extensions, and other configurations, including hexagons and triangles. The towing frame is pulled by means of a conventional towing cable an...
An aerial gunnery target that is towed behind an aircraft comprising: a towing frame defining a structure having at least one member outside of its central axis adapted for attachment to a cable that is towed behind an aircraft; and, a plurality of elongated non-woven strand members attached to and extending from said towing frame structure forming a substantially pre-established outline having a cross section substantially conforming to the structure to which they are attached when said target is towed at speeds compatible with said towing aircraft and ...