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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0338179 (1989-04-14) |
발명자 / 주소 |
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인용정보 | 피인용 횟수 : 23 인용 특허 : 0 |
A helium purification system for use with lighter-that-air airships has a catalytic purification stage for removing oxygen from the lift gas, and if desired, a nitrogen removal stage. Impure lift gas is passed through the catalytic purification stage which includes catalytic means for reacting hydro
A method of at least periodically increasing the lift capacity of a lighter-than-air airship having at least one lift compartment containing helium to provide lift capacity for said airship which comprises, inducing flow of a portion of the helium from said lift compartment through a confined path,
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