Cargo fire-suppression agent distribution system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A62C-037/00
A62C-003/08
A62C-037/36
A62C-099/00
출원번호
US-0707616
(2012-12-07)
등록번호
US-9526931
(2016-12-27)
발명자
/ 주소
Ferguson, Douglas E.
Tutson, Arthur L.
출원인 / 주소
The Boeing Company
대리인 / 주소
McDonnell Boehnen Hulbert & Berghoff LLP
인용정보
피인용 횟수 :
0인용 특허 :
2
초록▼
A cargo-fire-suppression agent distribution system and methods are presented. A fire-warning signal indicating presence of fire in a cargo compartment onboard a class E cargo aircraft at a first altitude is received. An initial fire-suppression agent is distributed in the cargo compartment at the fi
A cargo-fire-suppression agent distribution system and methods are presented. A fire-warning signal indicating presence of fire in a cargo compartment onboard a class E cargo aircraft at a first altitude is received. An initial fire-suppression agent is distributed in the cargo compartment at the first altitude sufficient to suppress fire for an initial fire suppression time interval during a depressurization phase during which the class E cargo aircraft flies to a second altitude below the first altitude. A re-enforcing fire-suppression agent is distributed in the cargo compartment during a re-pressurization phase when a cabin altitude is below a predetermined cabin pressure level (PL) during which the class E cargo aircraft flies from the second altitude to a landing, after the initial fire-suppression time interval elapses. The re-enforcing fire-suppression agent distribution is maintained during a re-enforcing fire-suppression time interval.
대표청구항▼
1. A method for enhancing fire-suppression for a class E cargo aircraft, comprising: receiving a fire-warning signal indicating presence of fire in a cargo compartment onboard a class E cargo aircraft, the class E cargo aircraft receiving the fire-warning signal while the class E cargo aircraft is a
1. A method for enhancing fire-suppression for a class E cargo aircraft, comprising: receiving a fire-warning signal indicating presence of fire in a cargo compartment onboard a class E cargo aircraft, the class E cargo aircraft receiving the fire-warning signal while the class E cargo aircraft is at a first altitude;distributing an initial fire-suppression agent in the cargo compartment for an initial fire-suppression time interval, the initial fire-suppression time interval occurring during a depressurization phase during which the class E cargo aircraft flies to a second altitude below the first altitude and ending when the class E cargo aircraft reaches an oxygen level low enough to maintain fire-suppression;blocking distribution of any fire-suppression agent for a time interval in response to a determination that the aircraft has reached a predetermined low oxygen level sufficient to maintain fire-suppression, wherein the time interval follows the initial fire-suppression time interval;distributing a re-enforcing fire-suppression agent in the cargo compartment during a re-pressurization phase when a cabin altitude is below a predetermined cabin pressure level (PL) during which the class E cargo aircraft flies from the second altitude to a landing, after the initial fire-suppression time interval elapses; andmaintaining distribution of the re-enforcing fire-suppression agent during a re-enforcing fire-suppression time interval. 2. The method of claim 1, wherein the first altitude is about 11 km (36,000 feet) equivalent oxygen pressure altitude. 3. The method of claim 1, wherein the second altitude is about 7.6 km (25000 feet) equivalent oxygen pressure altitude. 4. The method of claim 1, wherein the predetermined cabin PL is equivalent to an atmospheric pressure at about 6.1 km (20,000 feet) equivalent oxygen pressure altitude. 5. The method of claim 1, wherein the initial fire-suppression time interval is about 5 minutes. 6. The method of claim 1, wherein the re-enforcing fire suppression time interval is about 23 minutes. 7. The method of claim 1, wherein the initial fire-suppression agent and the re-enforcing fire-suppression agent each comprises at least one of the group consisting of: an active agent, and Halon. 8. A cargo fire-suppression agent distribution system onboard a class E cargo aircraft comprising: a fire detector operable to receive a fire-warning signal indicating presence of fire in a cargo compartment, the class E cargo aircraft receiving the fire-warning signal while the class E cargo aircraft is at a first altitude;a fire-suppression agent time determination module operable to activate an initial fire suppression agent and a re-enforcing fire-suppression agent at a first activation time and a second activation time respectively; anda controller operable to: distribute an initial fire-suppression agent in the cargo compartment at the first altitude sufficient to suppress fire for an initial fire-suppression time interval, the initial fire-suppression time interval ending when the class E cargo aircraft reaches an oxygen level low enough to maintain fire-suppression and during which the class E cargo aircraft enters a depressurization phase and flies to a second altitude below the first altitude;block distribution of any fire-suppression agent for a time interval in response to a determination that the aircraft has reached a predetermined low oxygen level sufficient to maintain fire-suppression, wherein the time interval follows the initial fire-suppression time interval;distribute a re-enforcing fire-suppression agent in the cargo compartment after the initial fire-suppression time interval elapses during a re-pressurization phase, when a cabin altitude is below a predetermined cabin pressure level (PL) and the class E cargo aircraft descends from the second altitude to a landing; andmaintain distribution of the re-enforcing fire-suppression agent during a re-enforcing fire-suppression time interval. 9. The system of claim 8, wherein the first altitude is about 11 km (36,000 feet) equivalent oxygen pressure altitude. 10. The system of claim 8, wherein the second altitude is about 7.6 km (25000 feet) equivalent oxygen pressure altitude. 11. The system of claim 8, wherein the predetermined cabin PL is equivalent to an atmospheric pressure at about 6.1 km (20,000 feet) equivalent oxygen pressure altitude. 12. The system of claim 8, wherein the initial fire-suppression time interval is about 5 minutes. 13. The system of claim 8, wherein the re-enforcing fire suppression time interval is about 23 minutes. 14. The system of claim 8, wherein the initial fire-suppression agent comprises at least one of the group consisting of: an active agent, and Halon. 15. The system of claim 14, wherein the active agent comprises at least one of the group consisting of: HFC-125, Pentafluoroethane (CF3CHF2), and Halon. 16. The system of claim 8, wherein the initial fire-suppression agent and the re-enforcing fire-suppression agent are supplied by a fire-suppression agent supply source coupled to a vehicle ducting. 17. The system to claim 16, wherein the fire-suppression agent supply source comprises at least one member selected from the group consisting of: a metered system, a descent storage bottle, and a dump bottle. 18. The system of claim 16, wherein the fire-suppression agent supply source comprises at least one member selected from the group consisting of: a storage bottle, an On-Board Inert Gas Generation System (OBIGGS), an HFC-125 supply source, a Pentafluoroethane (CF3CHF2) supply source, a Nitrogen supply source, an Argon supply source, a Helium supply source, an aerosolized liquid mist supply source, an FK 5-1-12 (C6F12O) supply source, a water supply source, and a Halon supply source.
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이 특허에 인용된 특허 (2)
Douglas S. Walkinshaw CA; Gintautas P. Mitalas CA; Campbell S. L. McNeil CA; Keith F. Preston CA, Environment control system for aircraft having interior condensation problem reduction, cabin air quality improvement, fire suppression and fire venting functions.
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