Combustion-product retardant barrier system for aiding passenger escape from aircraft fuselage structure

• US 4,121,790 A
• Filed: 06/22/1977
• Issued: 10/24/1978
• Est. Priority Date: 06/22/1977
• Status: Expired due to Term

• Current Assignee: Edward F. Graham
• Original Assignee: Edward F. Graham
• Inventors: Graham, Edward F.
• Primary Examiner(s): Barefoot, Galen L.
• Application Number:
  US05/808,740
• Time in Patent Office: 489 Days
• Field of Search: 244/1 R, 244/121, 244/118 R, 244/118 P, 244/129.2, 169/11, 169/48, 169/53, 52/2, 49/34, 49/31, 49/68, 98/36, 98/50, 105/376, 105/468, 160/6, 160/44, 61/45 F, 61/45 R
• US Class Current: 244/118.5
• CPC Class Codes: B64D 25/00 Emergency apparatus or devices, not otherwise provided for parachutes B64D17/00, B64D19/00; jettisoning of fuel tanks or fuel per se B64D37/00; specially adapted for protection against criminal attack, e.g. anti-hijacking systems B64D45/0015 ; safety belts or body harnesses in general A62B35/00; safety belts or body harnesses for land vehicles B60R22/00; jettisonable parts of fuselage facilitating emergency escape B64C

Abstract

A temporary barrier for retarding heat, fire and smoke within a fuselage while permitting unobstructed physical access and visual access to escape routes by passengers and crew, includes a light-weight inflatable curtain system with air jet curtain structure guarding otherwise unobstructed access therethrough; in embodiments the system includes partial and full curtains, curtains movable for maximum isolation of combustion areas, and special sealing provisions.

Claims

1. A combustion-product retardant barrier system for aiding passenger escape from aircraft fuselage structure, comprising:

a curtain assembly, means for storing the curtain assembly collapsed, means for deploying the curtain assembly across a passage in aircraft fuselage structure, and means for providing unobstructed passenger access but retarding passage of combustion products through said curtain assembly upon deployment.

2. A system as recited in claim 1, the curtain assembly including at least one panel, at least one tubular member for supporting said panel when deployed, the deploying means including:

a fluid pressure source, means for controlling the fluid pressure source, means for connecting the fluid pressure source for inflating the tubular member;

the means for providing comprising;

the curtain assembly defining an open doorway portion, and means for establishing an air curtain across said open doorway.

3. A system as recited in claim 2, said panel comprising at least one sheet of material having edge securance to said tubular member.

4. A system as recited in claim 3, said panel comprising plural, spaced sheets of material.

5. A system as recited in claim 4, the panel structure perforate for venting said space between the sheets of material.

6. A system as recited in claim 2, the means for controlling the pressure source including means for producing a first pressure in the tubular member and means for producing a second pressure greater than the first pressure in the means for establishing an air curtain.

7. A system as recited in claim 6, the means for establishing an air curtain including perforate tubing at the open doorway portion.

8. A system as recited in claim 7, the perforate tubing having a part thereof positionable by deployment of the curtain assembly for establishing an air curtain across structure other than said open doorway portion, whereby said air curtain can extend across a vent opening or the like in said an aircraft fuselage structure.

9. A system as recited in claim 2, the means for deploying including means for releasing fluid from the fluid pressure source through the means for connecting as result of one or more of the following:

aircraft impact actuation, heat actuation, smoke actuation, acoustical actuation, manual actuation.

10. A system as recited in claim 2, at least one inflatable brace on the curtain assembly and extensible therefrom by deployment of the curtain assembly.

11. A system as recited in claim 2, and flexible strip sheeting protruding from a margin of the tubular member for thereby sealing against a said aircraft fuselage structure.

12. A system as recited in claim 2, and means for moving said system along a said aircraft fuselage structure for improving location for combustion product retardation.

13. A system as recited in claim 12, the means for moving including longitudinal track, a carriage on said track, the carriage supporting said system, and means for locking the carriage to the track and for releasing the carriage for movement along the track.

14. A system as recited in claim 13, the tubular member having at least one reduced-section portion positioned for aiding bending when moved for easier passage of obstacles.

15. A system as recited in claim 13, plural of said carriages supporting plural respective said systems with respective said locking and releasing means.

16. A system as recited in claim 2, said curtain having shape for defining said an open doorway portion laterally contiguous with a portion of said an aircraft fuselage structure.

17. A system as recited in claim 2, said curtain having shape for defining a portion of a barrier in vertically contiguous relation with a portion of said an aircraft fuselage structure.

18. A system as recited in claim 2, the at least one panel being transparent.

19. A combustion-product retardant barrier system for aiding passenger escape from aircraft fuselage passage structure, comprising:

a collapsible curtain assembly, first fluid pressure means for deploying the collapsible curtain assembly across said aircraft fuselage passage structure, the curtain assembly having an access opening therein, second fluid pressure means, including collapsible perforate tubing for establishing an air curtain across said access opening.

20. The method of restraining movement of combustion products in aircraft fuselage passage structure while maintaining free access for movement of occupants along said passage, comprising the steps:

(a) deploying a collapsible curtain having an access opening therethrough across the aircraft fuselage passage structure, and

(b) establishing an air curtain across said access opening, thereby restraining movement of combustion products while maintaining free access for movement of occupants.