Foreign object debris barrier for runways

Abstract

A collapsible runway side barrier for preventing foreign object debris (FOD) from entering a runway and taxiway. The barrier may have an aerodynamic profile, one side of the barrier profile may be convex and the other side of the barrier profile may be concave. The side barrier may further have ground attachment elements and may be constructed to collapse if the landing wheels of an aircraft impact the barrier.

Claims

1. A method for preventing foreign object debris (FOD) from entering a runway of an airport, comprising: providing a barrier comprising a sheet constructed to crush under pressure of an aircraft landing wheel; installing the barrier, including attaching the barrier to the ground, along a side of the runway, such that the sheet gradually ascends from a low point closest to an airplane route on the runway to an upper point of the barrier, in a manner which prevents foreign object debris from entering the runway and allows blowing FOD out of the runway over the barrier; and allowing airplanes to take off and land while the barrier is installed along the side of the runway.

2. The method of claim 1, wherein providing the barrier comprises providing a barrier having a concave outer side and a convex outer side, and wherein installing the barrier comprises installing such that the convex outer side of the barrier faces the runway.

3. The method of claim 1, further comprising installing a second barrier on a second side of the runway, wherein the second barrier has a concave outer side and a convex outer side, and is constructed to crush under pressure of an aircraft landing wheel, and wherein allowing airplanes to take off and land comprises allowing the airplanes to take off and land with barriers on both sides of the runway.

4. The method of claim 1, wherein providing the barrier comprises providing a plurality of barrier portions having a hollow extremity configured to receive an opposite extremity of another of the barrier portions, and wherein installing the barrier comprises connecting the barrier portions to each other and attaching them to the ground.

5. The method of claim 1, wherein providing the barrier comprises providing a barrier constructed to crush under pressure of an aircraft landing wheel, in a manner damaging a portion of the barrier and requiring replacement of the portion, while allowing the aircraft to safely proceed.

6. The method of claim 1, wherein providing the barrier comprises providing a metal barrier.

7. The method of claim 1, wherein providing the barrier comprises providing a barrier made of recycled rubber.

8. The method of claim 1, wherein installing the barrier comprises installing a barrier including an actuator for varying a height of the barrier, and adjusting the height of the barrier using the actuator.

9. The method of claim 8, further comprising controlling the height of the barrier remotely from a control tower of the airport.

10. The method of claim 1, wherein providing the barrier comprises providing the barrier in a folded form and wherein installing the barrier comprises unfolding the barrier.

11. The method of claim 1, wherein providing the barrier comprises providing a barrier made of a rigid material.

12. The method of claim 11, wherein the rigid material is selected from the group consisting of metal and recycled rubber.

13. The method of claim 1, wherein providing the barrier comprises providing a barrier made of a perforated metal.

14. The method of claim 1, wherein providing the barrier comprises providing a barrier made of aluminium.

15. The method of claim 1, wherein providing the barrier comprises providing a barrier made of steel.

16. The method of claim 1, wherein the barrier profile comprises at least one opening defined by a concave side of the barrier adapted to retain said foreign object debris.

17. The method of claim 1, wherein installing the barrier comprises installing the barrier in a manner such that the barrier serves as a protective housing for an electric cable providing power to landing lights in the runway.

18. The method of claim 1, wherein providing the barrier comprises providing a barrier having an aerodynamic profile.

19. The method of claim 1, wherein providing the barrier comprises providing a barrier made of an elastomer.

20. The method of claim 1, wherein providing the barrier comprises providing a barrier made of plastic.

21. The method of claim 1, wherein allowing airplanes to take off and land comprises allowing jet aircraft with jet engines to take off and land while the barrier is installed along the side of the runway.

22. The method of claim 1, wherein installing the barrier comprises installing a barrier provided with landing lights disposed on the barrier.

23. The method of claim 1, wherein installing the barrier comprises installing the barrier in close proximity to the runway.

24. The method of claim 1, wherein installing the barrier comprises installing the barrier with a maximal height of about 350 millimeters.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention will now be described further with reference to the accompanying drawings, which represent by example preferred embodiments of the invention. Structural details are shown only as far as necessary for a fundamental understanding thereof. The described examples, together with the drawings, will make apparent to those skilled in the art how further forms of the invention may be realized.

(2) In the drawings:

(3) FIG. 1 is a plan view of runways in a present-day airport.

(4) FIG. 2 is a further plan view the same airport, showing FOD encroaching on a runway of said airport;

(5) FIG. 3 is a perspective view of the runways seen in FIG. 1;

(6) FIG. 4 is a perspective view of the runways seen in FIG. 2;

(7) FIG. 5 is a perspective view of a sheet metal embodiment, or any other material;

(8) FIG. 6 is a perspective view of an embodiment made from an aluminium extrusion;

(9) FIG. 7 is a perspective view of a further sheet metal embodiment;

(10) FIG. 8 is a perspective view of a further similar embodiment provided with struts;

(11) FIG. 9 is a perspective view of a further similar embodiment provided with struts which are configured to collapse:

(12) FIG. 10 is a perspective view of a barrier supporting landing lights;

(13) FIG. 11 is a perspective view of an embodiment allowing drainage;

(14) FIG. 12 is a perspective view of an adjustable embodiment seen in a low position:

(15) FIG. 13 is a perspective view of the same adjustable embodiment seen in a high position:

(16) FIG. 14 is a view of a foldable embodiment and

(17) FIG. 15 is a view of an embodiment comprising discrete joinable lengths.

DETAILED DESCRIPTION OF THE INVENTION

(18) There are seen in FIGS. 1 and 3 several runways 10, 14 typical of those found in a present-day airport. FOD 18 is seen accumulating near the runways 10, 14. These runways are interconnected by parking/taxing areas 12, 16 used by aircraft 22 waiting for permission to take off.

(19) The runways are clean, no FOD is encroaching on a runway of said airport; In FIGS. 2 and 4 the same runways are seen, with FOD encroaching on parking areas 12, 16 and runways.

(20) A preferred embodiment of the FOD barrier, to be installed on both sides of the runways according to the invention is seen in FIG. 5 and is made of sheet metal or any other suitable material. The barrier 34 is provided with two rows 36 38 of ground attachment items. If crushed by an aircraft 22 landing wheel, the damaged portion of the barrier 34 is discarded and replaced. Preferably the shape being aerodynamic profile-one side of the barrier the FOD collection side concave to enable stopping FOD from entering the runway and the other side of the barrier, having a convex shape.

(21) The barrier embodiment 40 seen in FIG. 6 can be produced as an aluminium extrusion or rubber of about 350 mm is sufficient. As such, the present embodiment 40 can be produced at low cost but will need replacement if crushed by the landing wheel of an aircraft.

(22) FIGS. 7, 8 and 9 illustrate further embodiments 42, 44 and 46.

(23) The embodiment 42 seen in FIG. 7 is a simple low-cost barrier which collapses easily and is thus suitable for a runway serving light aircrafts.

(24) The embodiment 44 seen in FIG. 8 is provided with support pillars 45. The pillars 45 are driven into the soil if compressed by the passage thereover of a landing wheel. Thus there is a possibility of reusing the damaged section by repositioning the edge 48 upwards.

(25) In contradistinction thereto the supports 50 provided in the embodiment 46 seen in FIG. 9 are intended to break when compressed and are replaced thereafter.

(26) Referring now to FIG. 10, there is depicted a barrier 52 further provided with support means for a row of spaced-apart landing lights 54 disposed along the length thereof. The sheet metal profile provides a convenient protective housing for the electric cable 56 providing power to the lights 54.

(27) In FIG. 11 there is seen a FOD barrier 58 further provided with drainage channels 60 disposed between ground attachment means 62. This drainage is useful in preventing standing water on the runway resulting from rain, washing of aircraft or the operation of fire extinguishers.

(28) The barrier 58 seen is made of perforated metal 64 to allow drainage and to facilitate collapse when compressed by a landing wheel. Alternatively, other permeable materials may be used, such as recycled rubber.

(29) Turning now to FIGS. 12 and 13, there is seen a barrier 66 wherein hinged struts 68 are provided and are pivoted at 70 proximate to the upper edge 72 of the barrier 66. A fixed actuator 74 is held substantially at ground level. An telescopic arm 76 forms part of the strut 68 near the fixed actuator 74. The actuator 74 can shorten the strut 68 as in FIG. 12 for lowering the barrier 66, or lengthen the strut 68 as in FIG. 13 to raise the barrier 66.

(30) Where it is foreseen that the profile height is to be set once only, the appropriate actuator 74 is a screw and nut arrangement which is hand set on installation to bring the barrier 66 to a chosen height.

(31) However where it is intended to regularly change the height of the barrier 66 the actuator 74 comprises a screw and nut mechanism operated by a reversible direction electric motor. A central control station to operate the height adjustment mechanisms can be located in the control tower.

(32) The actuator 74 may comprise a fluid power cylinder. The actuators 74 can be remotely operated from the control tower.

(33) Height adjustability is advantageous where a lower position as in FIG. 12 is needed for small aircraft, while a higher barrier as seen in FIG. 13 is suitable for large aircraft.

(34) FIG. 14 refers to a first method of installing an elastomer runway side barrier 78 against FOD. Spaced-apart fold relief recesses 80 are provided therealong, allowing the barrier 78 to be folded and stored, and then transported from the manufacturer or vendor to an airport in the compact folded form seen in the figure.

(35) With regard to FIG. 15 there is illustrated a barrier 82 which is used in combination with a second improved method of installation.

(36) The invention provides a method of installing a runway side barrier 82. The barrier is manufactured in discrete lengths 88 for convenient storage and transport. One extremity 84 of each length is formed in a hollow configuration to engage the unformed extremity 86 of an adjacent length when deployed at the side of a runway.

(37) Due to its construction and profile the removing of FOD which accumulated therealong is performed by ordinary cleaning tools know in the art.

(38) The scope of the described invention is intended to include all embodiments coming within the meaning of the following claims. The foregoing examples illustrate useful forms of the invention, but are not to be considered as limiting its scope, as those skilled in the art will be aware that additional variants and modifications of the invention can readily be formulated without departing from the meaning of the following claims.