US3481565A - Aircraft arresting gear - Google Patents

Aircraft arresting gear Download PDF

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Publication number
US3481565A
US3481565A US681983A US3481565DA US3481565A US 3481565 A US3481565 A US 3481565A US 681983 A US681983 A US 681983A US 3481565D A US3481565D A US 3481565DA US 3481565 A US3481565 A US 3481565A
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US
United States
Prior art keywords
strap
magazine
speed
pulley
arresting gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US681983A
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English (en)
Inventor
Claude Louis Edouard Marcheron
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Transmission Systems SAS
Societe dExplotation des Materiels Hispano Suiza
Original Assignee
Hispano Suiza SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hispano Suiza SA filed Critical Hispano Suiza SA
Application granted granted Critical
Publication of US3481565A publication Critical patent/US3481565A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
    • B64F1/00—Ground or aircraft-carrier-deck installations
    • B64F1/02—Ground or aircraft-carrier-deck installations for arresting aircraft, e.g. nets or cables
    • B64F1/027—Ground or aircraft-carrier-deck installations for arresting aircraft, e.g. nets or cables using net or mesh

Definitions

  • the present invention relates to aircraft arresting gear comprising an artificial obstacle secured toat least one holding strap-that is to say a flexible bend having a thickness substantially smaller than its width-subjected to the action of a braking device.
  • the holding strap has characteristics of flexibility in the longitudinal direction and characteristics of rigidity in the transverse direction so that it can be folded in a systematic manner along practically all of its part situated upstream of the braking device, this folded part of the strap being called hereafter upstream part.
  • the upstream part rests by its lower edge on a plane support, which perrnits the progressive unfolding of this upstream part before it passes into the braking device.
  • the invention concerns more particularly, but not exclusively, aircraft arresting gears for arresting, at the end of the runway, aircraft in difliculty, such apparatus being called hereafter barrier arresting gear for aviation runways.
  • FIGURE 1 is a schematic view from above of an aircraft arresting gear arranged according to the invention
  • FIGURE 2 is a partial schematic view from above of a particular embodiment of the arresting gear represented in FIGURE 1;
  • FIGURE 3 is a schematic view in perspective illustrating a variation of the arresting gear represented in FIG- URE 2.
  • this barrier 1 can be formed in any appropriate manner, for example by using a cable or better still, as shown in FIG. 1, a net.
  • this barrier pulls at least one strap 2 subjected to the action of a braking device 3, mounted at a fixed post and preferably actuated hydraulically.
  • the strap 2 comprises a flexible band having a thickness substantially smaller than its width, and having in addition characteristics of flexibility in the longitudinal direction and characteristics of rigidity in the transverse direction.
  • two such straps are provided, these straps being secured respectively to the two ends of the arresting barrier 1, these two straps being symmetrically disposed about the axis of symmetry of the aviation runway P in question. (In FIGURE 1 only one of these two straps 2 has been shown, because this symmetrical arrangement renders it superfluous to show the other strap.)
  • This strap 2 can then be folded in a systematic manner at its upstream part and it then rests by its lower edge, on a plane support. Such a folded configuration permits I the progressive unfolding of the strap 2 before it passes stresses in the strap which would tend to render the upstream part of the strap unstable, such an instability risking premature unfolding.
  • An object of the present invention is to provide improved apparatus of this type which responds better than v in the past to the various considerations of practice, and another object of the invention is to take advantage of the property of straps mentioned hereabove in order to construct means for folding the upstream part of the strap.
  • the magazine was of parallelepiped shape and was disposed horizontally (approximatively at least), and its bottom constituted the plane support on which the lower edge of the upstream part rested.
  • the separation of the two lateral Walls of this mechanism corresponded to the Width of the upstream part, and the magazine was provided, at one of its ends, with a plate forming a stop.
  • the principal feature of the present invention is characterized by the fact that the means for folding the strap in such a magazine comprise a distributor carriage adapted to deliver the strap with a speed V, called distribution speed, in the direction of the stop plate and in the median longitudinal plane of the magazine (approximateinto the braking device 3,
  • a magazine 4 of parallelepiped shape is provided, this magazine being disposed horizontally (approximately at least).
  • the bottom 5 of the magazine forms the plane support on which the lower edge of the upstream part rests.
  • the spacing of the two lateral walls 6 and 7 of this magazine 4 correspond to the width of the upstream part.
  • the magazine 4 is provided, at one of its ends, with a stop plate 8.
  • the means for folding the strap 2 in the magazine 4 comprise a distributor carriage 9 adapted to deliver the band 2 with a distribution speed V in the direction of the stop plate 8 and in the longitudinal median plane M of the magazine 4 (approximately at least), the distributor carriage 9 being subjected to the action of a motor mechanism adapted to impose on it a recoil movement moving it away from said stop plate 8 with a recoil speed v lower than the distribution speed V.
  • the strap 2 will be folded in the magazine 4 in a configuration having the form of successive loo'ps bearing alternately on one and the other of the two lateral walls 6 and 7, and the separation of these successive loops will depend on the ratio k between the distribution speed V and the recoil speed v.
  • the strap 2 that is to be folded in the magazine 4 can be either unfolded along practically all its length, which is the case after each engagement of an aircraft in the barrier 1 (case shown in FIGURE 1), or disposed in a reserve, for example in the form of one or several rolls, this reserve being then carried by the distributor carriage for example (case not shown).
  • the distributor carriage 9 is advantageously provided with a roller distribution apparatus arranged so that, under the action of a motor of an appropriate type, this distributor apparatus delivers the strap 2 at a distribution speed V.
  • Such a distribution apparatus then comprises, a driving roller 10, driven by the motor of the apparatus, the axial dimension of this roller 10 being preferably at least equal to the height of the strap 2, and a pressure roller 11 advantageously disposed in the same transverse plane T as the driving roller 10, the strap 2 being nipped between these two rollers 10 and 11, the axial dimention of the pressure roller 11 being also preferably at least equal to the height of the strap 2.
  • This distribution apparatus is completed by a feeler roller 12, of the same axial dimension as the driving and pressure rollers 10 and 11, mounted at one of the ends of a pivotable bell crank lever 13 whose other end carries the pressure roller 11.
  • the form of this pivotable bell crank lever 13 is such that, on the one hand, the strap 2 is maintained in contact with the driving roller 10 on a sector of large angular extent (for example 90), and on the other hand, the pressure force exerted by the pressure roller 11 on the strap 2 is greater as the force necessary to bring back towards the distributor carriage 9 the unfolded fraction of the strap is greater, i.e. as the reaction of the unfolded fraction of the strap 2 on the feeler roller 12 is greater, thereby pivoting the bell crank lever 13 harder and urging the pressure roller 11 harder against the driving roller 10.
  • the motor mechanism for imposing on the distributor carriage 9 a recoil movement moving the carriage away from the stop plate 8 with a recoil speed v it can be formed in any appropriate manner on the condition that the recoil speed v is less than the distribution speed V, the ratio k between the distribution speed V and the recoil speed v being preferably constant it it is desired that the folding of the strap 2 in the magazine 4 is effected in a regular manner, that is to say according to a configuration in the form of successive loops whose separation is constant.
  • this motor mechanism can be carried by the distributor carriage 9 which is then provided with wheels 14 guided by rails 15, at least one of these wheels 14 being a driving Wheel.
  • a synchronization device connects this motor mechanism to the motor for driving the driving roller 10.
  • a single motor can be provided, carried by the distributor carriage 9 equipped with its wheels 14, this single motor assuring, by the intermediary of a motion transmission device, on the one hand, the driving of the driving roller 10 and on the other hand the recoil movement of the distributor carriage 9.
  • the motor mechanism assuring the recoil movement of the distributor carriage 9 comprises a distance transmission having an endless tie, and the motor mechanism is arranged to drive the driving roller 10 as well.
  • two pulleys of different diameters namely a first pulley 16 of diameter D and a second pulley 17 of diameter D smaller than the diameter D are angularly fixed to the shaft of the driving roller 10 (or to a shaft driving the driving roller 10).
  • the pulley 16 will-be called hereafter large pulley, and the pulley 17 will be called small pulley.
  • a distance transmission comprising principally an endless tie 18 (cable, chain, etc.) traveling under the action of driving means between two groups of pulleys 19 and 20 situated respectively at the two ends of the magazine 4.
  • the endless tie 18 co-operates Without sliding with the large pulley 16 and the small pulley 17, the strand of this endless tie traveling in the direction of the distribution speed V of the strap 2 cooperating with the large pulley 16, whereas the strand of this endless tie 18 traveling in the direction of the recoil speed v of the distribution carriage 9 co-operates with the small pulley 17.
  • the driving means actuating the endless tie 18 can be formed by an appropriate motor driving one or more pulleys of the two groups of pulleys 19 and/or 20.
  • a single idler pulley 23 can be freely mounted on the distributor carriage 9.
  • This idler pulley 23 is provided with three grooves, namely: two grooves co-operating with the strand of the endless tie 18 traveling in the direction of the distribution speed V, the diameter of each of these grooves being equal to the diameter D of the large pulley 16, and a groove co-operating with the strand of the endless tie 18 traveling in the direction of the recoil speed v, the diameter of this groove being equal to the diameter D of the small pulley 17.
  • the invention thus provides aircraft arresting gear for aviation runways in which the means for folding the part of the strap situated upstream of the braking device are very simple, of sure operation, and permit of rapidly folding this upstream part.
  • said strap having a thickness substantially smaller than its width, and having characteristics of flexibility in the longitudinal direction and characteristics of rigidity in the transverse direction whereby said strap can be folded in a systematic manner
  • a braking device for said strap which passes through said braking device, said braking device being stationary with respect to the ground,
  • a magazine in the form of an elongated box for housing the portion of said strap that is upstream-with respect to the direction of translation of said holding strap when said vehicle is being arrested by said obstacleof said braking device, said magazine having a substantially horizontal bottom on which said upstream portion of said strap can rest along its lower edge, and said magazine having two substantially parallel lateral walls and an end plate forming a stop;
  • folding means for folding said strap in said magazine comprising:
  • a distributor carriage adapted to deliver said strap with a particular distribution speed in the direction of said end plate and along a plane which is substantially the longitudinal median plane of said magazine
  • said distribution apparatus comprises a driving roller whose axial dimension is at least equal to the height of the strap, and a pressure roller disposed in the same transverse plane as the driving roller, the strap being nipped between said driving roller and said pressure roller, the axial dimension of said pressure roller being at least equal to the height of the strap.
  • said distribution apparatus comprises in addition a feeler roller, of the same axial dimension as said driving and pressure rollers, mounted at one of the ends of a pivotable bell crank lever whose other end carries said pressure roller, the form of said pivotable bell crank lever being such that, on the one hand said strap is maintained in contact with said driving roller on a sector of considerable angular extent, and on the other hand the pressure exerted by said pressure roller on said strap is greater as the force necessary to bring back said strap is greater.
  • said distributor carriage carries a single motor adapted, by the intermediary of a motion transmission device, on the one hand to drive said driving roller, and on the other hand to produce the recoil movement of the distributor carriage, said distributor carriage being provided with wheels guided by rails, at least one of said wheels being a driving wheel.
  • said driving roller is rigid in rotation with two pulleys, of different diameter, namely a first pulley and a second pulley whose diameter is less than that of said first pulley
  • said distance transmission comprising principally an endless tie traveling under the action of motor means between two groups of pulleys situated respectively at the ends of said magazine, said endless tie being adapted to cooperate without sliding With said first pulley and with said second pulley, the strand of said endless tie traveling in the direction of the distribution speed co-operating with said first pulley, Whereas the strand of said endless tie traveling in the direction of the recoil speed co-operates with said second pulley.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
US681983A 1966-11-17 1967-11-13 Aircraft arresting gear Expired - Lifetime US3481565A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR83956A FR1507313A (fr) 1966-11-17 1966-11-17 Perfectionnements apportés aux équipements d'arrêt à sangle de retenue

Publications (1)

Publication Number Publication Date
US3481565A true US3481565A (en) 1969-12-02

Family

ID=8621158

Family Applications (1)

Application Number Title Priority Date Filing Date
US681983A Expired - Lifetime US3481565A (en) 1966-11-17 1967-11-13 Aircraft arresting gear

Country Status (5)

Country Link
US (1) US3481565A (fr)
CH (1) CH469597A (fr)
FR (1) FR1507313A (fr)
GB (1) GB1189539A (fr)
SE (1) SE316087B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589652A (en) * 1969-07-08 1971-06-29 Gulf & Western Ind Prod Co Aircraft arresting device
US20090242693A1 (en) * 2008-03-31 2009-10-01 Urnes Sr James M System for shipboard launch and recovery of unmanned aerial vehicle (uav) aircraft and method therefor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3057587A (en) * 1959-02-12 1962-10-09 Hein Lehmann Ag Arresting gear with braking device for aircraft
US3092210A (en) * 1959-05-29 1963-06-04 Ronnerstrom Sven-Erik Brake for airplane-arresting devices
US3200906A (en) * 1962-10-09 1965-08-17 Bernard Jean-Paul Strand brake for aircraft arresting gear

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3057587A (en) * 1959-02-12 1962-10-09 Hein Lehmann Ag Arresting gear with braking device for aircraft
US3092210A (en) * 1959-05-29 1963-06-04 Ronnerstrom Sven-Erik Brake for airplane-arresting devices
US3200906A (en) * 1962-10-09 1965-08-17 Bernard Jean-Paul Strand brake for aircraft arresting gear

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589652A (en) * 1969-07-08 1971-06-29 Gulf & Western Ind Prod Co Aircraft arresting device
US20090242693A1 (en) * 2008-03-31 2009-10-01 Urnes Sr James M System for shipboard launch and recovery of unmanned aerial vehicle (uav) aircraft and method therefor
US8028952B2 (en) 2008-03-31 2011-10-04 The Boeing Company System for shipboard launch and recovery of unmanned aerial vehicle (UAV) aircraft and method therefor

Also Published As

Publication number Publication date
SE316087B (fr) 1969-10-13
CH469597A (fr) 1969-03-15
FR1507313A (fr) 1967-12-29
DE1531541A1 (de) 1969-12-18
GB1189539A (en) 1970-04-29

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