EP3746735B1 - Système de largage d'arme - Google Patents

Système de largage d'arme Download PDF

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Publication number
EP3746735B1
EP3746735B1 EP19702691.7A EP19702691A EP3746735B1 EP 3746735 B1 EP3746735 B1 EP 3746735B1 EP 19702691 A EP19702691 A EP 19702691A EP 3746735 B1 EP3746735 B1 EP 3746735B1
Authority
EP
European Patent Office
Prior art keywords
assembly
bomb
arming
lanyard
turbine
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.)
Active
Application number
EP19702691.7A
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German (de)
English (en)
Other versions
EP3746735A1 (fr
Inventor
Nicholas Charles CORNER
Anthony Edward MARSH
Robert David BAKER
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.)
Portsmouth Aviation Ltd
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Portsmouth Aviation Ltd
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Publication date
Application filed by Portsmouth Aviation Ltd filed Critical Portsmouth Aviation Ltd
Publication of EP3746735A1 publication Critical patent/EP3746735A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/28—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids
    • F42C15/295—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids operated by a turbine or a propeller; Mounting means therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C14/00—Mechanical fuzes characterised by the ammunition class or type
    • F42C14/06—Mechanical fuzes characterised by the ammunition class or type for fall bombs

Definitions

  • the present invention relates generally to weapon delivery systems, and in particular to aerial bomb arming arrangements.
  • Weapon delivery systems are known for the deployment of aerial bombs.
  • the system ensures that the bomb is only armed once it has left the aircraft.
  • the bomb undergoes an arming sequence.
  • This is known to include a wind/air arming device, which includes turbine blades/vanes which are arranged to rotate when exposed to the atmosphere, and thereby generate an electrical current (which in possible conjunction with one or more other signals) causes the bomb to be armed.
  • This may be termed a mechanical or electro-mechanical arming environment.
  • LEFA Lead Electrical Fuze Arming
  • the air-driven arming device With the bomb unarmed, the air-driven arming device is held in a stowed condition, not exposed to the surrounding atmosphere.
  • a lanyard at one end fixed to the airframe (or at least in the frame of reference) of the aircraft and the other to the device, applies a pulling force to bring the arming device into a deployed condition.
  • the lanyard fixation point is not always located at the optimal position relative to the position of the arming device so as to urge the arming device into a deployed condition.
  • a known bomb arming assembly is disclosed in US4882970 which is arranged to be located externally of the bomb.
  • an aerial bomb arming assembly which comprises an air driven turbine, which is arranged to rotate and generate an electrical current when exposed to atmosphere, and the turbine arranged for transition from a stowed condition to a deployed condition, and the assembly further comprising a lever arm which comprises a first end, a second end and an arm portion, and the first end is connected to the arm portion by way of a pivotable connection, and the first end is arranged for translational movement along a guide, and the second end of the arm portion arranged to provide a pulling force to the device when the first end translates on the guide, wherein the first end is arranged to be located within the internal space of the bomb, which internal space is defined within an outer casing.
  • Transition from the stowed condition to the deployed condition may comprise exposing the turbine to atmosphere.
  • the turbine may be arranged in a space which is provided with a cover or top, and the cover arranged to be removed or repositioned by way of the pulling force provided by the (lever) arm portion, so as to expose the arming turbine.
  • the pivotable connection between the first end and the arm portion preferably allows the arm portion to pivot relative to the first end.
  • the guide may comprise a rod, rail or shaft.
  • the guide may extend substantially parallel to the longitudinal axis of the bomb.
  • the second end of the arm may be arranged to protrude externally of the outer casing or housing of the bomb, at least when in a deployed or in-use condition.
  • the air driven turbine may comprise an alternator or a solenoid, arranged to generate an electrical current or pulse when rotation of the turbine occurs.
  • 'Aerial bomb' may also be described as an aerially deployed munition.
  • 'rod' we include any elongate member, which need not necessarily have a circular or round cross-section.
  • the arming assembly may comprise a lanyard, one end portion of which is arranged to be attached to a fixation point fast with an aircraft, and another end portion of the lanyard may be secured to the lever arm so as, in use, to pull the first end along the guide.
  • Said other end portion of the lanyard may be secured to the first end of the lever arm.
  • 'Lanyard' may include a cord, a wire or a cable.
  • the invention may include one or more features described in the description and/or shown in the drawings, either individually or in combination.
  • FIG 1 shows the innards of an aerial bomb 1, with particular emphasis on its (mechanical) arming environment.
  • the aerial bomb comprises explosive material, a fuze and an arming device. It will be appreciated that in the view shown, an outer casing of the bomb is omitted for reasons of clarity. (However, structural rings 50 are shown to provide an indication of the internal volume of that section of the bomb.)
  • the arming device 2 comprises a bladed/vaned turbine which is contained within a pivotably mounted housing 2 (as best seen in Figure 6 ).
  • the housing 2 is located, in an undeployed condition, in a void provided by the device 3 and which is covered by a removable cover 4.
  • the cover 4 comprises fixing points 5a and 5b provided on its outer surface, to which portions of a lanyard 10 are attached.
  • the cover 4 is arranged to be capable of being peeled away from the housing of the arming device 2, and pivot the turbine contained in the housing 2 outwardly so as to operationally expose the underlying turbine.
  • the (mechanical) arming environment further comprises a lever arm 12, which comprises a first end 13a and a second end 13b, and the first end and the second end are provided at distal/extreme ends of an arm portion 14.
  • a pivot 15 is provided to pivotably connect the arm portion 14 to the first end 13a.
  • the first end 13a comprises a substantially cylindrical part, open at both ends, which receives through its internal space a guide shaft 20.
  • a bearing 21 is provided on the inwardly facing region of the first end, which bearing contacts with the guide shaft 20.
  • the first end 13a is arranged to slide or translate along the guide shaft 20.
  • the guide shaft 20 is substantially parallel to a longitudinal axis of the bomb.
  • One end of the guide shaft 20 is supported in a transverse/cross beam member 16 by way of a shaft end support 23.
  • the lever arm 12 comprises a fixing point within the end portion 13a for an end portion of a lanyard 30, as best seen in Figure 4 .
  • a reinforced eye 30b is secured by a pin 22, which pin passes through two upright flanking formations 13c.
  • the lanyard 30 runs from the first end 13a through a through hole provided in the shaft end support 23 attached to cross-beam 16, and outwardly through an aperture 31.
  • An opposite distal end of the lanyard 30 comprises a reinforced eye 30a.
  • the eye 30a is arranged to be secured or connected (directly or indirectly) to a fixture which is fast with the aircraft, such as the superstructure or airframe of the aircraft, such as a hook.
  • the second end 13b of the lever arm 14 comprises a lanyard guide surface 18 (seen best in Figure 3 ).
  • This surface advantageously serves to correctly position and centralise the lanyard 10 so that a pulling force is applied at the correct orientation/position.
  • the lanyard 10 is secured to the arm portion 14 by way of the rigid loop 25 which is attached to component 61 of a carriage 60.
  • the carriage 60 can be manually set at a required position on the arm 14.
  • the carriage 60 comprises a thumb screw operated adjuster 62 to tighten the lanyard to the lever arm by fixing the carriage 60 in a particular position.
  • the lanyard can vary in length and the carriage 60 allows adjustment according to suit the length of lanyard used.
  • the lanyard 10 extends over the surface 18, and to the attachment points 5a and 5b on the cover 4.
  • the arming environment also comprises a solenoid safety device 90, as best shown in Figure 1A .
  • the device 90 allows a loop 30c of an extension 30b from the lanyard 30 to be held by a retractable pin 91. Operation of the solenoid causes the pin to retract into the solenoid housing. The arming mechanism will not operate until the lanyard extension 30b has been released by the solenoid.
  • the solenoid 90 must receive an electrical pulse signal from the aircraft to activate allowing the aerial bomb to be armed on release from the aircraft. If the aerial bomb needs to be jettisoned, without arming (inert), the electrical pulse will not be sent and the bomb will fall away without the arming mechanism operating.
  • the transverse beam 16 is provided with a LEFA connector 40, which is arranged to connect with a plug which supplies the LEFA signal at the time of the deployment of the bomb.
  • the LEFA signal is generated upon a command from the launch aircraft.
  • the fixation point (referenced F) for the eye 30a of the lanyard 30, is provided at a position which is out of registration/alignment from the position of the arming device 2 (referenced A).
  • the position of the aircraft's weapon retaining/releasing fixture shown generally at 70, where the fixation point is located is offset from the position of the arming device 2.
  • the arming assembly described here allows the required pulling force to be applied to the arming device 2, so as to deploy the same.
  • FIG. 5 shows two weapon retaining/releasing fixtures 70, and a weapon 100 which is releasably supported by one of the retaining/releasing fixtures. These are secured to a structural support member or beam 80. Each of the fixtures 70 releasably lock an aerial bomb in place until a signal is received to deploy (armed) or jettison (unarmed).
  • a LEFA pulse generator (not illustrated) sends a standard LEFA pulse to the signal conditioning unit on the bomb through electrical wire 46.
  • a signal from the alternator of the turbine also needs to be received. This is achieved by the reaction force (from the gravitational pull of the mass of the bomb) pulling a connection cable 45, connected to the fixture 70 and to the eye 30a, causing the lanyard 30 to pull the first end 13a of the lever arm along the guide shaft 20.
  • This upward force also causes the housing 2 to be pivoted out of its stowed position into a deployed condition.
  • This causes the turbine 2 to be exposed to the surrounding air, which drives the turbine to cause an electrical current signal to be generated.
  • the housing 2 in the deployed condition, and the lever arm extending outwardly is shown in Figure 5 .
  • the portion of lanyard extending from the end 13b of the lever arm to the cover is omitted.
  • arming device can be used, an in particular other types which require a turbine to be pivoted into atmosphere.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Outdoor Equipment (AREA)
  • Toys (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Claims (10)

  1. Ensemble d'armement de bombe aérienne, qui comporte un dispositif (2) d'armement entraîné par air, le dispositif d'armement entraîné par air comportant une turbine qui est agencée pour tourner et générer un courant électrique lorsqu'elle est exposée à l'atmosphère, la turbine étant agencée pour passer d'un état escamoté à un état déployé, et l'ensemble comportant en outre un bras (12) de levier qui comporte une première extrémité (13a), une seconde extrémité (13b) et une partie (14) de bras, et la première extrémité étant liée à la partie de bras par l'intermédiaire d'une liaison pivotante, et la première extrémité étant agencée en vue d'un mouvement de translation le long d'un guide (20), et la seconde extrémité de la partie de bras étant agencée pour appliquer une force de traction au dispositif lorsque la première extrémité translate sur le guide, la première extrémité étant agencée pour être située à l'intérieur de l'espace interne de la bombe, ledit espace interne étant défini à l'intérieur d'une enveloppe extérieure.
  2. Ensemble selon la revendication 1, le passage de l'état escamoté à l'état déployé comportant le fait d'exposer la turbine (2) à l'atmosphère.
  3. Ensemble selon la revendication 1 ou la revendication 2, la turbine (2) étant agencée dans un espace qui est muni d'un couvercle ou chapeau (4), le couvercle étant agencé pour être retiré ou repositionné par l'intermédiaire de la force de traction fournie par le bras (12) de levier, de façon à exposer la turbine d'armement.
  4. Ensemble selon l'une quelconque des revendications précédentes, la liaison pivotante entre la première extrémité (13a) et le guide (20) permettant audit guide de pivoter par rapport à la première extrémité.
  5. Ensemble selon l'une quelconque des revendications précédentes, la seconde extrémité (13b) de la partie (14) de bras étant agencée pour faire saillie à l'extérieur de l'enveloppe extérieure ou du corps de la bombe.
  6. Ensemble selon l'une quelconque des revendications précédentes, comportant un cordon (30) dont une extrémité est agencée pour être rattachée à un point de fixation solidaire d'un aéronef, une autre extrémité du cordon étant accrochée au bras (12) de levier de manière, en cours d'utilisation, à tirer la première extrémité (13a) le long du guide (20).
  7. Ensemble selon la revendication 6, l'autre extrémité du cordon (30) étant accrochée à la première extrémité (13a).
  8. Ensemble selon l'une quelconque des revendications précédentes, comprenant un dispositif (70) de verrou qui est agencé pour empêcher le bras (12) de levier d'être tiré d'un état escamoté à un état déployé, à moins et jusqu'à ce qu'un signal soit reçu par le dispositif de verrou qui est indicatif d'une commande visant à déployer la bombe aérienne dans un état armé.
  9. Ensemble selon l'une quelconque des revendications précédentes, le dispositif (70) de verrou comportant un dispositif électromécanique, qui peut comporter un dispositif à solénoïde.
  10. Ensemble selon la revendication 8 ou la revendication 9, le dispositif (70) de verrou comportant un élément entraîné qui peut être entraîné d'une position verrouillée à une position libérée, l'élément entraîné étant agencé pour retenir et libérer un sous-ensemble, tel qu'un ensemble (30) de cordon, qui est relié au bras (12) de levier et agencé pour tirer le bras de levier le long du guide (20) jusqu'à un état déployé.
EP19702691.7A 2018-02-02 2019-01-24 Système de largage d'arme Active EP3746735B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1801743.4A GB2577028A (en) 2018-02-02 2018-02-02 Weapon delivery system
PCT/GB2019/050207 WO2019150080A1 (fr) 2018-02-02 2019-01-24 Système de largage d'arme

Publications (2)

Publication Number Publication Date
EP3746735A1 EP3746735A1 (fr) 2020-12-09
EP3746735B1 true EP3746735B1 (fr) 2021-12-22

Family

ID=61730816

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19702691.7A Active EP3746735B1 (fr) 2018-02-02 2019-01-24 Système de largage d'arme

Country Status (4)

Country Link
EP (1) EP3746735B1 (fr)
GB (1) GB2577028A (fr)
SA (1) SA520412555B1 (fr)
WO (1) WO2019150080A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757695A (en) * 1969-12-19 1973-09-11 Us Army Charging system for electric bomb fuzes (u)
US4031827A (en) * 1976-03-04 1977-06-28 The United States Of America As Represented By The Secretary Of The Air Force Pop-up cover for slipstream generator
US4656943A (en) * 1984-12-07 1987-04-14 Motorola, Inc. Low profile, pivoted generator
US4858530A (en) * 1988-05-02 1989-08-22 Motorola, Inc. Power relay/safing device for a fuze system
US4882970A (en) * 1989-01-04 1989-11-28 The United States Of America As Represented By The Secretary Of The Navy Motion translator
GB2455490A (en) * 2007-09-27 2009-06-17 Portsmouth Aviat Ltd Military aircraft bomb arming system

Also Published As

Publication number Publication date
GB2577028A (en) 2020-03-18
SA520412555B1 (ar) 2022-11-16
GB201801743D0 (en) 2018-03-21
EP3746735A1 (fr) 2020-12-09
WO2019150080A1 (fr) 2019-08-08

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