How are bombs attached to airplanes?

DE3001203C2 - - Google Patents


Publication number
DE3001203C2DE19803001203DE3001203ADE3001203C2DE 3001203 C2DE3001203 C2DE 3001203C2DE 19803001203 DE19803001203 DE 19803001203DE 3001203 ADE3001203 ADE 3001203ADE 3001203 C2DE3001203 C2DE 3001203C
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DE3001203A1 (de
William R. Carter
Larry G. Jamestown N.D. Us Ellis
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Western Gear Machinery Co
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Western Gear Corp.
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Priority to US06 / 005,476priorityCriticalpatent / US4266462A / en
Application filed by Western Gear CorpfiledCriticalWestern Gear Corp
Publication of DE3001203A1publicationCriticalpatent / DE3001203A1 / de
Application granted granted Critical
Publication of DE3001203C2publicationCriticalpatent / DE3001203C2 / de


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    • B64D1 / 00 — Dropping, ejecting, releasing, or receiving articles, liquids, or the like, in flight
    • B64D1 / 02 — Dropping, ejecting, or releasing articles
    • B64D1 / 04 — Dropping, ejecting, or releasing articles the articles being explosive, e.g. bombs
    • B64D1 / 06 — Bomb releasing; Bombs doors


The invention relates to a bomb dropping device with a bomb holding device and a dropping either an armed or a non-armed bomb (duds) causing, accordingly adjustable release device for the releasably attached to the aircraft and connected to the arming devices of the bomb arming wire according to the preamble of the claim.
With such a bomb-dropping device it must be ensured that under no circumstances can an armed bomb be dropped by mistake if an unarmed bomb is to be dropped, which is the case, for example, when a bomber plane wants to drop all bombs over neutral or over its own country, for example to prepare for an emergency landing or for technical reasons, such as damage to the aircraft, in particular failure of one or more engines.
For this reason, known bomb-dropping devices are designed in such a way that the release device for the purpose of dropping an armed bomb must be actuated separately from this in addition to actuating the dropping device, so that the bombardier must consciously undertake a separate action if he wants to drop a live bomb. This eliminates an error of the kind described as far as possible.
In known bomb-launching devices, a triggering pin that connects the arming wire to the aircraft, is axially displaceable, passed through a loop of the arming wire and can be pulled out of this loop, is provided for this purpose, which moves through the action of an electrical coil by means of a spring-loaded part either released or left immobile. Only if the trigger pin remains in the loop of the arming wire, the latter is pulled out of the Scharfmachvor directions of the bomb and armed it as a result; on the other hand, if the trigger pin has been pulled out of this loop, then the bomb is dropped together with its arming wire, the arming devices of the bomb are not activated, and the bomb is dropped as a dud.
In one known from US-PS 32 00 707 bomb dropping device, the trigger pin protrudes with a conical tip into a slot and is pressed by a pressure spring with its tip against the opposite slot wall. In this position, the release pin can be locked by a locking pin, in which this release pin is pushed against the force of a spring acting on it by an electric coil into an annular groove of the release pin. The arming wire is not held here by a simple loop, but by a ring attached to it, into which the tip of the release pin protrudes. If the locking pin is not moved into the ring groove of the release pin by switching on the electrical coil, then when a certain tensile force is exerted on the arming wire as a result of the conical tip of the release pin, it can be pushed back against the force of the spring acting on it. This also happens when the ring on the arming wire is to be hooked into the release pin, in which the ring is simply pushed into the slot and the release pin is pushed back a little. But if the release pin is held in its position by moving the locking pin into the ring groove of the release pin, then even by exerting the greatest amount of force, the release pin cannot be pushed back by the ring on the arming wire, so it remains held, and the arming wire causes a Arm the bomb. The safe functioning of this device depends on a fairly precise production of the individual parts, in particular the compliance with fairly close production tolerances in the diameters of the displaceable parts and the holes receiving them. Also, when dirt or foreign particles enter the slot into which the tip of the release pin protrudes, the coefficient of friction of the surface of the conical surface on the release pin increases so that the ring attached to it is unable to do so when the arming wire is pulled to push back the release pin not locked by the locking pin, so that an armed bomb is then thrown from, although this is not wanted and is not intentionally caused by switching on the electric coil.
In contrast, the object of the invention is a simpler production of the various parts of the device with ge lower tolerances and a safe, even if impurities or other external influences not be impaired working of the bomb-dropping device.
This object is achieved with the features listed in the characterizing part of the patent claim.
In the marked construction according to the invention, neither the trigger pin and its receiving bore nor the part moved by the solenoid, through whose movement in one position or the other causes the dropping of an armed or a non-armed bomb, are manufactured precisely and with narrow tolerances especially since the latter part is a very simple stop. In addition, the trigger pin is here inevitably, namely positively, pulled out of the loop of the arming wire, which is in no way dependent on any friction conditions, and as a result, this device works practically independently of any external influences completely reliable. Should the trigger pin nevertheless get stuck and cannot be pulled out of the loop of the arming wire as a result, then the lever articulated to the trigger pin cannot be moved as a result of its connection to the aircraft-mounted linkage of the throwing device, and as a result, the entire can The linkage of the ejection device is not actuated, i.e. no bomb at all is thrown. Thus, the unintentional dropping of an armed bomb is completely excluded.
An exemplary embodiment of the invention is shown in the drawing. Show it:
Fig. 1 schematically shows a bomb with carrying device, arming wire and bomb dropping device according to the invention;
Fig. Fig. 2 is a side view of a bomb dropping device;
Fig. 3 is a side view of an opposite Fig. 2 from a slightly modified embodiment.
Fig. 1 shows an elongated bomb 10, the detachable from a corresponding, elongated Haltebügel Konstruk tion 12 is worn, which is attached in the usual way in the bomb bay of an aircraft. A pair of spaced apart support elements, such as eye bolts 14, is at the top of the bomb 10 attached. The bracket construction 12 is of well known construction and includes a pair of laterally spaced side panels 16 (Of which only one is shown), between which (not shown) cross struts run, so that a rigid, hollow structure is formed ge. The side panels 16 have downwardly open openings 18 which have the same longitudinal distance from each other as the eye bolts 14.
A known type of bomb-dropping mechanism used in 19 is indicated schematically, is located between the side panels 16 next to the openings 18 and form a detachable mount for the bomb 10. When the bomb is to be dropped, a bomb-dropping linkage of known type is actuated in such a way that the adjacent elements of the mechanisms 19 be withdrawn and thus the connection with the eye bolts 14 is resolved. When the plane is in the air, the bombs will be released 10 temporarily armed; however, it is any bomb 10 additionally with an end arming mechanism 20 and possibly a secondary arming mechanism 22 Mistake. In Fig. 1 is as an end arming mechanism 20 schematically a arming propeller 24 shown, by means of a shaft 26 near the front end of the bomb 10 is rotatably mounted. The mechanism 20 works so that the bomb 10 is finally armed after it has been disengaged and the propeller 24 has twisted a certain number of revolutions. The secondary arming mechanism 22 generally works barometric or timed, so the bomb 10 after it has been released, it is additionally armed at a predetermined height or after a predetermined time has elapsed after being released from the aircraft.
The two mechanisms 20 and 22 are made effective by a release device 30 according to the invention. The setting of the release device 30 determines if the bomb 10 fully armed or thrown off as a dud. The release device 30 stands with the mechanisms 20 and 22 over a arming wire 32 in connection. That arming wire 32 consists simply of a piece of copper wire or the like, which is twisted at its center in such a way that it forms a loop 34 forms that are detachable from the release device 30 is held. One end of the arming wire 32 stands with the end arming mechanism 20 related to twisting of the propeller 24 and the other end is to the secondary arming mechanism 22 connected to make this ineffective.
The side panels 16 exhibit in addition to the openings 18 openings open at the bottom 36 on, the lengthways between the openings 18 lie. The release device 30 is between the side panels 16 next to the openings 32 supported and embraced, as in Fig. 2 shown, the following parts: A vertically arranged filler rib 36horizontally between a spaced pair of flanges 38 and 39 runs; a horizontal release pin 40, both ends of which in mitein other coaxial bores 42 are slidably mounted horizontally through the flanges 38 and 39 run through; an approximately vertical lever 44that is articulated with the trigger pin near its lower end 40 connected is; and one optionally by an electrical coil 45 stop to be actuated 45that in a manner described below with the lever 44 men works together in such a way that the arming wire 32 from the release device 30 detained or released. When a bomb 10 is thrown off and the arming wire 32 through the release device 30 is arrested, then the arming mechanisms 20 and 22 made effective by connecting them to the respective ends of the arming wire 32 be pulled free, and the bomb 10 is fully armed. If on the other hand the arming wire 32 from the release device 30 is released, the arming wire falls 32 along with the bomb 10 down, and the arming mechanisms 20 and 22 remain ineffective. As a result, in the latter case, the bomb will be dropped as a dud.
The trigger pin 40 has a transverse bore between its axial ends. The lever 44 has a cross hole 46 near its lower end. The hole 46 is aligned in the axial direction with the hole in the release pin 40, and a pivot pin is located in the two aligned holes 48, which is held firmly in any way, for example by means of locking pins attached near its axial ends. The lever 44 can be U-shaped so that the pivot pin 48 from the lever 44 on both sides of the rib 36 is held.
To the trigger pin 40 around is a compression spring 50 see provided between the trunnion 48 and a spring seat 52 next to the flange 39; as in Fig. 2 is shown, the flange lies 39 in the axial direction at a distance to the left of the flange 39. As a result, the compression spring presses 50 usually the trigger pin 40 towards the right flange 38 in its bore 42 into it.
The one in the line of sight Fig. 2 lower right corner section of the filler rib 36 has an upward bleed 52 on that is off the trigger pin 40 extends upwards. The bleed 52 allows the loop to be taken up 34 within the release device 30 and their support by the release pin 40going through this loop 34 through into the adjacent hole 42 runs. The filler rib 36 and the left flange 39 form a continuous, overall oval-shaped opening 54 in the vicinity of the spring 50to move the release pin in the manner still to be described below 40 to enable.
The one through the electric coil 45 stop to be actuated 56 is from the filler rib 36 above the gate 52, to the right of the lever 44, carried. The attack 56 is perpendicular to the plane of the filler rib 36 movable back and forth. This optional back and forth movement takes place in accordance with the activation or deactivation of the electrical coil 45. The attack 56 is normally urged outward by an unillustrated spring when the electric coil 45 is not turned on. When the electric coil 45 on the other hand is switched on, then it overcomes the attack 56 exerted pretensioning force and causes an upward movement of the stop 56. The arrangement is so out forms that when the lever 44 around the trunnion 48 is pivoted clockwise, the stop 56 such pivoting movement interrupts when the electric coil 45 is turned off, and when it is turned on, then the stop 56 withdrawn, and the lever 44 can move around the trunnion as a result 48 freely pivot around.
The lever 44 is with the operating linkage of the bomb-dropping mechanisms 19 over openings 58 near the top of the lever 44 connected. When operating the linkage to the bomb-dropping mechanisms 19 there is a pull on the lever 49 in the area of ​​the openings 58. This train causes the lever to pivot 44 around the trunnion 48 clockwise. However, if a bomb that is not armed, i.e. a dud, is dropped, the electric coil remains 45 switched off. The attack 56 ver therefore remains in its normal outer position caused by the pretensioning force and lies in the movement path of the lever 44. When the lever 44 to the stop 56 is pivoted towards, the leading side of the lever hits 44 on the stop 56 on. The pull on the lever 44 continues; however, the stop works 56 now for the lever 44 as a pivot point, and instead of continuing the pivoting movement of the lever 44 around the trunnion 48 now overcomes the lower end of the lever 44 the power of the spring 50 and be a displacement of the trigger pin 40 to the left, taking it out of the hole 42 in the flange 38 is pulled out. If the release pin is shifted further to the left 40 gives this the loop 34 of the arming wire 32 free. The arming wire 32 then falls together with the bomb 10 down, taking the bomb 10 is not armed.
If, on the other hand, a fully armed bomb 10 should be thrown from, then brings the release device 30 a considerable advantage in terms of security technology over the previously known release devices, in that it is better ensured that armed bombs are not dropped when it is actually intended to drop a bomb that has not been armed, i.e. a dud. The linkage to the bomb dropping mechanisms 19 is actuated and leads to the train described above on the lever 44around the trunnion 48 to pan around. During the work sequence of dropping an armed bomb, it must hit the ground 56 associated electrical coil 45 switched on. This leads to the stop being pulled out 56 inside. As a result, the lever pivots 44 further around the trunnion 48 around and does not move the trigger pin 40 and therefore no release of the loop 34 of the arming wire 32. The arming wire 32 Rather, it will continue to be released from the device 30 and its ends are held by the arming mechanisms 20 and 22 pulled away when the bomb 10 falls.
Fig. 3 shows an optional embodiment of a release device 30'According to the invention, which is completely identical to the device with respect to the way it works 30 to Fig. 2 as described above. The main difference between the devices 30' and 30 is that in the device 30′ The lever on the release pin 40'Near its axial end that of the gate 52 is farthest away. In the general shape of the device 30'Are suitable changes compared to the device described above 30 made with regard to the different position of the lever 44′. For reference are the elements of the device 30', Which are similar in their mode of action to the elements of the device 30 are given the same reference number, but with a prime. Both devices 30 and 30'Are plates in their operating position between the sides 16 the bracket construction 12 held, for example, by fasteners that plates between the sides 16 run and through blind tapped holes 60 in fixtures 30 and 30′.
Modifications to the described and illustrated embodiments of the invention are possible, for example, the trigger pin 40 be provided with cylindrical steps to limit stops for its movement as well as a one-piece seat for the spring 50 to accomplish. Biasing elements other than the spring can be used 50 be provided, and the lever 58 can by a different linkage than that directly with the bomb dropping mechanisms 19 connected linkage, be pivotable.

Claims (1)

  1. Bomb dropping device with a bomb holding device and the dropping of either an armed or a non-armed bomb (duds) cause the correspondingly adjustable release device for the arming wire which is releasably attached to the aircraft and connected to the arming devices of the bomb, the release device for the purpose of dropping an armed one Bomb in addition to operating the dropping device must be operated separately from this, with a connecting the arming wire to the aircraft, axially displaceable, passed through a loop of the arming wire and pulled out of this loop trigger pin, which is through the action of an electrical coil by means of a The movement of the part under spring tension can either be released or left unmoved, characterized, that a linkage of the launching device that is fixed at one end to the aircraft and at its other end articulated to the release pin (40) via a trunnion (48) connected lever (44) and between its ends a stop (56) is provided, the latter under the action of the spring and the counteracting electrical coil (45) either into or out of the path of movement of the pivot pin (48) pivoted lever (44) is movable in such a way that it (56) with the electrical coil switched off (45) is moved into this path of movement by spring force and when the lever (44) then forms the lever pivot point, after which the lever (44) the trigger pin (40) against the action of a spring (50) shifted and out of the loop (34) of the arming wire (32) pulls out, while when the electric coil is switched on it only extends around the pivot pin (48), without shifting the in the loop (34) remaining release pin (40), pivoted.
DE198030012031979-01-221980-01-15ExpiredDE3001203C2 (de)

Priority Applications (1)

Application NumberPriority DateFiling dateTitle
US06 / 005,476US4266462A (en) 1979-01-221979-01-22Airborne stores arming trigger unit

Publications (2)

ID = 21716071

Family Applications (1)

Application NumberTitlePriority DateFiling date
DE19803001203ExpiredDE3001203C2 (de) 1979-01-221980-01-15

Country Status (4)

Families Citing this family (12)

Publication numberPriority datePublication dateAssigneeTitle
WO1982003272A1 (en) *1981-03-131982-09-30Robinson Paul RodneyA loop retention device for hook operated bomb arming solenoids
FR2507304B1 (de) *1981-06-031984-12-07Lacroix E Tous Artifices
US4467695A (en) *1983-04-291984-08-28The United States Of America As Represented By The Secretary Of The NavySafe jet device for aircraft stores
US4528890A (en) *1983-09-011985-07-16Western Gear CorporationAirborne stores arming trigger unit
FR2563490B1 (fr) *1984-04-271986-12-05Alkane R & CieDispositif de retenue et de largage d'un fil assurant l'armement de fusees de bombes
US4682530A (en) *1986-05-301987-07-28Western Gear CorporationAirborne stores arming trigger unit and method of preventing undesired arming
FR2602585B1 (fr) *1986-08-081990-07-27Alkane R & CieDispositif de retenue ou de largage d'un fil d'armement de fusees de projectiles
DE3833817C2 (de) *1988-10-051991-06-27Messerschmitt-Boelkow-Blohm GmbH, 8012 Ottobrunn, De
DE3834556C2 (de) *1988-10-111991-03-28Diehl GmbH & Co, 8500 Nuernberg, De
US5305676A (en) *1993-03-081994-04-26Bw / Ip International, Inc.Low retention force release and arming mechanism for ordinance devices
US6584880B1 (en) *2001-01-302003-07-01Raytheon CompanyElectronically controlled arming unit
GB2586661A (en) *2019-08-302021-03-03Edo Mbm Tech LimitedShear wire adapter kit

Family Cites Families (5)

Publication numberPriority datePublication dateAssigneeTitle
US2992594A (en) *1957-01-161961-07-18Jervis Corp.Release mechanism for ordinance apparatus and the like
US3200707A (en) *1963-09-051965-08-17Standard Armament IncBomb arming solenoid
US3831486A (en) *1972-12-111974-08-27Ledex IncElectromagnetically operated latch
US3998124A (en) *1975-06-021976-12-21The United States Of America As Represented By The Secretary Of The NavyBomb rack arming unit
US4088055A (en) *1976-12-291978-05-09West William F.Arming device

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