DE2350915A1 - LOCKING ROTOR WITH TILTING ROTOR FOR STORIES WITH TWIST - Google Patents

Description

ETAT FRZl] ₁ OAIS Represente per Ie Kini ^ + re d'Kta t chorgf. de la Defense! rationale Delegation Kinisi-irielle pcnir 1 '\ rrr.erner.t Direction Technique des Araements Terrestres Tltsblisraenent el'Etudes et de imbrications d ¹ Armer, ε nt de Bourses 4, Avenue de la Porte d'Issy, 75 Pari «15, France

Impact fuse with tilt rotor for bullets with twist.

The invention relates to percussion fuses

with tilting rotor for equipping projectiles that have a rotating movement run around their axis, especially small projectiles or medium caliber (e.g. with a caliber between 15 and mm).

It should first be made clear that under

the term "impact fuse with tilting rotor" is to be understood as a fuse with an iia general spherical, spheroidal or also possibly cylindrical rotor, which cles between a front Schlageleiaent (impact organ, which is assigned to a primary primer or not) and a rear element of the pyrotechnic chain Detonator is arranged and a through hole on v / eiet, which "a pyrotechnic charge (primary primer or secondary relay) for ignition of the rear element when the tube comes into operation, the rotor so inserted into the body of the tinder is that by tilting it out of a

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position in which this hole is not in alignment with the front Selilagelement and the rear element of the pyrotechnic Side of the detonator (causing the Sunduns of this rear Element in the event of accidental inactivity de3 3chla:; orhans or the accidental explosion of a primary primer is made impossible) go into a working position can, in v / elcher the front impact element, which the pyrotechnic The hole containing the charge and the rear element of the pyrotechnic chain of the scale are in alignment, so that the rear element in the inactivity of the front Striking element can be healed by the pyrotechnic charge can.

This is what happens with such a detonator

Tilting of the rotor during launch (to transition to its rest position in its working position) generally by the centrifugal force generated by the rotation of the projectile around its axis, and before the launch is of course for safety reasons (safety of storage, handling and supply to the Uaffe) the Eotor provisionally in the rest position a locking device is locked, which is designed so that it is blocked by the forces that occur during firing (in generally by the centrifugal force) is rendered ineffective.

As is well known, the present endeavor is halted for percussion fuses in general and for percussion fuses with tilting rotors in particular to increase the safety of the front pipe, i.e. to increase the distance between the muzzle of the firearm and the point of the trajectory of the projectile, of which from which the tinder is "ready to ignite", i.e. can work by impact ignition in the event of an impact.

In the case of percussion fuses, one falls below the

Effect of a centrifugal tilting motor, the front pipe safety obviously changes in the same direction with the duration of the entire tilting path, which brings the rotor from its rest position to its working position, whereby this duration in turn is an increasing function of the vertical amplitude of the entire tilting path under otherwise identical circumstances longish walk a longer duration for traversing the same result has, and a decreasing function of the strength of the original Kippsio-

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BATH ORIGINAL

ηent, which moves the rotor from its rest position to its Seeks to bring the working position, since an originally smaller overturning moment results in a lower angular acceleration of the rotor generated.

The above theoretical considerations show that it is necessary to increase the safety of such a pipe Zunders with tilting rotor would be useful, the Kippveg of his Rotors to enlarge and the size of the original Reduce the tilting moment, which brings the rotor from its rest position to its working position, see below.

However, so far the professionals have this

theoretical knowledge is not used, for practical reasons, which should be clarified here, in order to preserve the originality and to better work out the wetness of the invention.

In the case of the known detonators with tilt rotor

The rotor had an asymmetry in relation to the axis of the hole containing the pyrotechnic charge, which was perpendicular to the longitudinal plane, which resulted in an imbalance the effect of centrifugal force came into a stable equilibrium position, i.e. a position in which it moved away from the axis of the Fuse was furthest away.

As a result of this asymmetrical training

of the tilting protector of such "detonators (including its pyrotechnics Charge) it was impossible for the rotor to tilt in one or the other direction, so that its Imbalance take one or the other of the two possible stable (diametrically opposite) equilibrium positions can.

For such an asymmetrical rotor

therefore a rest position had to be chosen, in which had its unbalance a noticeable distance from the axis of the scale, whereby, indeed, the tilting direction of the rotor was precisely defined, but only a total tilting path of less than SO 'was possible, in which case the pyrotechnic Charge-containing bore in the rest position of the rotor had an inclined position relative to the axis of the detonator.

If the rotor of such a detonator

409 8 1

was in the rest position, a considerable force acted on it after the detonator had received its rotary motion its imbalance was away from the axis of the detonator. Incidentally, this condition was considered favorable by the experts, who wanted the force acting on the rotor to be able to ensure its start-up and the frictional resistance to overcome

At this earlier prior art had

so the entire tilting path of the rotor is by far not the greatest possible amplitude (90 °), and the initial overturning moment was intentionally set to a considerable value «

In other words, for structural reasons

the experts had turned to solutions that do not allow the achievement of increased pipe security, since you to the choice of a reduced tilting path and a large initial moment had led.

There is also the risk that this considerable initial period will, to a certain extent, be frictional forces generated, what the .working (during unlocking) of the locking system of the tilting rotor.

The invention now aims at these Hachteile to remedy the previously known percussion fuse with tilt rotor, i.e. to produce such a fuse, which, a has increased front pipe security and has a system for locking its rotor, which works when unlocking success is not disturbed by the forces acting on the rotor.

The inventive impact fuse for

A bullet with a twist has a fuse body in which a Front impact element that is sensitive to an impact (generally one that may be assigned to a primary primer Impact organ) and a tilting rotor are used, which between the impact element and a rear element of the pyrotechnic chain of the scale is arranged and contains a through hole, which a pyrotechnic charge to Ignition of the rear element picks up, the tilt rotor up toEi firing provisionally by one by the action of the the centrifugal force generated by this launch releasable locking

4 09816/092 7
BAD ORIGINAL "C '* ^

gelation device is held in a rest angle position in which this hole is not in alignment with the front striking element and the rear element of the pyrotechnic chain of the scale, and is characterized in that its tilt rotor (including the pyrotechnic charge contained in it see no imbalance) possesses in that the pyrotechnic charge with respect to the transverse center · = level of this bore containing completely symmetrical contained in its rotor, that the rotor is designed so that it is = standardized axis has _s and that the rest position of the rotor arranged to a main structure that its main axis of inertia in this rest position forms an angle of 90 ° with the axis of the detonator _s so that this rest position is an unstable equilibrium division, from which, with the swirl of the scale, the rotor reaches its working position through an angular path of 90 ° in one or the other tries to reach the other sense, because a moment occurs which under the effect of centrifugal force and as soon as the rotor has left its rest position of unstable equilibrium even in the slightest, tries to bring the main axis of inertia of the rotor and the spin axis of the scale into alignment _? so that the pyrotechnic charge contained in the rotor is then aligned on the front striking element and the rear element of the pyroteolxnic chain of the scale ο

It should be noted ₃ that the on the projectile

in the barrel of the weapon and "on its exit from it as a result of the constructive play disturbances (precession and mutation) are by far sufficient to bring the rotor slightly out of its unstable equilibrium position * as soon as the unlocking device has become effective, which is the immediate The occurrence of the above-mentioned tilting moment as a result has ο

Due to the long symmetry in the rotor

contained pyrotechnic charge, the meaning of the tilting movement of the same is irrelevant ₉ since the rotor is in exactly the same position with respect to the front impact element "and the rear pyrotechnic element" in any direction of _{tilt s} after its working position through an angular path voa in the one odor the other sense achieved by nato • · Such a whipping scale with tilting protos?

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C * "2350315

without imbalance, its rest position by 90 ° against the axis of the
Zunders Tersehoben is opposite to a known Tinder of the same lrt _? However, with a tilting rotor with unbalance, whose rest division is shifted about 45 ° against the axis of the scale j increased gate security, since on the one hand the entire tilting path of the rotor has a larger amplitude (roughly double), and on the other hand the tilting moment, which causes the rotor to start as soon as
the latter has only been removed from its unstable rest position in the slightest, then has a very small value, where @s begins with the value Hull in the exact position of the unstable balance weight, then goes through a hazard and is supposed to be after the arrival of the rotor falls back to the value KuIl in the working position «

Although the tilt rotor is a cylindrical one

Form and then be able to rotate it about an axis perpendicular to the Di'allaelise of the tinder, is spherical or spheroidal lor-m chosen for the gate, ₉ and it is placed in a storage area accordingly? lor-m stored _s so that after as;: = release a complete freedom of movement t ~ esitst _? dolle in. allen Koohtuingenc

Naailicli has this kind of freedom for the Eotor at Beinern when it comes to transitioning from its SielierliaitsstelliHig.
ssiae siäid prepared position dia kgiiolikeit of a gradual "initiation and sines longer 'feg®ε sor ^ olgej whereby a corresponding gain in yorrolirsieiierlieit distorts»

The © rfindungsgösiass achieved Gewiiia

Yo ^ rotosiclierlieit is very bad and under otherwise the same circumstances can lead to a torrolirsiölieriisit föteea ₉ multiplied by a factor multiplied by ei & sm, which makes it possible to increase the amount of money between 10 "and 30 matern" cad more and such, currently aimed at in the level of security Fourth of the pipe safety can not with one
usual Aufsehlagzundei 'with a rotor set to 45 ° with Unv / uoht and without a special delay device can be achieved «» ■ ... ■ · -.

It is insnnwissiic that the srfinäungsgeaäas obtained "progress from an original plan

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ORIGINAL BATHROOM

of the structure and the division of the rotor of the scale originates, which "remains particularly simple and cheap.

It is also to be noted that an inventor ~

appropriately trained and fixed in its angular position Rotor quite in the usual whipping scale with tilting rotor can be installed instead of its own eotor., where the security of the pipe was considerably increased by this council will.

learner is to "notice" that through the

Findingsgeinässen low value of the rotor in the rest position acting tilting moment Every handicap and every disturbance when releasing the rotor in the rest position hai * tendency locking device is avoided »

As stated above, «requires the invention

for the rotor the presence of a main axis of inertia, which is achieved very simply by the fact that the bore for receiving the pjrotechnical charge is formed through a diameter bore ₉ whereby a pyrotechnic charge is selected, the density of which is lower than that of the material forming the rotor c, where then the main axis of inertia of the rotor coincides with the axis of the bore.

The absence of an imbalance in the rotor is required not necessarily a complete symmetry of the same (A j? shape asymmetry can be compensated for by a balancing mass be), but it seems easier ^ to choose a rotor which, including its pyrotechnic charge, is completely symmetrical with respect to the transverse median plane of the bore containing this pyrotechnic charge

For this ₉ as "already indicated, a spherical shape (with or without flattening) is preferably chosen for the rotor, the rotor then being guided by bearing surfaces in the form of spherical caps.

The pyrotechnic charge housed in the rotor, which is in reference to the transverse center plane of its housing Bore must be symmetrical, so that it is in the working position behaves in the same way for the two possible tilting directions of the rotor j can either be achieved by a single element, or formed by two elements which are spaced apart and symmetrical with respect to this central plane

BAD, QBJGJNAL ₁

are arranged.

Finally, you can increase it further

the pipe safety of the tinder, by fourth of the order of magnitude from 40 to 50 meters and even more can be achieved with the Device for locking its rotor can be combined with an additional delay system, e.g. one (known per se) Design with the unwinding of a spiral band under the effect of centrifugal force, which is caused by this delay system The delay achieved is added to the delay which is preceded by the duration of the tilting movement of the rotor by 90 ° and join this *

The invention is explained below by way of example with reference to the drawing.

Pig. 1 shows a partially axially sectioned Side view of a first embodiment of an inventive Percussion fuse with its rotor in the rest position.

Pig. 2 shows in the same way as

1 shows another embodiment according to the invention of such a type. Detonator

The one in Pig. 1 shown detonator for a

Projectile with twist v / eist a fuse body 1, which is behind is provided with a detonator 2 and has a thread 1a for its placement on the nose of a projectile

In the igniter body 1 is a spherical one

Tilting rotor 3 arranged, which has no imbalance and has a diameter bore 4, in which two, pyrotechnic Elementary charges 5a and 5b are accommodated, which one Be spaced from each other and symmetrical with respect to the transverse central plane the bore 4 are arranged.

The rotor 2 is v / ird by spherical contact surfaces 6 held and guided, which its position between the detonator 2 and the firing pin 7.

Such a tilting rotor has a main axis of inertia coinciding with the axis of the bore 4

A releasable locking device.

holds the rotor 3 in the rest position in such a way that its main axis of inertia S-X perpendicular to the spin axis Y-X of the detonator

409816/0922 BATH ORIGINAL

lies, this locking device by oblique split pins 8 is formed, soft in opposite, formed in the rotor 3 or the bearing surfaces 6 for guiding the rotor Exceptions are introduced and due to the effect of centrifugal force, they recede into the recesses 8a provided for this purpose, provisionally in the working position by a Hing 9 held v / earth, which by the effect of centrifugal force radially is expanded.

Such a scale works as follows: When fired, the ring 9 spreads apart, whereby it releases the split pins 8, which then recede into their recesses 8a and thus release the rotor 3 »This immediately leaves its unstable equilibrium position under the action of the perturbing movements to which the projectile is subjected and gradually begins to turn, turning over Tilts 90 ° in order to achieve a stable position of equilibrium with a screw movement in which. Its main axis of inertia Σ-Χ coincides with the axis Y-Y de3 Zunders »

Such a detonator has a considerable Yorrohr safety due to its relatively long. Helical movement (in one sense or the other) - which its rotor must perform, as well as due to the smallness of the to Beginning of the moment acting on the rotor

Furthermore, due to the smallness of the initial tilting moment, the cotter pins 8 move back without friction or jamming, and the unlocking of the rotor cannot give rise to malfunctions, so the rotor actually does reaches its stable working position with a certain delay, in which the pyrotechnic elementary charges 5a and 5b are aligned with the firing pin 7 and the detonator 2

From that moment on, the detonator is on

ready to ignite, and upon impact the ignition pin 7 causes the ignition of the (depending on the tilting direction of the rotor 3) opposite of the two elementary charges 5a or 5b, which then fulfills the task of a primer while the other 2 'elementary charge the task of a relay for the detonator 2 fulfilled.

409816/0922

In. Pig »2 is another embodiment

of an impact fuse according to the invention with a tilting rotor _} the same reference numerals denoting the same parts as in FIG. 1.

The one in 3? 2 shows the scale shown stand out from your the pig. 1 by training the pyrotechnic η charge of its rotor, which is spread through a single symmetrical on both sides of the transverse center plane of its bore extending element 5 is formed, and on the other hand by the training he device for locking the rotor 5, which is formed by a radially expandable snap ring 10, which is located on a shoulder formed in the wall of the rotor 10a is supported and temporarily held in the closed position by a spiral belt 11, which in turn is through a snap ring 12, which can be expanded radially by centrifugal force, is held wound.

When fired, the ring 12 releases the spiral band 11, which moves with a certain delay (which forms an additional upstream pipe security), what , the ring 1C opens radially and releases the rotor, v / elcher then through the same process as the detonator shown in Fig. 1 reaches its working position.

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Claims (6)

Claims ί1 Λ Impact fuse for projectiles with twist with a detonator body in which an impact sensitive front beater element ((7) and a tilt rotor (3) are used, which is arranged between the striking element and a rear element (2) of the pyrotechnic chain of the detonator is and contains a through hole (4) which a pyrotechnic charge (5 or 5a, 5b) to ignite the rear element (2) receives, the tilt rotor (3) provisionally by a through the action of the ~ Sen launch generated centrifugal force releasable locking device is held in its resting angle position, in v / elcher this hole (4) is not in alignment with the front impact * element (7) and the rear element (2) of the pyrotechnic chain of the detonator, characterized in that its tilting rotor (3), including the pyrotechnic charge contained in it, does not have any imbalance that the one in its rotor contained pyrotechnic charge (5 or 5a, 5b) in relation to the transverse center plane of the bore (4) containing this completely is symmetrical that the rotor (3) is designed so that it has a main axis of inertia (X-X), and that the rest position of the rotor is such that its main axis of inertia (X-S) in this rest position forms an angle of 90 ° with the Axis (Ύ-Υ) of the scale forms, so that this rest position is a unstable equilibrium position is the starting point for the twist of the igniter of the 3Iotor its working position by "an angular path, tries to reach 90 ° in one sense or the other, because a tilting moment occurs, which under the effect of centrifugal force as soon as the rotor has left its rest position of unstable equilibrium even in the slightest, the main axis of inertia (X-X) of the rotor and the spin axis (Y-X) of the igniter in tries to escape, so that then contained in the rotor pyrotechnic charge on the front striking element (7) and the rear element (2) of the pyrotechnic chain of the scale is aligned 2.) percussion fuse according to "claim 1, characterized characterized in that its tilt rotor is a spherical or spheroidal Has shape and has a diameter bore which 409816/0922
BATH picks up a pyrotechnic charge, the density of which is less than that of the square material forming the rotor, in which case the main axis of inertia of the rotor coincides with the axis of this diameter bore 3.) percussion fuse according to claim 1 or 2, characterized in that its tilting rotor (including its pyrotechnic charge) in relation to the transverse median plane the bore (4) containing this pyrotechnic charge completely is symmetrical. 4.) Impact fuse according to claim 3, characterized in that the pyrotechnic charge of its tilting protector formed by two identical elementary charges (5a, 5b) which are at a distance from each other and symmetrical with respect to the transverse median plane of the charge containing this Bore (4) are arranged 5.) percussion fuse according to claim 3, characterized characterized in that the pyrotechnic charge (5) of its tilting protector is formed by a single element, the plane of symmetry of which with the plane of symmetry of the bore containing this element (4) coincides. 6.) Impact fuse according to one of claims 1 to 5, characterized in that the device (10) is equipped with a delay system (11, 12) for locking its tilting rotor, which releases this locking device delayed and thus provides additional pipe security. 409816/09 ??