EP0360186A2 - Dispositif de sécurité pour la fusée d'un projectile à rotation - Google Patents

Dispositif de sécurité pour la fusée d'un projectile à rotation Download PDF

Info

Publication number: EP0360186A2
Authority: EP; European Patent Office
Prior art keywords: retaining ring; rotor; detonator; safety device; swirl
Prior art date: 1988-09-20
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.): Granted

Application number

EP89117206A

Other languages

German (de)

English (en)

Other versions

EP0360186A3 (fr

EP0360186B1 (fr

Inventor

Adolf Bankel

Hans Strauss

Stephan Kerk

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.)

Diehl Verwaltungs Stiftung

Original Assignee

Diehl GmbH and Co

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.)

1988-09-20

Filing date

1989-09-18

Publication date

1990-03-28

1989-09-18 Application filed by Diehl GmbH and Co filed Critical Diehl GmbH and Co

1990-03-28 Publication of EP0360186A2 publication Critical patent/EP0360186A2/fr

1992-01-08 Publication of EP0360186A3 publication Critical patent/EP0360186A3/fr

1995-12-06 Application granted granted Critical

1995-12-06 Publication of EP0360186B1 publication Critical patent/EP0360186B1/fr

2009-09-18 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000009987 spinning Methods 0.000 title 1
230000002093 peripheral effect Effects 0.000 claims 1
230000001133 acceleration Effects 0.000 abstract description 5
239000000463 material Substances 0.000 description 5
230000035939 shock Effects 0.000 description 4
229910000831 Steel Inorganic materials 0.000 description 2
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
229910052782 aluminium Inorganic materials 0.000 description 2
229910052790 beryllium Inorganic materials 0.000 description 2
ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 2
239000010959 steel Substances 0.000 description 2
229910000906 Bronze Inorganic materials 0.000 description 1
230000002411 adverse Effects 0.000 description 1
239000010974 bronze Substances 0.000 description 1
KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
238000011161 development Methods 0.000 description 1
230000018109 developmental process Effects 0.000 description 1
239000002360 explosive Substances 0.000 description 1
230000005484 gravity Effects 0.000 description 1
230000007257 malfunction Effects 0.000 description 1
230000036316 preload Effects 0.000 description 1
230000000717 retained effect Effects 0.000 description 1

Images

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
- F42C15/20—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a securing-pin or latch is removed to arm the fuze, e.g. removed from the firing-pin
- F42C15/22—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a securing-pin or latch is removed to arm the fuze, e.g. removed from the firing-pin using centrifugal force

Definitions

the invention relates to a safety device for a swirl projectile detonator according to the preamble of claim 1.
Malfunctions can result from the uneven masses of the U-shaped retaining ring.
the launch acceleration and the swirl can tilt the retaining ring during the return and opening stroke in the radial groove on the housing so that the legs prevent the rotor from absorbing the swirl necessary for the function.
the retaining ring can jam in its rearward position due to an unintentional impact and lock the rotor securely. In both cases, explosive unexploded ordnance exists after the launch.
the object of the invention is to provide a swirl projectile detonator consisting of a few parts, which functions safely when the swirl projectile is fired, in which the rotor is released and which, even after rough handling, ensures that the rotor is countered.
Essential for the invention are the retaining ring which bears against the rotor with radial preload and which, by means of its conical seat on the centering mandrel, non-positively fixes the rotor in the igniter housing.
the retaining ring allows the rotor to be countered, for example in drop tests with reduced requirements up to approx. 6000g or impact loads when handling a projectile.
the almost closed retaining ring supports the rotor on the igniter housing in the radial direction.
the inertial forces of the rotor are diverted from the retaining ring into the igniter housing.
Adverse deformations of the retaining ring cannot occur due to its relatively high section modulus. Such deformations can not be avoided in the U-shaped retaining ring according to DE-OS 20 09 988 due to its substantially low resistance moments in its longitudinal direction. Such a deformation of the known retaining ring can lead to the rotor not being unsecured despite existing trigger criteria.
a securing device 1 provides a retaining ring 2 on a conical centering mandrel 3 within a conical annular space 30 of a detonator housing 7.
the retaining ring 2 is resiliently pretensioned on the centering mandrel 3 and presses a spherical rotor 5 via an end face 11 into a spherical expansion 20 within a bore 8 of the igniter housing 7.
the rotor 5 has a detonator 15, an annular groove 4 with the end face 11 and a base 10 and a fixing cone 16 for a securing sleeve 17.
An annular gap 19 lies between the base 10 and the retaining ring 2.
the retaining ring 2 is provided with an inner cone 9, a radial surface 51 and with an outer cone 12. It is resiliently biased via a slot 29 (FIG. 2). According to FIG. 2, it has a keyway profile, as a result of which there are inner support tabs 25 with recesses 26 therebetween.
the support tabs 25 have curved support surfaces 27 corresponding to the annular groove 4.
a ring 28 carries the support tabs 25, the ring 28 being separated by a slot 29.
the retaining ring 2 consists of a tough material with a certain initial elasticity corresponding to the width of the slot 29 (Fig. 2) and high breaking strength. Suitable materials are beryllium, aluminum and steel.
the securing device 1 of a swirl igniter (not shown further) reacts to the launch acceleration acting in the direction of arrow 50 by an axial stroke of the retaining ring 2 into the position according to FIG. 4.
the retaining ring 2 consists of a beryllium bronze. This material ensures that, due to the centrifugal forces, it lies completely against the cone 13.
the webs 14 lying between the support tabs 25 are plastically, that is, permanently deformed.
the rotor 5 released by the holding ring 2 aligns itself in the position shown in FIG. 4 due to its center of gravity, the securing sleeve 17 being pushed back by the fixing cone 16.
the spherical recesses 20, 21 serve as plain bearings.
the rotor 5 is locked in the focus shown in this figure by means not shown.
the ignition needle 18 strikes the detonator 15 in a known manner. Its ignition energy then initiates a transfer charge 52. If a shock is exerted on the safety device 1 according to arrow 50 during a drop test or rough handling, the retaining ring lifts 2 slightly away from the rotor 5 and, after the impact, will resume its position on the rotor 5 as shown in FIG. 1 due to its spring force.
the securing sleeve 17 ensures that the rotor 5 remains in the safe position according to FIG. 1 in the phase in which the retaining ring 2 is lifted off the rotor.
the spring-loaded mounting of the rotor 5 by the retaining ring 2 is also advantageous. This creates a gap 49 in that the rotor 5 is pressed into the recess 20 in the igniter housing 7. In the event of shock loads, there is therefore the possibility for the rotor 5 of a spring-damped misalignment within the bore.
the ignition threshold of the detonator 15 in the case of shock loads is thus significantly lower than in the case of detonators according to the prior art.
Suitable materials for the retaining ring 2 are aluminum or steel.
the required material properties are high breaking strength and high toughness.

Landscapes

Engineering & Computer Science (AREA)
General Engineering & Computer Science (AREA)
Air Bags (AREA)
Portable Nailing Machines And Staplers (AREA)
Spinning Or Twisting Of Yarns (AREA)
Toys (AREA)

EP89117206A 1988-09-20 1989-09-18 Dispositif de sécurité pour la fusée d'un projectile à rotation Expired - Lifetime EP0360186B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3831862A DE3831862A1 (de)	1988-09-20	1988-09-20	Sicherungseinrichtung fuer einen drallgeschosszuender
DE3831862		1988-09-20

Publications (3)

Publication Number	Publication Date
EP0360186A2 true EP0360186A2 (fr)	1990-03-28
EP0360186A3 EP0360186A3 (fr)	1992-01-08
EP0360186B1 EP0360186B1 (fr)	1995-12-06

Family

ID=6363293

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP89117206A Expired - Lifetime EP0360186B1 (fr)	1988-09-20	1989-09-18	Dispositif de sécurité pour la fusée d'un projectile à rotation

Country Status (3)

Country	Link
US (1)	US4942816A (fr)
EP (1)	EP0360186B1 (fr)
DE (2)	DE3831862A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5243912A (en) *	1991-12-09	1993-09-14	General Electric Co.	Arming delay, dual environment safe, fuze
ES2135987B1 (es) *	1995-04-04	2000-05-16	Fabricaciones Extremenas S A F	Mecanismo de seguridad y armado para espoletas en proyectiles giroestabilizados.
EP1278039B8 (fr) *	2001-07-16	2006-03-15	RWM Schweiz AG	Dispositif de sécurité et d'armement et son application
DE102005003942B4 (de) *	2005-01-28	2007-04-12	Junghans Feinwerktechnik Gmbh & Co. Kg	Sicherungseinrichtung für einen Drallgeschosszünder
FR3039267B1 (fr) *	2015-07-24	2017-07-14	Nexter Munitions	Dispositif de securite et d'armement pour une fusee d'ogive et fusee comportant un tel dispositif
US12180960B2 (en)	2023-05-15	2024-12-31	Spherical Rotors Inc.	Rotary positive displacement device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3608494A (en) *	1969-03-05	1971-09-28	Gen Electric	Time delay fuse
US3595169A (en) *	1969-09-18	1971-07-27	Gen Electric	Time delay fuze
DE2539750C3 (de) *	1975-09-06	1980-06-19	Diehl Gmbh & Co, 8500 Nuernberg	Sicherungseinrichtung für einen Drallgeschoßzünder
DE3049082C2 (de) *	1980-12-24	1984-08-23	Diehl GmbH & Co, 8500 Nürnberg	Sicherungseinrichtung für einen Zünder
DE3262029D1 (en) *	1981-06-30	1985-03-07	Oerlikon Buehrle Ag	Safety means for a fuze of a spin-stabilised projectile
US4480551A (en) *	1983-06-08	1984-11-06	Whittaker Corporation	Point-detonating variable time-delayed fuze
DE3435402A1 (de) *	1984-09-27	1986-04-03	Gebrüder Junghans GmbH, 7230 Schramberg	Kugelfoermiger sicherungsrotor eines drallgeschosszuenders

1988
- 1988-09-20 DE DE3831862A patent/DE3831862A1/de active Granted
1989
- 1989-09-15 US US07/408,141 patent/US4942816A/en not_active Expired - Fee Related
- 1989-09-18 DE DE58909527T patent/DE58909527D1/de not_active Expired - Fee Related
- 1989-09-18 EP EP89117206A patent/EP0360186B1/fr not_active Expired - Lifetime

Also Published As

Publication number	Publication date
DE3831862A1 (de)	1990-03-22
DE58909527D1 (de)	1996-01-18
DE3831862C2 (fr)	1991-06-06
EP0360186A3 (fr)	1992-01-08
EP0360186B1 (fr)	1995-12-06
US4942816A (en)	1990-07-24

Legal Events

Date	Code	Title	Description
1990-02-10	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1990-03-28	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): DE FR GB NL SE
1991-11-15	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1992-01-08	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): DE FR GB NL SE
1992-01-29	17P	Request for examination filed	Effective date: 19911202
1993-09-22	17Q	First examination report despatched	Effective date: 19930810
1995-10-20	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1995-12-06	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE FR GB NL SE
1995-12-06	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19951206
1996-01-18	REF	Corresponds to:	Ref document number: 58909527 Country of ref document: DE Date of ref document: 19960118
1996-02-21	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 19960122
1996-04-05	ET	Fr: translation filed
1996-05-01	NLV1	Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
1996-10-11	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1996-10-11	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1996-11-27	26N	No opposition filed
1997-06-03	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Effective date: 19970603
1999-07-28	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19990728 Year of fee payment: 11
1999-09-13	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19990913 Year of fee payment: 11
1999-09-28	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: SE Payment date: 19990928 Year of fee payment: 11
2000-09-18	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000918
2000-09-29	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 20000929
2001-05-09	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20000918
2001-05-21	EUG	Se: european patent has lapsed	Ref document number: 89117206.6
2001-05-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010531
2001-06-29	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST

Publication	Publication Date	Title
DE2907309C2 (de)	1982-12-30	Aus einem Geschoß auszustoßendes Tochtergeschoß
EP0360187B1 (fr)	1995-04-19	Dispositif de sécurité pour la fusée d'un projectile à rotation
DE2305677C2 (de)	1982-10-14	Sicherungsvorrichtung für einen Detonator eines Minenzünders
DE2550093C3 (de)	1980-01-17	Beharrungszünder für Drallgeschosse mit Selbstzerlegereinrichtung
DE19913048A1 (de)	2000-10-12	Niederhalter für Satelliten-Solargeneratoren
EP0360186B1 (fr)	1995-12-06	Dispositif de sécurité pour la fusée d'un projectile à rotation
DE3119369C2 (de)	1985-04-11	Beharrungszünder für Drallgeschosse mit Selbstzerlegereinrichtung
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DE102005003942B4 (de)	2007-04-12	Sicherungseinrichtung für einen Drallgeschosszünder
EP0042957A2 (fr)	1982-01-06	Fusée pour projectiles à rotation
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DE69605332T2 (de)	2000-03-23	Vorrichtung zum Sichern und Schärfen des Zünders eines Geschosses
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CH665021A5 (de)	1988-04-15	Drallgeschosszuender.
DE2008157C3 (de)	1979-08-09	Hohlladung
EP0267407B1 (fr)	1991-01-16	Dispositif de sureté pour l'amorce d'une tête de projectile
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