EP0166074A2 - Aufschlagbetätigtes Kontaktelement für Geschoss - Google Patents

Aufschlagbetätigtes Kontaktelement für Geschoss Download PDF

Info

Publication number
EP0166074A2
EP0166074A2 EP85101471A EP85101471A EP0166074A2 EP 0166074 A2 EP0166074 A2 EP 0166074A2 EP 85101471 A EP85101471 A EP 85101471A EP 85101471 A EP85101471 A EP 85101471A EP 0166074 A2 EP0166074 A2 EP 0166074A2
Authority
EP
European Patent Office
Prior art keywords
projectile
conductors
sensor
circuit
impact
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.)
Withdrawn
Application number
EP85101471A
Other languages
English (en)
French (fr)
Other versions
EP0166074A3 (de
Inventor
Kenneth Sundvall
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.)
Affarsverket FFV
Original Assignee
Affarsverket FFV
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 Affarsverket FFV filed Critical Affarsverket FFV
Publication of EP0166074A2 publication Critical patent/EP0166074A2/de
Publication of EP0166074A3 publication Critical patent/EP0166074A3/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/14—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch
    • H01H35/146—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch operated by plastic deformation or rupture of structurally associated elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/06—Electric contact parts specially adapted for use with electric fuzes
    • F42C19/07—Nose-contacts for projectiles or missiles

Definitions

  • the present invention relates to an impact sensor for a projectile, comprising a source of power with an open circuit, which is so arranged as to be closed as the result of a deformation of the projectile at an impact by the projectile on a target, and a sensing element for the purpose of sensing said closing of the circuit.
  • the object of the present invention is, therefore, to propose an impact sensor of the type described by way of introduction, in which the circuit is insensitive to the surrounding environment, and in which the risk of unintentional short-circuiting is eliminated.
  • This object is achieved by the impact sensor in accordance with the invention having being given the characteristic features indicated in Claim 1.
  • Figure 1 shows a cross-section and a sectioned view of the nose part of a projectile fitted with an impact sensor in accordance with the invention.
  • Figure 2 shows part of Figure 1 on an enlarged scale.
  • Figure 3 shows a modified embodiment of a flexible conductor which forms part of the sensor in accordance with Figure 1.
  • Figure 1 shows a nose part of a projectile 1, of which the rest is not shown.
  • the reference 2 is used to denote the casing of the projectile.
  • the nose part of the projectile exhibits a centrally positioned, essentially cylindrical cap 3, not described here in any greater detail, which between itself and the casing 2 of the projectile forms an air gap 4; see Figure 2.
  • the cap 3 exhibits at its front end an annular step 5, which has the form of the generated surface of a truncated cone.
  • the projectile 1 is fitted with an impact sensor comprising a source of power 6, represented only schematically, and a sensing element, also represented only schematically, in the form of a fuse pipe 7.
  • the source of power 6 may, for example, have the form of a battery capable of being charged by the acceleeration of the projectile, or may be a piezoelectric generator. Since both the source of power 6 and the fuse pipe 7 may be of an arbitrary, conventional nature, they are neither shown nor described here in any greater detail.
  • the source of power 6 and the fuse pipe 7 exhibit an open circuit in the form of two extremely thin, strip-shaped, electrical copper conductors 8 and 9.
  • the conductors are embedded entirely in an electrically insulating material, for example in the form of a polyimide or polyester film, so as to form a so-called flexible conductor 10.
  • the conductors 8 and 9 thus have the form of a thin circuit pattern etched into the plastic foil.
  • the flexible conductor 10 is generally of the form shown in Figure 3, that is to say with an elongated part 11, in which the two conductors 8 and 9 run parallel with each other, and a sensor part 12, in which the two conductors 8 and 9 are routed adjacent to each other in pairs according to a pre-determined pattern.
  • the sensor part in Figures 1 and 2 has a rather different appearance than it does in Figure 3, where it is denoted by the reference 12'.
  • the sensor part 12' has the same form as the step 5, and is attached to the latter, for example by means of an adhesive or with the help of tape.
  • the elongated part 11 follows an appropriate inner profile inside the projectile, and is also attached to the latter by means of an adhesive or with the help of tape.
  • the circuit pattern in the sensor part 12 and 12' can have many different appearances, with those illustrated being only examples of conceivable patterns.
  • the two strip-shaped conductors 8 and 9 lie in the same plane. In an alternative embodiment, not shown here, they may lie one on top of the other, separated from each other by means of a layer of the aforementioned insulating material.
  • the casing 2 of the projectile exhibits,directly in line with the step 5, a stair-shaped reducing diameter intended to form a number (being three in the example shown) of annular, metallic edges 13, the sharp part of which is situated in the air gap 4 at a distance of up to about 0.5 - 1 mm from the step 5.
  • the edges 13 are best formed at the same time as the casing of the projectile is being manufactured.
  • the function of the impact sensor is as follows.
  • the casing of the projectile When the projectile strikes a target, the casing of the projectile is deformed in such a way that the edges 13 penetrate the insulating material in the flexible conductor 10 and make a contact between the conductors 8 and 9, causing a current to flow from the source of power 6 to the fuse pipe 7.
  • a desired function may be actuated in the projectile, for example the priming of an explosive charge (not shown).
  • the edge 13 will first cut through one of the conductors, and then through the interjacent insulating layer until the edge reaches the second conductor, causing the circuit to be closed.
  • edges 13 and the conductors 8, 9 are also conceivable within the scope of the invention to cause the edges 13 and the conductors 8, 9 to exchange places, that is to say to attach the insulated conductors to the inside of the casing of the projectile, and the edges to some component part of the projectile within the casing of the projectile.
  • the sensor part 12 or 12' of the flexible conductor can be arranged in the projectile at any point at which it is wished to provide an impact sensing function. It is also obvious that the edges may have a form other than that shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Burglar Alarm Systems (AREA)
  • Discharge Of Articles From Conveyors (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Spark Plugs (AREA)
  • Fuses (AREA)
EP85101471A 1984-03-08 1985-02-12 Aufschlagbetätigtes Kontaktelement für Geschoss Withdrawn EP0166074A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8401289 1984-03-08
SE8401289A SE437192B (sv) 1984-03-08 1984-03-08 Anslagssensor for en projektil

Publications (2)

Publication Number Publication Date
EP0166074A2 true EP0166074A2 (de) 1986-01-02
EP0166074A3 EP0166074A3 (de) 1986-01-08

Family

ID=20355057

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85101471A Withdrawn EP0166074A3 (de) 1984-03-08 1985-02-12 Aufschlagbetätigtes Kontaktelement für Geschoss

Country Status (4)

Country Link
EP (1) EP0166074A3 (de)
JP (1) JPS6177217A (de)
NO (1) NO850840L (de)
SE (1) SE437192B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4913057A (en) * 1987-04-03 1990-04-03 Aktiebolaget Bofors Armor piercing shell
US8297193B1 (en) * 2011-07-08 2012-10-30 Foster-Miller, Inc. Surrogate RPG
DE102017208920A1 (de) 2017-05-26 2018-11-29 Lithium Energy and Power GmbH & Co. KG Sensoranordnung und Batteriesystem aufweisend eine derartige Sensoranordnung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2070389A5 (de) * 1969-12-03 1971-09-10 Serat
FR2157152A5 (en) * 1971-10-20 1973-06-01 Serat Nose cone contactor for projectiles - with high degree of sensitivity
US4412114A (en) * 1982-03-03 1983-10-25 John Arbeeny Electrical switch
FR2528764A1 (fr) * 1982-06-18 1983-12-23 Lincrusta Procede de fabrication d'ogives pour munitions et ogives obtenues par ce procede

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4913057A (en) * 1987-04-03 1990-04-03 Aktiebolaget Bofors Armor piercing shell
US8297193B1 (en) * 2011-07-08 2012-10-30 Foster-Miller, Inc. Surrogate RPG
WO2013009348A1 (en) * 2011-07-08 2013-01-17 Foster-Miller, Inc. Surrogate rpg
DE102017208920A1 (de) 2017-05-26 2018-11-29 Lithium Energy and Power GmbH & Co. KG Sensoranordnung und Batteriesystem aufweisend eine derartige Sensoranordnung

Also Published As

Publication number Publication date
SE8401289D0 (sv) 1984-03-08
EP0166074A3 (de) 1986-01-08
JPS6177217A (ja) 1986-04-19
SE437192B (sv) 1985-02-11
NO850840L (no) 1985-09-09

Similar Documents

Publication Publication Date Title
RU2046277C1 (ru) Воспламенительное устройство для электродетонатора с замедлением и по меньшей мере одним основным зарядом в корпусе детонатора
US4109295A (en) Solderless circuit board component
US4683360A (en) Membrane switch combined with electroluminescent lamp panel
GB2074375B (en) Ptc elements
FR2800865B1 (fr) Initiateur pyrotechnique a filament photograve protege contre les decharges electrostatiques
HK82589A (en) Circuit protection devices
SE434191B (sv) Eltenddon, foretredesvis for artilleriammunition
HK94286A (en) Corrosion protection system
EP0166074A2 (de) Aufschlagbetätigtes Kontaktelement für Geschoss
WO2000026627A8 (en) Tactile pressure sensor
CA2279060A1 (en) Electronic missile location
US20130284043A1 (en) Silver bridge element slapper detonator
EP1365481A3 (de) Leiterplattenrandverbinder und Karte
US4063513A (en) Target sensing device
US4648320A (en) Detonator triggering device
SE452675B (sv) Anordning i form av en elektrisk sekring, som er kombinerad med ett anslutningsdon
US5293004A (en) Printed circuit board having an electromagnetic shielding layer
EP0864844A3 (de) Brückenzünder für Explosivstoffe und Verfahren zum Herstellen eines solchen Zünders
KR850004344A (ko) 음극선관의 내장저항기
WO2005045997A3 (en) An electrical circuit assembly with improved shock resistance
US4033657A (en) Buss barr
US4231041A (en) Electrically conducting lead termination apparatus for a thin film antenna
KR101430581B1 (ko) 연성회로기판과 절연시트가 적용된 충격감지장치
EP0388312A3 (de) Chipträger mit verbesserter Flexibilität
CN213812677U (zh) 柔性压力传感器

Legal Events

Date Code Title Description
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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

17P Request for examination filed

Effective date: 19850312

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LI NL

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LI NL

17Q First examination report despatched

Effective date: 19870331

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19870811

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SUNDVALL, KENNETH