EP1342047A1 - Infra-red emitting decoy flare - Google Patents

Infra-red emitting decoy flare

Info

Publication number
EP1342047A1
EP1342047A1 EP00993925A EP00993925A EP1342047A1 EP 1342047 A1 EP1342047 A1 EP 1342047A1 EP 00993925 A EP00993925 A EP 00993925A EP 00993925 A EP00993925 A EP 00993925A EP 1342047 A1 EP1342047 A1 EP 1342047A1
Authority
EP
European Patent Office
Prior art keywords
flare
infra
primer
spectral
red emitting
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.)
Granted
Application number
EP00993925A
Other languages
German (de)
French (fr)
Other versions
EP1342047B1 (en
Inventor
James Dominic DERA Farnborough CALLAWAY
Timothy Douglas DSTL SUTLIEF
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to AT00993925T priority Critical patent/ATE318403T1/en
Publication of EP1342047A1 publication Critical patent/EP1342047A1/en
Application granted granted Critical
Publication of EP1342047B1 publication Critical patent/EP1342047B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
    • F41J2/00—Reflecting targets, e.g. radar-reflector targets; Active targets transmitting electromagnetic or acoustic waves
    • F41J2/02—Active targets transmitting infrared radiation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/56—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies
    • F42B12/70—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies for dispensing radar chaff or infrared material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B4/00—Fireworks, i.e. pyrotechnic devices for amusement, display, illumination or signal purposes
    • F42B4/26—Flares; Torches

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

An infra-red emitting decoy flare capable of diverting an incoming missile equipped with a counter-countermeasures system away from an intended target consisting of a primer flare (2), a spectral flare (4) and a means for igniting the primer flare (22, 30), all contained within a flare casing (6). The primer flare (2) is formed from a fast burning pyrotechnic composition and is adapted to produce an intense infra-red source of short duration on ignition. The spectral flare (4) is ignited by the burning of the primer flare (2) and is adapted to produce a slower burning composition having a fixed ratio in the intensity of infra-red radiation emitted, when burning, in at least two fixed bands.

Claims

-13-CLAIMS
1. An infra-red emitting decoy flare comprising a flare casing (6), two pyrotechnic components housed within the flare casing and an ignition means (30) for igniting the pyrotechnic components characterised in that the two pyrotechnic components comprise a primer flare (2; 50) and a spectral flare (4) wherein the primer flare (2; 50) consists of at least one primer pellet (8; 42; 52), each primer pellet being composed of a fast burning pyrotechnic composition and being adapted such that, in use, ignition of one primer pellet causes rapid ignition of all the primer pellets to produce an intense infra-red source, wherein the spectral flare (4) consists of at least one spectral pellet (10), each spectral pellet being of a pyrotechnic composition adapted such that, in use, ignition of the spectral pellets produces a spectral infra-red source wherein the ratio of the intensity of the infra-red spectrum at at least two fixed bands is within a fixed range, and wherein the primer flare (2; 50) and spectral flare (4) are adapted such that, in use, the spectral flare (4) is still burning after the primer flare (2; 50) has finished burning.
2. An infra-red emitting decoy flare as claimed in claim 1 wherein the spectral flare (4) is adapted such that the intensity of the infra-red radiation emitted, in use, is greater than that normally emitted from an intended target.
3. An infra-red emitting decoy flare as claimed in claim 1 or claim 2 wherein the primer flare (2) comprises a stack of discs (8) of a pyrotechnic composition.
4. An infra-red emitting decoy flare as claimed in any preceding claim wherein the primer flare (2) is provided with a central hole (12). -14-
5. An infra-red emitting decoy flare as claimed in any of the preceding claims wherein the primer flare (2) is provided with a plurality of holes (44).
6. An infra-red emitting decoy flare as claimed in any of claims 1 to 4 wherein the primer flare (50) has a plurality of grooves (54) in its surface.
7. An infra-red emitting decoy flare as claimed in any preceding claim wherein the bum time of the primer flare (2; 50) is within the range of 100 to 600ms.
8. An infra-red emitting decoy flare as claimed in claim 7 wherein the bum time of the primer flare (2; 50) is in the range of 150 to 250ms.
9. An infra-red emitting decoy flare as claimed in any preceding claim wherein the spectral flare (4) comprises a single pellet (10).
10. An infra-red emitting decoy flare as claimed in claim 9 wherein the spectral flare (4) is provided with a central hole (14).
11. An infra-red emitting decoy flare as claimed in any preceding claim wherein the spectral flare (4) and primer flare (2; 50) are adapted such that, in use, the spectral flare is ignited by the burning of the primer flare
12. An infra-red emitting decoy flare as claimed in any preceding claim wherein the primer flare (2; 50) is formed from a fast burning magnesium-Teflon-Niton composition.
13. An infra-red emitting decoy flare as claimed in any of claims 1 - 11 wherein the primer flare (2; 50) is formed from a pyrotechnic composition adapted such that, in use, ignition of the primer pellet produces an intense spectral infra-red source wherein the -15- ratio of the intensity of the infra-red spectrum at at least two fixed bands is within a fixed range.
14. An infra-red emitting decoy flare as claimed in claim 13 wherein the primer flare (2; 50) is comprised from a composition of potassium benzoate, potassium perchlorate and a binder chosen from the group of RDX, HMX or HNS.
15. An infra-red emitting decoy flare as claimed in any preceding claim wherein the spectral flare (4) is formed from a pyrotechnic composition which produces quantities of gas on ignition.
16. An infra-red emitting decoy flare as claimed in any preceding claim wherein the spectral flare (4) is formed from a composition having an organic fuel, an oxidant and a binder.
17. An infra-red emitting decoy flare as claimed in claim 16 wherein the organic fuel is chosen from the group comprising sucrose, lactose, starch and potassium benzoate.
18. An infra-red emitting decoy flare as claimed in any of claims 1 to 15 wherein the spectral flare (4) is formed from a composition having a boron fuel, an oxidant and a binder.
19. An infra-red emitting decoy flare as claimed in any of claims 16 - 18 wherein the oxidant is chosen from the group of potassium perchlorate, potassium nitrate, sodium nitrate and ammonium nitrate.
20. An infra-red emitting decoy flare as claimed in any of claims 16 - 19 wherein the binder is chosen from the group of Niton A, dextrin or polybutyl rubber. -16-
21. An infra-red emitting decoy flare as claimed in any of claims 16 - 19 wherein the binder is an explosive material having a waxy composition.
22. An infra-red emitting decoy flare as claimed in claim 21 wherein the binder is chosen from the group of RDX, HMX and HNS.
23. An infra-red emitting decoy flare as claimed in claim 1 wherein the spectral flare composition (4) is formed from a mix of 30-40% by mass of potassium benzoate and 60-70% by mass of potassium perchlorate together with 3-8% by mass of Niton A, RDX, HMX or HΝS.
24. An infra-red emitting decoy flare as claimed in claim 1 wherein the spectral flare composition (4) is formed from a mix of 30% by mass of boron and 70% by mass of potassium nitrate together with a Niton A binder.
25. An infra-red emitting decoy flare as claimed in any of claim 18 wherein the spectral flare composition (4) comprises an additive such as silicon.
26. An infra-red emitting decoy flare as claimed in claim 25 wherein the spectral flare composition (4) is formed from a mix of 20% by mass of boron, 10% by mass of silicon and 70% by mass of potassium nitrate together with a Niton A binder.
EP00993925A 2000-12-13 2000-12-13 Infra-red emitting decoy flare Expired - Lifetime EP1342047B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT00993925T ATE318403T1 (en) 2000-12-13 2000-12-13 INFRARED LIGHT KIT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/GB2000/004762 WO2002048641A1 (en) 2000-12-13 2000-12-13 Infra-red emitting decoy flare

Publications (2)

Publication Number Publication Date
EP1342047A1 true EP1342047A1 (en) 2003-09-10
EP1342047B1 EP1342047B1 (en) 2006-02-22

Family

ID=9886604

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00993925A Expired - Lifetime EP1342047B1 (en) 2000-12-13 2000-12-13 Infra-red emitting decoy flare

Country Status (7)

Country Link
US (2) US20040011235A1 (en)
EP (1) EP1342047B1 (en)
AU (2) AU2001228616B2 (en)
CA (1) CA2432050C (en)
DE (1) DE60026180T2 (en)
IL (2) IL156406A0 (en)
WO (1) WO2002048641A1 (en)

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Also Published As

Publication number Publication date
IL156406A (en) 2008-03-20
WO2002048641A1 (en) 2002-06-20
AU2861601A (en) 2002-06-24
DE60026180D1 (en) 2006-04-27
DE60026180T2 (en) 2006-11-16
CA2432050A1 (en) 2002-06-20
EP1342047B1 (en) 2006-02-22
IL156406A0 (en) 2004-01-04
US20040011235A1 (en) 2004-01-22
CA2432050C (en) 2009-06-23
US20070295236A1 (en) 2007-12-27
AU2001228616B2 (en) 2005-04-28

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