EP0143084A2 - Leuchtmischung für Leuchtgranaten, die in Artilleriegeschosse eingesetzt werden - Google Patents

Leuchtmischung für Leuchtgranaten, die in Artilleriegeschosse eingesetzt werden Download PDF

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Publication number
EP0143084A2
EP0143084A2 EP84830255A EP84830255A EP0143084A2 EP 0143084 A2 EP0143084 A2 EP 0143084A2 EP 84830255 A EP84830255 A EP 84830255A EP 84830255 A EP84830255 A EP 84830255A EP 0143084 A2 EP0143084 A2 EP 0143084A2
Authority
EP
European Patent Office
Prior art keywords
illuminating
mixture
canister
blowing agent
canisters
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Withdrawn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
EP84830255A
Other languages
English (en)
French (fr)
Other versions
EP0143084A3 (de
Inventor
Eugenio Dr. Dall'orto
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.)
Simmel SpA
Original Assignee
Simmel SpA
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 Simmel SpA filed Critical Simmel SpA
Publication of EP0143084A2 publication Critical patent/EP0143084A2/de
Publication of EP0143084A3 publication Critical patent/EP0143084A3/de
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C15/00—Pyrophoric compositions; Flints
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
    • C06B23/009—Wetting agents, hydrophobing agents, dehydrating agents, antistatic additives, viscosity improvers, antiagglomerating agents, grinding agents and other additives for working up

Definitions

  • illuminating canisters to be inserted in artillery projectiles which, once the projecti le has been fired and has reached a predetermined point of its trajectory, are ejected by the use of a suitable explosive charge, which generally has also the purpose of igniting the illuminating mixture con tained in the canister. After the ejection from the projectile the canister descends suspended to a parachute so as to illuminate a surrounding area for a predetermined time depending on its dimensions and the combustion velocity of the illuminating mixture.
  • the prior art illuminating mixtures consist substantially of a metal powder acting as a combustible, an oxidizer acting as a supporter of combustion, and a binder. These mistures are charged in a suitable manner, f.e. by compression or pouring, in a container of a suitable shape and mechanical strength so as to form the so called illuminating canister.
  • the obstruction of the canister mouth reduces the emission surface whereby a decrease of the luminous intensity of the device occurs.
  • an increase of the pressure of the gases inside the canister takes place with a resultant increase of the combustion velocity and as a result a shorter illumination time and the risk that the canister explodes.
  • the ashes by depositing on the underlying mixture cover it so as to prevent its ignition whereby at the end of the combustion a lot of unburnt mixture remains in the canister.
  • the illuminating mixture according to the invention for illuminating canisters intended to be inserted in an artillery projectile is characterized in that it comprises an expander of the type of the blowing agents normally used in the technology of plastics.
  • the expander is simply added in the mixing step of the compounds intended to form the illuminating mixture.
  • Typical classes of compounds usable to this purpose are azo-derivatives such as azo-dicarbonamide or azodiisobutyronitrile (2:2'-azodi-2-methylpropionitrile); sulphonhydrazide-derivatives, such as benzen-m-di- sulphonhydrazide; N-nitroso-derivatives such as N, N' dimethyl-N, N'-dinitroso-terephthalirqide or N, N'-di- nitroso-pentamethylen-tetramine; or other compounds, such as tris-hydrazin-triazin or nitrourea.
  • azo-derivatives such as azo-dicarbonamide or azodiisobutyronitrile (2:2'-azodi-2-methylpropionitrile)
  • sulphonhydrazide-derivatives such as benzen-m-di- sulphonhydrazide
  • Figs. 1 and 2 of the accompanying drawings there are illustrated the graphs of the luminous intensity v. time of two equal compositions including magnesium powder, sodium nitrate and epoxy resin as a binder.
  • the composition is without expander, while in Fig. 2 3% weight of azo-dicarbonamide has been added. It is apparent the improvement obtained in the performance which is due to a substantial reduction in the quanity of ash accumulated in the canister.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP84830255A 1983-11-18 1984-09-17 Leuchtmischung für Leuchtgranaten, die in Artilleriegeschosse eingesetzt werden Withdrawn EP0143084A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT23768/83A IT1166989B (it) 1983-11-18 1983-11-18 Miscela illuminante per canister illuminanti destinati ad essere inseriti in proiettili d'artiglieria
IT2376883 1983-11-18

Publications (2)

Publication Number Publication Date
EP0143084A2 true EP0143084A2 (de) 1985-05-29
EP0143084A3 EP0143084A3 (de) 1985-07-03

Family

ID=11209813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84830255A Withdrawn EP0143084A3 (de) 1983-11-18 1984-09-17 Leuchtmischung für Leuchtgranaten, die in Artilleriegeschosse eingesetzt werden

Country Status (2)

Country Link
EP (1) EP0143084A3 (de)
IT (1) IT1166989B (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986907A (en) * 1975-03-07 1976-10-19 Thiokol Corporation Illuminating flare composition containing tetranitrocarbazole
FR2316204A1 (fr) * 1975-07-03 1977-01-28 Poudres & Explosifs Ste Nale Une composition pyrotechnique eclairante generatrice de gaz
FR2332966A1 (fr) * 1975-11-28 1977-06-24 Poudres & Explosifs Ste Nale Emploi d'agents porophores dans les poudres poreuses dites a simple base
GB1500679A (en) * 1964-09-18 1978-02-08 Dynamit Nobel Ag Hybrid rocket fuels

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1500679A (en) * 1964-09-18 1978-02-08 Dynamit Nobel Ag Hybrid rocket fuels
US3986907A (en) * 1975-03-07 1976-10-19 Thiokol Corporation Illuminating flare composition containing tetranitrocarbazole
FR2316204A1 (fr) * 1975-07-03 1977-01-28 Poudres & Explosifs Ste Nale Une composition pyrotechnique eclairante generatrice de gaz
FR2332966A1 (fr) * 1975-11-28 1977-06-24 Poudres & Explosifs Ste Nale Emploi d'agents porophores dans les poudres poreuses dites a simple base

Also Published As

Publication number Publication date
IT8323768A1 (it) 1985-05-18
EP0143084A3 (de) 1985-07-03
IT1166989B (it) 1987-05-06
IT8323768A0 (it) 1983-11-18

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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

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

17P Request for examination filed

Effective date: 19850907

17Q First examination report despatched

Effective date: 19860924

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: 19870205

RIN1 Information on inventor provided before grant (corrected)

Inventor name: DALL'ORTO, EUGENIO, DR.