Pyrotechnic Composition


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Pyrotechnic Composition

 

a mixture used in pyrotechnic aerial bombs, missiles, and rockets. The basis of pyrotechnic compositions is a two-part mixture: (1) a powder from a metal having a high combustion heat, for example, magnesium or aluminum or their alloys, and (2) an oxidant, such as NaNO3 or Ba(NO3)2. Pyrotechnic compositions that contain 60–70 percent magnesium are known.

The luminous intensity of pyrotechnic compositions depends on the diameter of the flame and on the temperature and burning rate of the composition and is equal to 104—107 candelas; the duration of burning is from 8 sec to 8 min. Pyrotechnic compositions have formulas that are similar to the formulas of mixtures used for photoflash bombs in night aerial photography. The luminous intensity of photoflash bombs is approximately 108–109 candelas and the illumination lasts for up to 0.1 sec.

References in periodicals archive ?
The MK 25 is an ammunition item which contains a mixture of red phosphorous pyrotechnic composition and other combustible materials that burn in excess of 1,000[degrees].
This SEM / EDS methodology greatly aids in the identification of the general type of pyrotechnic composition involved.
The hot flash from the end of the shock tube then ignites the pyrotechnic composition in the delay element.
The CPSC has banned firecrackers with >50 mg pyrotechnic composition (including cherry bombs, M-80s, and silver salutes) designed to detonate on or near the ground and reloadable shell devices with diameters exceeding 1.
Certainly a number of his other works, such as Expulsion from the Garden of Eden, may, in their pyrotechnic composition and color, suggest that they are indeed Romantic.
State Fire Marshal Kate Dargan will discuss recently enacted legislation (SB 839) which: increased the financial penalties for possession of illegal fireworks; authorized additional state arson and bomb investigators to tackle the problem; changed the method of determining whether an individual is in possession of a felony level of illegal fireworks from the amount of pyrotechnic composition to the gross weight of product; and established a requirement that, in addition to any fines and/or jail time, all violators will have to reimburse the State of California for the costs of transportation and disposal of those illegal fireworks.
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Tenders are invited for Magnesium Powder For Explosive & Pyrotechnic Composition Griitospecn- Is:2307-2004 (2nd Rev) With Apparent Density Min.
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Tenders are invited for Tenders Are Invited For The Stores: Potassium Nitrate Grade - 2 For Explosive And Pyrotechnic Composition To Specn: Is-301-1982( 2Nd Rev)(Reaffirmed 2003)Dc No 3810-Me Dt 5/5/04 Amendment No.