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 search also uncovered "a suspected homemade 'banger'", containing potassium nitrate, a tub containing 50g of aluminium powder, a 68g mixture of potassium nitrate, sulphur and "aluminium based low explosive pyrotechnic composition".
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 1.75 inches; bottle-rockets can contain up to 130 mg pyrotechnic composition.
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.
The cause of the recall is the gas generator of the airbag, which contains a pyro cartridge with pyrotechnic composition, which lost its properties due to a long stay in conditions of high humidity, high temperature and / or temperature drop.
Tenders are invited for Magnesium Powder For Explosive & Pyrotechnic Composition Griiitospecn-Is:2307-2004 (2Nd Rev) With Apparent Density Min.0.65Max0.85G/Ml Sieve Size Given Below(1)0.5% (Max) To Be Retainedon 500 Micrometer Sieve (2) 15.0% (Max) To Be Retained On 355Micrometer Sieve(3) 85.0% (Min) To Be Retained On 150Micrometer Sieve (4) 99.0% (Min) To Be Retained On 125Micrometer Sieve.
Tenders are invited for Potassium Nitrate Grade-I 125 Micron Is Sieve For Explosive Pyrotechnic Composition To Specn.
Tenders are invited for Magnesium Powder For Explosive & Pyrotechnic Composition Griitospecn- Is:2307-2004 (2nd Rev) With Apparent Density Min.
Tenders are invited for 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 Size : 250 Micrometer Ls.Sieve.
Tenders are invited for Magnesium Powder Grade-B Medium Density (0.65 To 0.85g/M|) For Explosive And Pyrotechnic Composition To Specn.