Barry Sturman ABSTRACT: Twelve English-language books on pyrotechnics were surveyed for the authors’ views on the nature of the metal monochlorides that are associated with the emission of colored light in pyrotechnic flames. Three of the ten authors stated that the emitters were metal chloride ions (MCl+), five that they were neutral metal chloride molecules (MCl), …
Continue reading Metal Monochloride Emitters in Pyrotechnic Flames — Ions or Neutrals?
Author:admin
Review of: Pyrotechnic Chemistry
Pyrotechnic Chemistry Reviewed by Tony Cardell Having spent more than 42 very enjoyable years working with energetic materials, particularly in the areas of military pyrotechnics and fireworks, I know the frustration faced by so many workers, both new and experienced, with the almost impossible task of finding useful reference books on these very specialized subjects. …
Continue reading Review of: Pyrotechnic Chemistry
Review of: Pyrotechnic Chemistry
Pyrotechnic Chemistry, Journal of Pyrotechnics Reviewed by Bernard E. Douda Pyrotechnic Chemistry is the fourth in the Pyrotechnic Reference Series produced by the publisher of the Journal of Pyrotechnics. It is composed of nineteen stand-alone presentations each authored by pyrotechnic experts in their specialty area. There are chapters dealing with pyrotechnic materials, thermodynamics, ignition and …
Continue reading Review of: Pyrotechnic Chemistry
Review of: Pyrotechnic Chemistry
Pyrotechnic Chemistry Reviewed by John R. Steinberg, M. D. This is a collaborative work by many authors, resulting in many distinct writing styles between the various chapters; nevertheless the book provides a superb overview of the chemistry of pyrotechnics and various tangentially related topics. Given the stellar curricula vitae of the contributors, it is no …
Continue reading Review of: Pyrotechnic Chemistry
A Review of: Color, An Introduction to Practice and Principles – Rolf G Kuehni
Color, An Introduction to Practice and Principles – Rolf G Kuehni Reviewed by K. L. Kosanke Rolf G. Kuehni’s book Color, an Introduction to Practice and Principles (published by Wiley-Interscience) is for the most part a delightful little book (199 pages in 12 chapters, approximately 6 by 9 inches, price $89.95) on the subject of …
Continue reading A Review of: Color, An Introduction to Practice and Principles – Rolf G Kuehni
Review of: The Chemistry of Explosives – Jacqueline Akhavan
The Chemistry of Explosives – Jacqueline Akhavan Reviewed by F. J. Feher Authors of introductory-level books in technical fields face a formidable challenge: they must strike an appropriate compromise between the needs of relatively uninformed students and the expectations of experts in the field. For subject matter as broad and complex as chemistry or explosives, …
Continue reading Review of: The Chemistry of Explosives – Jacqueline Akhavan
Note on “Metal Monochloride Emitters in Pyrotechnic Flames – Ions or Neutrals?”
Barry Sturman As pointed out in the subject paper several writers have erroneously attributed the molecular band spectra that produce the characteristic colours of flames containing various metals M, (M = Ca, Sr, Ba or Cu) and Cl to the singlycharged ions MCl+. Ref: JPyro, Issue 21, 2005, pp71-72 (J21_71)
Spectral Study of Metallic Molecular Bands in Hybrid Rocket Plumes
K. L. Maxwell and M. K. Hudson ABSTRACT: A labscale hybrid rocket was used to study spectral bands produced by metal combustion. Bands in the ultraviolet-visible region (300–750 nm) are of interest. The rubber-like fuel, hydroxyl-terminated polybutadiene (HTPB), was doped with a metallic salt for introduction into the plume during combustion. When introduced, the metals …
Continue reading Spectral Study of Metallic Molecular Bands in Hybrid Rocket Plumes
Impact Sensitiveness Analysis of Pyrotechnic Flash Compositions
S. P. Sivapirakasam, M. Surianarayanan, P. Nagaraj,1 G. S. Venkataratnam ABSTRACT: Impact sensitiveness of pyrotechnic flash compositions consisting of mixtures of potassium nitrate (KNO3), sulphur (S) and aluminium (Al) is experimentally analyzed using equipment similar to BAM (fall hammer) equipment. Results indicate that an increase in the sulphur content of the mixture raises its sensitivity …
Continue reading Impact Sensitiveness Analysis of Pyrotechnic Flash Compositions
Choked Flow, a Frequently Misunderstood Term
Lawrence Weinman ABSTRACT: A brief description of compressible fluid flow is presented to clarify and, hopefully, reduce the incorrect usage of the term “choked flow” in the fireworks community. Keywords: choked flow, fluid flow, gas velocity, mass flow, rocket, sonic flow Ref: JPyro, Issue 21, 2005, pp31-38 (J21_31)