Category:Original articles

Takuo Kuwahara Abstract: Composite propellants contain binder as fuel which connects oxidizer particles and metals. The burning rate of a propellant is affected by the concentration and type of binder. Pyrolant is mixed with oxidizer particles and metal particles. Pyrolant does not contain binder, so burns smoothly. The burning rate of black powder (BP) which …
Continue reading Ignition And Burning Rate Characteristics Of Pyrolant Black Powder

Arno Hahma Abstract: Ignition and combustion properties of aluminium powder up to 250 kbar pressure were successfully determined. Hydrodynamic modelling combined with parametrized reaction profiles was used to match the experimental metal plate profiles to calculated values and the metal reactivity was determined from the parameters thus obtained. The reaction profiles over a wide range …
Continue reading Ignition and Combustion of Aluminium in High Explosives

Dimitrios N. Gkritzapis, EliasE. Panagiotopoulos, Dionissios P.Margarisb and Dimitrios G.Papanikas Abstract: A full six degrees of freedom (6-DOF) simulation flight dynamics model is applied for the accurate prediction of short and long range trajectories of high and low spin-stabilized projectiles and small bullets via atmospheric flight to final impact point. The projectile is assumed to …
Continue reading Atmospheric Flight Dynamic Simulation Modeling Of Spin-Stabilized Projectiles And Small Bullets With Constant Aerodynamic Coefficients

Dimitrios N. Gkritzapis, Elias E. Panagiotopoulos, Dionissios P. Margarisb and Dimitrios G. Papanikas Abstract: A full six degrees of freedom (6-DOF) simulation flight dynamics model is applied for the accurate prediction of short and long range trajectories of high and low spin-stabilized projectiles and small bullets via atmospheric flight to final impact point. The projectile …
Continue reading Atmospheric Flight Dynamic Simulation Modeling Of Spin-Stabilized Projectiles

Adam Harris and Daniel N. Sorensen Abstract: Safety constraints have traditionally presented researchers with challenges in testing the thermal conductivity of energetic powdered materials. Minimal volumes of energetic powders can now be tested with the modified transient plane source technique. The newly modified sensor design further reduces the possibility of impact, friction and electrostatic discharge (ESD) …
Continue reading Thermal Conductivity Testing of Minimal Volumes of Energetic Powders

Tom Smith and Avril di Palma Abstract: As part of CarnDu’s involvement with the UK firework display industry, a survey of UK professional firework display companies was carried out to identify areas of current concern and to attempt to identify trends. The results of this survey are presented here. Keywords: Survey, 2007, fireworks, UK Ref: …
Continue reading Survey of Firework Trends from UK Display Companies

R. Guilbeault and E. Contestabile   Abstract: Recoil from fireworks articles often arises as a concern in accident investigations or when fireworks are launched from unconventional locations such as rooftops, or other light building elements such as overhangs, from decks of small bridges or those of barges. In this latter case, the Authority Having Jurisdiction …
Continue reading Evaluation Of Multi-shot Firework Articles Using Mortar Recoil Measurements

Yuzo Ooki, Dayu Ding, Morimasa Higaki, and Tadao Yoshida Abstract: Burning and shot experiments have been carried out to examine the burning time and the trajectory of burning firework stars. The burning time in flight was longer than the stationary burning time. The trajectory of a burning star in the air was modeled assuming the …
Continue reading Exterior Ballistics of Firework Stars

Morimasa Higaki, Dayu Ding, Yuzo Ooki, and Tadao Yoshida Abstract: Burning experiments were carried out for stars and lifting charge in the air and in a closed vessel. Three types of stars were used, that is, ordinary spherical, half-restricted spherical and hemispherical surface-restricted stars were used as models for flying burning. Partly restricted stars gave …
Continue reading Burning Characteristics of Firework Stars and Lifting Charge

Kazuomi Itoh, Dayu Ding and Tadao Yoshida Abstract: The spectroscopic measurement of sparklers, torches and senko hanabi (Japanese sparklers) was  carried out. The three dimensional spectra of sparklers and torches showed that the peak intensities of the spectra fluctuate with time. In the burning of sparklers, white, titanium, senko and iron sparklers showed mainly the …
Continue reading Spectroscopic Measurement of Burning Toy Fireworks