ShellCalc© Version 5

We have developed a new version of ShellCalc© with some new features
  • Ability to set launch height below ground level (useful for firing in valleys)
  • Ability to set shell burst diameter to override ShellCalc© defaults
  • ** NEW in v5.16 ** Ability to set “Standard” Shell Burst Height
  • Shells now explicitly include Bombettes (for single shot devices)
  • Optional calculation and display of “normal” debris paths and distances – eg shell case fragments
  • Optional calculation and display of “long burning” debris paths and distances – eg Kamuro stars
  • Rationalised data input screens
  • Large scale data plots – for printing or screen grab/insertion into reports etc
  • Help TAB
  • TAB including windspeed conversion table

We have also changed the program somewhat

  • We have removed the Imperial/Metric option (temporarily) as most users do not use it
  • Removal of macros – to print use normal Excel functions
  • Consequent removal of buttons – change tabs using normal Excel features

The changes and models behind them will be documented in a paper shortly.

The next major version of ShellCalc© (version 6) is planned to contain the following features.  We’d be happy to hear your views on these.  It is also likely that the next version will be a charged for download – we will always keep the previous version free for download.

  • Incorporation of Standardised parameters from European Standard of Cat 4 fireworks.  Eg the ability to enter Standard Shell Burst Height and allow this to override ShellCalc© default calculations
  • User entered data for Mortar Parameters (to calculate effect on burst height etc)
  • Calculations for Aqua Shells
  • Calculations for Mines
  • Further development of “normal” and “long burning” fallout models
  • Further development of data entry and output screens

Changelog for V5 (please note downloading the file will download the latest version)

v5.1.4 – original version
v5.1.5 – minor bug fixes
v5.1.6 – ability to set “Standard” Shell Burst Height
v5.17 – fixed scale graphs for export purposes
v 5.18 – Corrected bug for large size shell burst height 
v5.23 – Updated fallout infromation etc  (see also http://www.jpyro.co.uk/?p=1585)

Very occasionally users have reported that the xlsx file is downloaded with a zip extension.  If this happens just rename the file extension to xlsx and all should be fine!  If you still experience problems opening the file ensure that you have a recent (post 2007) version of Excel installed – or download the Microsoft compatibility pack here.

Download Shellcalc 5.23

Book Review Firework Displays: Explosive Entertainment

By: Dr. Tom Smith

Published by: Chemical Publishing Company – www.chemical-publishing.com
ISBN: 978-0-8206-0064-2 (B&W Hardcover)
ISBN: 978-0-8206-0064-1 (Color Hardcover)
ISBN: 978-0-8206-0064-8 (eBook)

More information please click here

This book gives a very comprehensive overview of the world of fireworks. It comprises – amongst others – information on historical developments of firework displays, introduces the large variety of(sub-) types and categories, identifies possible hazards to be considered during the planning offirework displays and gives recommendations in case of accidents/incidents.

Especially the description of the probabilistic approach of assessing risks (based on hazards in combination with frequencies) highlights a promising alternative in a field that seems currently be dominated by simple deterministic methods in many countries. Moreover, the book provides information on latest legislationas well as standardisation aspects and gives guidance on the fireworks event planning not only to the users (with or without specialist knowledge) but also to the enforcers, who are dealing with the assessments of professional firework displays prior to the permission of these.

It should therefore be considered, to include this book in respective national training courses, which form the basis of licensing systems with regard to the training of “persons with specialist knowledge” in Europe. Taking this into account, it is recommended to translate this book to other languages in order to allow a broader community to share the information provided in this book.

Reviewed by Dr. Christian Lohrer

Pricing and Order form

We are in the process of changing  the pricing of the journal from US dollars to sterling (GB pounds).  We hope this does not inconvience you to much. For rates and order form please click here

Training in Explosives Technology


This course covers the physics of explosives technology (chemistry, burning, shock & detonation, initiation and initiators, scaling in design and analysis) and an appreciation of various laws, statutes, codes and common practices regarding explosives safety, transportation and storage.

The course runs from March 28 – April 1, 2011

Location : Carmel, CA 

For more information please contact:

Jonas A. Zukas

Computational Mechanics Associates
P. O. box 11314
Baltimore, MD

Telephone     : 410-532-3260

email     : compmechanics@verizon.net

Pyrotechnic Chemistry Course

This course will run again in the UK on 28/29/30 March 2011

for more information click here