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Month:January 2009
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Sound Level Analysis of Firecrackers
Jeya Rajendran and T. L.Thanulingam Abstract: The noise levels from sound-producing firecrackers, both commercial and newly formulated, were measured. Commercial sound-producing firecrackers produce noise in the range of 130.7 dB(AI)/150.4 dB(C) peak to 142.8 dB(AI)/162.6 dB(C) peak at a distance of 4 m. A set of pyrotechnic compositions of potassium nitrate (KNO3), sulphur (S), aluminium (Al) and boric acid (H3BO3) …
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NARAM 2009
August 8-14 2009, Johnstown, PA Contact: web: http://www.psc473.org/naram51/ For other launch information visit the NARWeb site: http://www.nar.org
LDRS 2009
New York – July 2-6 2009 Contact: see web site web: http://www.rocketryplanet.com/content/view/2575/28/
5th EFEE World Conference
April 26-28 2009, Budapest Contact Roger Holmberg email: info@efee.eu web: www.efee.eu
PGI Convention
August 8 – 14, 2009, Mason City, Iowa Contact: Robin Cleveland, Membership Manager Phone: +1 920-558-4681 email: membership@pgi.org web: http://www.pgi.org
36th International Pyrotechnics Seminar
Event: 36th IPS Seminar Date: August 23rd until 28th., 2009 Venue: Rotterdam, NL website: www.ips2009.nl