Air howler
Air howler (also Pfeifer , air Pfeifer , Whistle are called) closed on one side of paper or plastic sleeves, in which a third of a pyrotechnic set is pressed. This usually consists of potassium perchlorate and sodium or potassium salts of benzoic or salicylic acid .
The whistling sound is produced by burning the compound and the gas column in the case being set in vibration. After the fuse has burned down and the whistle has started, the case must be thrown vertically into the air.
Due to their uncontrolled trajectory, aerial howlers were no longer approved by BAM in Germany on December 31, 2006, but remaining stocks could still be sold until December 31, 2007. Meanwhile in Germany in category F2 “pyrotechnic objects with whistling as individual objects” are expressly only legal for bill holders according to § 20 I sentence 1 of the Explosives Act. In fireworks batteries , however, effects continue to be used that are basically nothing more than air howls .
Individual evidence
- ↑ Fireworks Media - Howler .
- ^ Römpp Lexikon Chemie Version 2.0, Georg Thieme Verlag.
- ↑ Appendix 1 of the 1st Explosive Ordnance, Section 20 IV