Search results
Results from the WOW.Com Content Network
Delay compositions are used to introduce a delay into the firing train, e.g. to properly sequence firing of fireworks, to delay firing of ejection charges in e.g. model rockets, or to introduce a few seconds of time between triggering a hand grenade and its explosion. Typical delay times range between several milliseconds and several seconds.
1.4 Consumer Display Rocket. A rocket is a pyrotechnic firework made out of a paper tube packed with gunpowder that is propelled into the air. Types of rockets include the skyrockets, which have a stick to provide stability during airborne flight; missiles, which instead rotate for stability or are shot out of a tube; and bottle rockets, smaller fireworks – 1½ in (3.8 cm) long, though the ...
NFPA 1123, subtitled Code for Fireworks Display, is a code created in the United States by the National Fire Protection Association (NFPA) to help prevent damage of property and injury or death of individuals during outdoor firework displays.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Barium chromate – used in delay compositions, e.g. in fireworks rockets Lead chromate – used in delay compositions Potassium dichromate – used infrequently as an oxidizer; can be used as a surface treatment for passivation of magnesium particles, also as a catalyst and in some matches; potassium perchlorate often added
The ejection charge is ignited through a layer of delay composition, to fire shortly after the main engine burns out. Ejection charges can be also triggered by a timer or an altimeter. A small amount of black powder is usually used, but smokeless powder and other compositions are possible. Ejection charge is granular black powder.
The Indianapolis Colts had to win on Sunday. Not just for the obvious ramifications of this season. But because losing brought up the old questions with their quarterback they've been trying to ...
A key ingredient in rocket fuel can be found in a wide array of foods we eat, especially baby food, fast food and fresh fruits and vegetables, according to an explosive new investigation from ...