Search results
Results from the WOW.Com Content Network
There are several advantages of pyrotechnic valves over other types of valves, such as solenoid valves: Pyrotechnic valves have an extremely fast response time (time from the actuation signal reaching the device til the valve has closed/opened), often in the order of a few milliseconds. [1] Normally-closed pyro valves have a far lower leak rate ...
A typical startup procedure begins with opening a valve, often a one-shot pyrotechnic device, to allow the pressurizing gas to flow through check valves into the propellant tanks. Then the propellant valves in the engine itself are opened. If the fuel and oxidizer are hypergolic, they burn on contact; non-hypergolic fuels require an igniter ...
Pages in category "Pyrotechnics" ... Pyrotechnic valves; Pyrotechnician; Pyrotechnics Guild International; R. Rhythm and Booms; Rocket engine nozzle; Rocket propellant;
Pages in category "Valves" The following 71 pages are in this category, out of 71 total. ... Pyrotechnic valves; R. Reed valve; Relay valve; Reversing valve; Rotary ...
Pyrotechnic gerbs used in the entertainment industry Pyrotechnics is the science and craft of creating such things as fireworks , safety matches , oxygen candles, explosive bolts and other fasteners , parts of automotive airbags , as well as gas-pressure blasting in mining, quarrying, and demolition.
Pyrotechnic initiators are often controlled electrically (called electro-pyrotechnic initiators), e.g. using a heated bridgewire or a bridge resistor. They are somewhat similar to blasting caps or other detonators, but they differ in that there is no intention to produce a shock wave. An example of such pyrotechnic initiator is an electric match.
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!
A ball mill is a type of grinder filled with grinding balls, used to grind or blend materials for use in mineral dressing processes, paints, pyrotechnics, ceramics, and selective laser sintering. It works on the principle of impact and attrition: size reduction is done by impact as the balls drop from near the top of the shell.