Pyrotechnic Gas Generator
Rapid & Reliable.
A solid propellant pyrotechnic gas generator is essentially an airbag inflator without a bag. The gas generated is discharged directly into ambience or purposefully contained for efficient use. Typically, a pyrotechnic gas generator consists of a solid propellant, which, upon ignition, rapidly reacts to generate gas-phase combustion products and particulates, an igniter to initiate the combustion of the propellant, a filter system to prevent or minimize or contain particulates from the combustive reaction, a heat transfer mechanism to cool the high temperature combustion gas and an exhaust mechanism to disperse the gas efficiently.
Our gas generators are a gas-producing pyrotechnic device – initiated by electro-explosive or mechanical percussion devices and Explosive Transfer Lines (ETLs).
How Pyrotechnic Gas Generators Work
Gas Generators use pyrotechnic mixtures to produce hot gas for a multitude of applications. They can be mechanically, electrically or laser initiated. Upon receipt of an input stimulus, the propellant in the gas generator will ignite, emitting heat, hot particles and/or gas at a controlled rate to provide the necessary input to the next level assembly. PacSci EMC can tailor a design by incorporating propellant grains of various geometries and associative hardware features to meet needed pressure vs. time gas delivery requirements.
Gas generators utilize a solid propellant grain and are capable of delivering a gas output at a predetermined and precisely controlled rate. These devices may be designed to produce gas at an increasing or decreasing rate through the use of selective burning grains. Typical gas generator applications include the pressurization of hydraulic power systems, inflation, injection of electrolyte into dry charge batter systems and the expulsion of fluid from closed systems.
In addition to being used in tactical missiles, gas turbine engines, launch vehicles, aircraft egress systems, they may also be used to provide actuation pressure to control the rate of mechanical movement in mechanical actuation systems, such as ordnance dispensing systems.
4.5 amps for 10 milliseconds minimum
1.0 amp / 1.0 watt for 5 minutes maximum
- Operating Temperature
-54°C to +71°C
- Burn Time
With the application of the All-Fire current, Generators are tailored to produce gas delivery at application specific pressure / time requirements.
- Function Time
With the application of the All-Fire current, Generators will begin to generate hot gas within 50 milliseconds.
- Applicable Specifications
Gas Generator geometric interface features and performance can be customized to fit many customer envelopes/applications.
Questions to Consider
- Application – what are you trying to accomplish?
- What are your pressure profile requirements?
- Redundancy requirements?
- Input power requirements – electrical, ETL, mechanical?
- Environmental requirements?
- Qualification requirements?
- Military or other requirements?
What is pyrotechnic gas?
A pyrotechnic gas generator consists of a solid propellant, which, upon ignition, rapidly reacts to generate gas-phase combustion products and particulates.