Application of a copper-vapor laser to high-speed, high-resolution, front-lit, cinephotography of solid propellant deflagration

1985 ◽  
Author(s):  
R. BECKER
Keyword(s):  
High Resolution ◽  
Solid Propellant ◽  
High Speed ◽  
Copper Vapor Laser ◽  
Vapor Laser ◽  
Copper Vapor

High-Speed Photography of Energetic Materials and Components with a Copper Vapor Laser

1988 ◽  
Vol 117 ◽  
Author(s):  
Larry R. Dosser ◽  
John W. Reed ◽  
Margaret A. Stark
Keyword(s):  
Energetic Materials ◽  
High Speed ◽  
Energetic Material ◽  
Copper Vapor Laser ◽  
High Speed Photography ◽  
Ignition Energy ◽  
Vapor Laser ◽  
Copper Vapor ◽  
Burn Rate ◽  
Pyrotechnic Reactions

AbstractThe evaluation of the properties of energetic materials, such as burn rate and ignition energy, is of primary importance in understanding their reactions and the functioning of devices containing them. One method for recording such information is high-speed photography at rates of up to 20,000 images per second. When a copper vapor laser is synchronized with the camera, laser-illuminated images can be recorded that detail the performance of a material and/or component in a manner never before possible. The laser can also be used for ignition of the energetic material, thus eliminating the need for bridgewires or electric squibs that can interfere with photography. Details of such ignitions are readily observable, and the burn rate of a material can be determined directly from the film. There are indications that information useful for the modeling of pyrotechnic reactions will become available as well. Recent results from high-speed photography of several pyrotechnic materials and devices will be presented.

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