The effect of charge mixture ratio and particle size on igniter plume heat transfer characteristics

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:6859012

Evans, N A; Brezowski, C F

Investigation of the heat transfer characteristics of igniter output plumes, first reported at the Fourteenth International Pyrotechnics Seminar in 1989, has continued, using two types of igniter to determine the effect of charge mixture ratio and fuel particle size on performance. While both of these igniters had the same metallic closure disc (scored Hastelloy with a capture cone), the bridgewire sensitizer (or ignition mixture) was barium styphnate for one type, and a particular blend of fine particle titanium/potassium perchlorate ( PB'') for the other type. The output mixture for both types was titanium/potassium perchlorate; two mixture ratios (33/67 and 41/59), and two titanium particle sizes (2 and 8 {mu}m) were used. The results show that, for both types of igniter, the coarse particle size titanium produced the best performance. The overall best performance was obtained from the igniter using the PB'' ignition mixture and an output charge of 41/59 titanium/potassium perchlorate. 2 refs., 6 figs., 1 tab.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6859012
• Report Number(s): SAND-90-0230C; CONF-900792--3; ON: DE90010833
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450100 -- Military Technology
Weaponry
& National Defense-- Chemical Explosions & Explosives
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHLORINE COMPOUNDS
ELEMENTS
ENERGY TRANSFER
HALOGEN COMPOUNDS
HEAT TRANSFER
IGNITION
METALS
OXYGEN COMPOUNDS
PARTICLE SIZE
PERCHLORATES
PLUMES
POTASSIUM COMPOUNDS
POTASSIUM PERCHLORATES
SIZE
TITANIUM
TRANSITION ELEMENTS