FLAME HEATED THERMIONIC CONVERTER RESEARCH.
Quarterly rept. no. 7, 1 Jan-31 Mar 63,
ATOMICS INTERNATIONAL CANOGA PARK CA
Pagination or Media Count:
HEAT SOURCE DEVELOPMENT After testing a large number of fuel injection burners, we were able to develop a burner with even heating and com plete mixing and burning in the limited space available for combustion. This burner depends upon a converging cortex flow to effect the mixing and burning. MATERIALS DEVELOPMENT AND EVALUATION Testing of incandescent wires con tinued as a screening process for promising coatings. A coating known as Modified T-61 applied to 116-in.-diamter molybdenum wire from Fansteel survived 887 hr at 1350 C. A hot shell was made from a deep drawn molybdenum thimble -ted with Durak-B molybdenum disilicide coat ing. In addition, the coating was protected from the combustion chamber by a thick layer of sili con carbide cemented to the Durak-B with silicon carbide cement. This hot shell test was con ducted for 137 hr at 1300 C emitter temperature before a leak developed. Up until the time of failure, the maximum leak rate was observed to be 0.01 std cubic cmhr. Author