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Calibration of a Kerr Cell System for High Voltage Pulse Measurements
This report addresses the calibration of kerr cell system for high voltage pulse measurements.
Date:
August 1, 1968
Creator:
Cassidy, Esther C. & Cones, H. N.
System:
The UNT Digital Library
Characterization of Snap-21 and Snap-23A Thermoelectric Materials
This report summarizes effort conducted to determine the thermoelectric characteristics of materials currently utilized in the SNAP-32A and SNAP-21 thermoelectric couples.
Date:
August 1, 1968
Creator:
unknown
System:
The UNT Digital Library
Development of a process to lower the thermal expansion of hot pressed niobium--graphite composites
Declassified 30 Aug 1973. Recent analysis of the NERVA hot end support system revealed that the high with-grain (WG) thermal expansion and the high creep deformation of NRX-A6 NERVA-type 75 wt% niobium carbide -- 25 wt% graphite hot pressed composite material may not be entirely satisfactory in future designs. Design requirements have shown the need for a better match between the normally high average coefficient of thermal expansion ( alpha ) of the composite material and the fueled graphite. A manufacturing engineering program was initiated to investigate methods for reducing the difference in the coefficient of thermal expansion (CTE) between the fuel and the carbide composite and, in addition, methods for reducing the creep rate. These objectives were targeted to be accomplished on 75--25 wt% composite material. It was demonstrated that the coefficient of thermal expansion can be r by about 50 percent of the difference between the coefficient for fueled graphite and that for the NRX-A6 type of composite material without compositional changes. In addition, by a slight modification of the carbide-- graphite ratio, the process should permit the matching of the CTE of fueled graphite and composite material. Improvements can be accomplished by a compressive heat treatment process …
Date:
August 1, 1968
Creator:
Blay, J.S. & Ellenburg, G.W.
System:
The UNT Digital Library
Fast and thermal neutron fluxes and gamma dose rates on the PAX dome and pressure vessel
None
Date:
August 1, 1968
Creator:
Rankin, W. D. & Kubancsek, G. E.
System:
The UNT Digital Library
Final test specification spot welded titanium bands test 15/W003 revision 1
None
Date:
August 1, 1968
Creator:
Burwell, D. L.
System:
The UNT Digital Library
Fueled graphite studies. Quarterly progress report, April--June 1968
None
Date:
August 1, 1968
Creator:
unknown
System:
The UNT Digital Library
Handbook of operating and maintenance instructions for XE-1 engine control system. Volume I
None
Date:
August 1, 1968
Creator:
unknown
System:
The UNT Digital Library
Light Gas Gun Calibration Report - August 1, 1968 - Project 507-1
None
Date:
August 1, 1968
Creator:
Carpenter, S. H. & Thompson, L. J.
System:
The UNT Digital Library
MAGNETIC FIELD DEPENDENCE OF THE THERMAL CONDUCTIVITY OF COBALT CHLORIDE THIOUREA
None
Date:
August 1, 1968
Creator:
NI, C. & Weinstock, H.
System:
The UNT Digital Library
Microautoradiographic characterization of ROVER bore coating interfaces
Declassified 28 Aug 1973. In an effort to understand the anomalous nonadherence of the NbC bore coatings on fueled ROVER elements, a modified microautoradiographic method was used to reveal the U distribution at the coating/ graphite interface. The method was used on elements manufactured with a reduced U content at the interface. Correlation between alpha tracks and the surrounding microstructure was excellent. Observations are consistent with the concept that uranium is responsible for an accelerated attack on the graphite during coating, although this is not explicitly proven. The presence of U in amounts below the detection limit of the method used is associated with tightly adherent NbC coatings. (auth)
Date:
August 1, 1968
Creator:
Bunnell, L.R.
System:
The UNT Digital Library
Monthly report of activities: August 1, 1968
None
Date:
August 1, 1968
Creator:
unknown
System:
The UNT Digital Library
Very high energy explosives systems
A discussion is given of where to go next in exploring HE systems with energy equal to LX-09, or better.
Date:
August 1, 1968
Creator:
Scribner, K.
System:
The UNT Digital Library