Generation of long time creep data of refractory alloys at elevated temperatures Eleventh quarterly report, 26 Dec. 1965 - 26 Mar. 1966

Creep tests of arc-cast and vapor deposited tungsten, molybdenum alloys, niobium, and tantalum base alloys for use in advanced power system

Generation of long time creep data on refractory alloys at elevated temperatures eighth quarterly report

Creep resistance of refractory alloys at elevated temperatures under ultrahigh vacuum condition

Closed-loop Dynamics of In-core Thermionic Reactor Systems

Using a point model of an in-core thermionic converter, alternative schemes for providing closed loop reactor control were investigated. It was found that schemes based on variable gain power regulation buffers which use the reactor current as the control variable provide complete protection from thermionic burnout and also provide a virtually constant voltage to the user. A side benefit is that the emitter temperature transients are small-even for a complete electric load drop the emitter temperature transient is less than 100 deg K. The current regulation scheme was selected for further study with a distributed parameter model which was developed to account for variations in thermionic and heat transfer properties along the length of a cylindrical converter. It was found that even though the emitter temperature distribution is about 200 deg K along the converter length, the dynamic properties are unchanged when using the current control scheme

Generation of long time creep data on refractory alloys at elevated temperatures Twelfth quarterly report, 26 Mar. - 26 Jun. 1966

Long time creep data on refractory alloys at high temperature

Generation of long time creep data on refractory alloys at elevated temperatures Quarterly report, 26 Oct. - 26 Dec. 1966

Long-time creep data on refractory metal alloys for advanced space power system

Generation of long time creep data of refractory alloys at elevated temperatures

Creep test data on refractory metal alloys for use in spacecraft power supply system

Mechanical behavior of tantalum-base T-111 alloy at elevated temperature

Mechanical behavior of tantalum T-111 alloy at high temperatures and ultrahigh vacuu