COLD-SAT: A technology satellite for cryogenic experimentation

NASA-Lewis (LeRC) is involved in the development and validation of analytical models which describe the fluid dynamic and thermodynamic processes associated with the storage, acquisition and transfer of subcritical cryogenic fluids in low gravity. Four concurrent studies, including one in-house at LeRC, are underway to determine the feasibility of performing model validation experiments aboard a free-flying spacecraft (S/C) called Cryogenic On-Orbit Liquid Depot-Storage, Acquisition and Transfer (COLD-SAT), using liquid hydrogen as the cryogen. The technology requirements for the experiments are described along with the initial LeRC concepts for the S/C and an experiment subsystem comprising of cryogenic tankage (a supply dewar and three receiver tanks), gas pressurization bottles (both helium and autogenous hydrogen), their associated plumbing, and instrumentation for data collection. Experiments were categorized into enabling/high priority Class 1 technologies and component/system Class 2 demonstrations. As initially envisioned by LeRC, COLD-SAT would have had a 1997 launch aboard a Delta-2 for a 6 month active lifetime in a 925 km orbit with a pseudo-inertial attitude

Lithium and potassium heat pipes for thermionic converters

A prototypic heat pipe system for an out-of-core thermionic reactor was built and tested. The emitter of the concentric thermionic converter consists of the condenser of a tungsten heat pipe utilizing a lithium working fluid. The evaporator section of the emitter heat pipe is radiation heated to simulate the thermal input from the nuclear reactor. The emitter heat pipe thermal transport is matched to the thermionic converter input requirement. The collector heat pipe of niobium, 1% zirconium alloy uses potassium as the working fluid. The thermionic collector is coupled to the heat pipe by a tapered conical joint designed to minimize the temperature drop. The collector heat flux matches the design requirements of the thermionic converter

The Effect of Violation of the Rule Against Perpetuities in Missouri

It will suffice to observe at this point that there is a wide disposition among lawyers to conclude that in Missoui a limitation void for remoteness contaminates and renders void the entire property disposition of which the void limitation is part. That view is shared by that eminent authority on Missouri real property law, Mr. McCune Gill. It has undoubted pragmatic force because it is the governing principle for title examiners, under whose -scrutiny fall property dispositions far more numerous than those which come before the courts. Froni an equitable standpoint, there is little to commend such a concept of total invalidity

Firm Performance as a Function of Entrepreneurial Orientation and Strategic Planning Practices

New business creation is essential for our nation\u27s economy and accounts for all net new job creation. However, 56 of small businesses fail within four years of startup. One way to address this issue is to employ an approach combining an entrepreneurial orientation (EO) with key strategic management planning practices for firms seeking to gain a competitive advantage and improve firm performance. Entrepreneurial orientation is the propensity of firms to be innovative, proactive, and be willing to take risks. This research project empirically investigated the relationship among a firm\u27s scanning intensity, locus of planning, planning flexibility and entrepreneurial orientation and firm performance. The sample for this research involved the owners and principal managers of Northeastern Ohio small businesses. Results indicate that a firm\u27s entrepreneurial orientation is positively related to firm performance. However, the positive relationship between strategic planning processes and firm performance was not supported. Environmental uncertainty was shown to have an effect on the relationship between entrepreneurial orientation and performanc

The Rule Against Perpetuities in Missouri, 1952-1983

A little more than thirty years ago, I wrote for this Quarterly an article in which I discussed the effect in Missouri of a limitation void for remoteness upon other limitations contained in the same deed or will which, of themselves, were not remote. This Article is not intended to cover the same ground as the earlier article, though occasional references to it may be necessary to gain perspective. The focus at the present time is upon the happenings touching upon the rule against perpetuities since 1952. This focus requires a widening of scope beyond examination of questions concerning the effect of violation of the rule. It also dictates a narrowing of the period being examined which will undoubtedly entail omission of discussion of some important principles which were not dealt with by the cases during the period