Electrolytic pretreatment unit gaseous effluent conditioning

The electrolytic pretreatment of urine is an advanced process that eliminates the need for handling and storing the highly corrosive chemicals that are normally used in water reclamation systems. The electrolytic pretreatment process also converts the organic materials in urine to gases (N2 and O2) that can be used to replenish those lost to space by leakage, venting, and air lock operations. The electrolytic process is more than a pretreatment, since it decreases the urine solids content by approximately one third, thus reducing the load and eventual solids storage requirements of the urine processing system. The evolved gases from the pretreatment step cannot, however, be returned directly to the atmosphere of a spacecraft without first removing several impurities including hydrogen, chlorine, and certain organic compounds. A treatment concept was developed that would decrease the impurities in the gas stream that emanates from an electrolysis unit to levels sufficiently low to allow the conditioned gas stream to be safely discharged to a spacecraft atmosphere. Two methods were experimentally demonstrated that can accomplish the desired cleanup. The bases of the two methods are, repectively: (1) raw urine scrubbing and (2) silica gel sorption

Validation and Simulation of ARES I Scale Model Acoustic Test -1- Pathfinder Development

The Ares I Scale Model Acoustics Test (ASMAT) is a series of live-fire tests of scaled rocket motors meant to simulate the conditions of the Ares I launch configuration. These tests have provided a well documented set of high fidelity measurements useful for validation including data taken over a range of test conditions and containing phenomena like Ignition Over-Pressure and water suppression of acoustics. To take advantage of this data, a digital representation of the ASMAT test setup has been constructed and test firings of the motor have been simulated using the Loci/CHEM computational fluid dynamics software. Within this first of a series of papers, results from ASMAT simulations with the rocket in a held down configuration and without water suppression have then been compared to acoustic data collected from similar live-fire tests to assess the accuracy of the simulations. Detailed evaluations of the mesh features, mesh length scales relative to acoustic signals, Courant-Friedrichs-Lewy numbers, and spatial residual sources have been performed to support this assessment. Results of acoustic comparisons have shown good correlation with the amplitude and temporal shape of pressure features and reasonable spectral accuracy up to approximately 1000 Hz. Major plume and acoustic features have been well captured including the plume shock structure, the igniter pulse transient, and the ignition overpressure. Finally, acoustic propagation patterns illustrated a previously unconsidered issue of tower placement inline with the high intensity overpressure propagation path

Water system microbial check valve development

Development work on a device for the Space Shuttle that will prevent the transfer of viable microorganisms within water systems is described. The device serves as a check valve in that it prevents the transfer or cross-contamination of microorganisms from a nonpotable system into a potable water system when these systems are interconnected. In this regard, the function of the device is similar to that of the air gap found in conventional one gravity systems. The device is essentially a bed of resin material impregnated with iodine. Basic design data for a variety of flow and temperature conditions are presented, together with results of challenging the beds with suspensions of seven microorganisms including aerobes, anaerobes, and spore formers

The Impact of Preferred Conflict Management Tactics on Performance Within a Virtual Leadership Simulation

The pace of technological advancements available to adult educators is progressing faster than the research examining the efficacy of these tools. This study helps address this challenge by examining a disruptive technology, namely a virtual leadership simulation, and factors that impact adult learner performance within a specific virtual leadership simulation

Elections—Right of Town Board to Fill Vacancy

Furk v. Board of Supervisors of County of Sullivan, 1 N. Y. 2d 128, 134 N. E. 2d 104 (1956)

Decedent\u27s Estates—Discovery Proceedings

In re Trevor\u27s Estate, 309 N. Y. 389, 131 N.E. 2d 561 (1955)

Real Property—Licensee

People v. Horowitz, 309 N. Y. 426, 131 N.E. 2d 715 (1956)

Labor Law: Constitutionality of Section 301 (a) of Taft-Hartley Act

Ass\u27n of Westinghouse S. Emp. v. Westinghouse E. Corp, 348 U. S. 437 (1955)

Advertisement, G. P. Putnam\u27s Sons

Pamphlet: G.P. Putnam\u27s Sons Publishers and Booksellers advertisement for Putnam;s Minute-A-Day English For Busy People. No date given