Demonstration of the range over which the Langley Research Center digital computer charring ablation program (CHAP) can be used with confidence: Comparisons of CHAP predictions and test data for three ablation materials

Comparisons of ablation calculations with the charring ablation computer code and ablation test data are presented over a wide range of environmental conditions in air for three materials: low-density nylon phenolic, Avcoat 5026-39HC/G, and a filled silicon elastomer. Heat fluxes considered range from over 500 Btu/sq ft-sec to less than 50 Btu/sq ft-sec. Pressures range from 0.5 atm to .004 atm. Enthalpies range from about 2000 Btu/lb to 18000 Btu/lb. Predictions of recession, pyrolysis penetration, and thermocouple responses are considered. Recession predictions for nylon phenolic are good as steady state is approached, but strongly transient cases are underpredicted. Pyrolysis penetrations and thermocouple responses are very well predicted. Recession amounts for Avcoat and silicone elastomer are less well predicted, although high heat flux cases near steady state are fairly satisfactory. Pyrolysis penetrations and thermocouple responses are very well predicted

Transfer molding of PMR-15 polyimide resin

Transfer molding is an economically viable method of producing small shapes of PMR-15 polyimide. It is shown that with regard to flexural, compressive, and tribological properties transfer-molded PMR-15 polyimide is essentially equivalent to PMR-15 polyimide produced by the more common method of compression molding. Minor variations in anisotropy are predictable effects of molding design and secondary finishing operations

Emergency Protocol Program for High School Athletes

This evidence-based project (EBP) involved development and implementation of an emergency protocol (EP) education program for high school athletes and coaches at a southern California high school. A Doctor of Nursing Practice student, collaborating with health care and athletic personnel, conducted an assessment of the high school’s EPs for management of asthma, anaphylaxis, diabetes, and heat illness. Then, an EP and educational program were created; coaches and athletes were educated on the protocol during a coaches’ meeting and practice times, respectively. All participants completed pre- and post-tests, and mean knowledge scores were compared. The overall knowledge score increased by 10% for coaches and 5% for athletes. High school athletes’ and coaches’ knowledge regarding anaphylaxis increased the most. Although sports emergency data were examined, no emergencies related to the selected conditions occurred during the project period. Anaphylaxis should be an important focus of education for high school athletes and coaches

Analytical modeling of intumescent coating thermal protection system in a JP-5 fuel fire environment

The thermochemical response of Coating 313 when exposed to a fuel fire environment was studied to provide a tool for predicting the reaction time. The existing Aerotherm Charring Material Thermal Response and Ablation (CMA) computer program was modified to treat swelling materials. The modified code is now designated Aerotherm Transient Response of Intumescing Materials (TRIM) code. In addition, thermophysical property data for Coating 313 were analyzed and reduced for use in the TRIM code. An input data sensitivity study was performed, and performance tests of Coating 313/steel substrate models were carried out. The end product is a reliable computational model, the TRIM code, which was thoroughly validated for Coating 313. The tasks reported include: generation of input data, development of swell model and implementation in TRIM code, sensitivity study, acquisition of experimental data, comparisons of predictions with data, and predictions with intermediate insulation

Ablative response of a silica phenolic to simulated liquid propellant rocket engine operating conditions

Ablative response of silica phenolic to simulated liquid propellant rocket engine operating condition

Homemade poultry equipment

"June, 1940""On every farm where poultry is raised the use of adequate equipment is essential for profitable net returns. The laying flock comfortably housed and provided with ample feeders, waterers, nests, and sanitary roosts will be more profitable, and the labor required to care for the flock will be reduced."--First paragraph.D.D. Moyer and K.B. Huf

Trailblazers and those that followed : personal experiences, gender, and judicial empathy.

This paper investigates one causal mechanism that may explain why female judges on the federal appellate courts are more likely than men to side with plaintiffs in sex discrimination cases. To test whether personal experiences with inequality are related to empathetic responses to the claims of female plaintiffs, we focus on the first wave of female judges, who attended law school during a time of severe gender inequality. We find that female judges are more likely than their male colleagues to support plaintiffs in sex discrimination cases, but that this difference is seen only in judges who graduated law school between 1954 and 1975 and disappears when more recent law school cohorts of men and women judges are compared. These results suggest that the effect of gender as a trait is tied to the role of formative experiences with discrimination