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The use of external modifications in the base region to reduce the base drag of a blunt-base body in the presence of jet engine exhaust was investigated in flight. Base pressure data were obtained for the following configurations: (1) blunt base; (2) blunt base modified with splitter plate; and (3) blunt base modified with two variations of a vented cavity. Reynolds number based on the length of the aircraft ranged from 1.2 to 3.1 x 10 to the 8th. Mach number M ranges were 0.71 less than or = M less than or = 0.95 and 1.10 less than or = M less than or = 1.51. The data were analyzed using the blunt base for a reference, or baseline condition. For 1.10 less than or = M less than or = 1.51, the reduction in base drag coefficient provided by the vented cavity configuration ranged from 0.07 to 0.05. These increments in base drag coefficient at M = 1.31 and 1.51 result in base drag reductions of 27 and 24 percent, respectively, when compared to the blunt base drag. For M less than 1, the drag increment between the blunt base and the modification is not significant.

1Practical Guide to Self-Hypnosis

By Melvin Powers

Summary from <em>A Practical Guide to Self-Hypnosis</em>: This book is written in terms that are comprehensible to the layman. The step-by-step instructions should afford the reader a means of acquiring self-hypnosis. The necessary material is here. The reader need only follow the instructions as they are given. It is the author's hope that you will, through the selective use of self-hypnosis, arrive at a more rewarding, well-adjusted, and fuller life.

2Stories the Iroquois Tell Their Children

By Mabel Powers

Stories the Iroquois Tell Their Children by Mabel Powers is a beautiful collection of traditional Iroquois tales that not only entertain but also teach fundamental cultural values and life lessons. These stories, passed down through generations by elders around the fire, serve to educate children on themes such as bravery, kindness, respect for nature, and the importance of community. The book’s tales feature a range of characters including the Little People, animals, and children. Each story is rich with symbolic meaning. Powers also touches on the role of nature in these stories, reflecting the Iroquois' deep reverence for the natural world and its creatures, while exploring concepts like gratitude, generosity, and cooperation. By weaving together these ancient tales with lessons about life, the book offers not only a glimpse into Iroquois culture but also timeless wisdom that transcends generations. - Summary by Anthony Karl Futterer