Our Travels In France

This summer a fairy story came true to three Iowa people, when Katherine Bolebaugh and Beulah Rogers of Eddyville, two Iowa club girls, were sent to France, along with the Iowa State leader

Considerations in underwater vision

A review of the effect of water on vision revealed that all aspects of vision in air are altered in an underwater environment. The advantages and disadvantages of available means of correcting ametropia for divers were evaluated. Selection of the optimum system for a diver is dictated by his individual visual requirements and needs. A survey questinnaire was sent to dive shops throughout the United States to determine availability and popularity of each method of optical correction. Ready-made optical mas

Design data for brazed Rene 41 honeycomb sandwich

Strength data, creep data and residual strength data after cyclic thermal exposure were obtained at temperatures from 78 K to 1144 K (-320 F to 1600 F). The influences of face thickness, core depth, core gage, cell size and thermal/stress exposure conditions on the mechanical design properties were investigated. A braze alloy and process was developed that is adequate to fully develop the strength of the honeycomb core while simultaneously solution treating and aging the Rene 41 fact sheets. New test procedures and test specimen configurations were developed to avoid excessive thermal stresses during cyclic thermal exposure