Space flight participants are not professional astronauts and subject to the rules guidance covering space crewmembers. Ordinal logistic regression of survey data was utilized explore public acceptance current medical screening recommendations regulations for safety risk implied liability civil participation. Independent variables constituted participant demographic representations while depend...

The dynamics of how astronauts' immune systems respond to space flight have been studied extensively, but the complex process has not to date been thoroughly characterized, nor have the underlying principles of what causes the immune system to change in microgravity been fully determined. Statistically significant results regarding overall immunological effects in space have not yet been establ...

Initial microgravity research centered around solving space flight problems created by the reduction in gravity’s effects experienced on orbit. How do you get the proper amount of fuel to a rocket engine in space or water to an astronaut on a spacewalk? The brief periods of microgravity available in drop towers at the Lewis Research Center and the Marshall Space Flight Center were sufficient to...

One of the most important issues in the flight control system of a space plane is how to overcome various uncertainties. This study aims to design a nonlinear adaptive flight control system based on the Immersion and Invariance (I&I) method to tolerate the uncertainties of parameters. In general, it is difficult to acquire several exact parameters, such as stability derivatives, of a space plan...

The Rensselaer Isothermal Dendritic Growth Experiment (RIDGE) is a continuation of the Isolated Dendritic Growth Experiment (IDGE), which flew on three space flight experiments aboard the space shuttle Columbia. The RIDGE is an extension to the completed flight experiments by IDGE, to further investigate phenomenon uncovered in the analysis of data obtained by these earlier efforts. The first t...

The big brown bat, Eptesicus fuscus, uses echolocation for foraging and orientation. The limited operating range of biosonar implies that bats must rely upon spatial memory in familiar spaces with dimensions larger than a few meters. Prior experiments with bats flying in obstacle arrays have revealed differences in flight and acoustic emission patterns depending on the density and spatial exten...

T WO YEARS OF manned space flight have been completed. The pace of flight progress has increased regularly as each major milestone has been passed. In the 1 year since the previous manned flight progress report at the Aerospace Medical Association annual meeting, the United States and the Soviet Union have extended the experience to a major degree in answering the questions of how man is able t...