Results 171 to 180 of about 1,753 (208)
Some of the next articles are maybe not open access.
Energy utilization rates during shuttle extravehicular activities
Acta Astronautica, 1995The work rates or energy utilization rates during EVA are major factors in sizing of life support systems. These rates also provide a measure of ease of EVA and its cost in crew fatigue. From the first Shuttle EVA on the STS-6 mission in 1983, we have conducted 59 man-EVA and 341 man-hours of EVA.
J M, Waligora, K V, Kumar
openaire +2 more sources
Detection of Extravehicular Activity Generated Contamination
SAE Technical Paper Series, 1989<div class="htmlview paragraph">Extravehicular activity (EVA) for maintenance purposes exposes the astronaut and associated gear to toxic substances such as hydrazine and ammonia. Adsorption of these compounds on surfaces of the EVA gear allows them to be carried into the S.S, Freedom atmosphere when the astronaut clears the airlock. A quadrupole
openaire +1 more source
Requirements for Extravehicular Activities on the Lunar and Martian Surfaces
SAE Technical Paper Series, 1990<div class="htmlview paragraph">New goals set for the U.S. space program focus on reestablishing the human presence on the Moon and sending the first manned mission to Mars in the beginning of the 21st century. The necessary first step in the support of these goals is identifying requirements that drive the development of new technologies.
Mariann F. Brown, Susan M. Schentrup
openaire +1 more source
Extravehicular Activity: Performing EVA Safely
2006Abstract In his historic first extravehicular activity (EVA), Alexi Leonov faced almost every medical risk an EVA can present. Leonov left his Voskhod 2 capsule in March 1965 to begin the first spacewalk ever performed. All went well until he tried to get back into the capsule.
openaire +1 more source
A computer vision system for Extravehicular Activity Helper/Retriever
Applied Intelligence, 1995The Extravehicular Activity Helper/Retriever (EVAHR) is a free-flying robot currently being developed by the Automation and Robotics Division at the NASA Johnson Space Center to support activities in the neighborhood of Space Station Freedom or planetary habitat.
openaire +1 more source
The exercise and environmental physiology of extravehicular activity.
Aviation, space, and environmental medicine, 2002Extravehicular activity (EVA), i.e., exercise performed under unique environmental conditions, is indispensable for supporting daily living in weightlessness and for further space exploration. From 1965-1996 an average of 20 h x yr(-1) were spent performing EVA.
Stephenie A, Cowell +4 more
openaire +1 more source
Decision Support System Development for Human Extravehicular Activity
2017Human spaceflight is arguably one of mankind's most challenging engineering feats, requiring carefully crafted synergy between human and technological capabilities. One critical component of human spaceflight pertains to the activity conducted outside the safe confines of the spacecraft, known as Extravehicular Activity (EVA).
openaire +2 more sources