Three designs for a Lighter Than Air (LTA) structure that achieve positive buoyancy using a vacuu... more Three designs for a Lighter Than Air (LTA) structure that achieve positive buoyancy using a vacuum in place of a lifting gas were proposed and evaluated. Before the first human flight it was predicted that LTA flight was possible through the use of a light weight structure maintaining an internal vacuum. Since that time LTA flight has been used to accomplish various missions through the use of lifting gases. This study was conducted in response to an anticipated shortage of helium, the danger of hydrogen, and the possibility of using LTA vehicles as a means of passenger or cargo transportation.
Three designs for a Lighter Than Air (LTA) structure that achieve positive buoyancy using a vacuu... more Three designs for a Lighter Than Air (LTA) structure that achieve positive buoyancy using a vacuum in place of a lifting gas were proposed and evaluated. Before the first human flight it was predicted that LTA flight was possible through the use of a light weight structure maintaining an internal vacuum. Since that time LTA flight has been used to accomplish various missions through the use of lifting gases. This study was conducted in response to an anticipated shortage of helium, the danger of hydrogen, and the possibility of using LTA vehicles as a means of passenger or cargo transportation.
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Papers by Trent Metlen