Inflatable Sailplane to Explore Mars
Scientists propose an inflatable reconnaissance sailplane to explore Mars.
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How can Gliders Fly without Propulsion
Gliders are airplanes heavier than air that can be kept in flight without an engine. How can you fly without an engine? That is what
High-altitude kites could be more efficient than wind turbines
High-altitude kites could be more efficient and generate the double energy as traditional wind turbines.
Airplane Parachute
When everything else fails, or fails all at once, pull the parachute that saves the whole airplane.
