Concept marked "1" is a concept driven from concept "2" from the last set. The giant gas bag is utilized as sails like sail boats, utilizing wind as it's power - I like to call them hydrogen sails. The sail split into 2 halves, they close up when the vehicle is going with the wind, the wind can push the vehicle forward, but when the vehicle is going against the wind, the sail split into 2 and became another set of wings. In this case the wings of the aircraft can be smaller as the gas bag can go as large to satisfy the displacement requirement
Concept Marked "2" is an aircraft made from elastic material like "latex". It remains a small compact vehicle in the ground mode. When taking off, the body of the vehicle inflates with hydrogen, a inner structure is required to hold the vehicle in shape like graph 2. The gas bag can go as high as it requires to take off with the aid of the air ducts under the vehicle. When reached a certain height, the inner structure changes, a set of wings will morph out from the side of the vehicle, a large proportion of volume will be transferred to the wings making the gas bag smaller to minimize the wind and weather impact. I prefer this concept as it is very different and it resembles it's ancestors zeppelins.4
Concept Marked "3" is a aircraft inspired by star wars fighter ships. It has 2 large vertical wings inflated with hydrogen. In the center holding the 2 wings together is the main body of the ship, where containing hydrogen tanks, fuel cells and turbine engine. It also provides propulsion to the ship. The cockpit, for easy access, is hanged on the side of the ship. It consists a gyro to maintain the pilot in the same upright position through out the flight. The wings can deflate and retract into the main body. This idea sound a bit crazy, because it need to land vertical and after take off turn 90 degrees to a gliding position. It is fun to imagine aircraft take off and flip and glide away....
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