We offer an advanced technology for Ttropo-Stratospheric Lighter-than-air Crafts and Satellite Platforms, positioned at altitudes between 10km and 50km.
As Surveillance Drones could reach only 3km altitude, our technology could help in rising up low-orbit-surveillance satellites much higher.
Our idea is hermetic modular hydrogen-filled cubic containers, made of ultra-thin and lightweight, but extremely strong Graphene skin (link: Buletproof Graphene), 12m3 (2.3*2.3*2.3m) of volume each container, to be combined into a computer-controlled grid, and used as a powerful lifting force (10kg per container), for airships, airship tropo-stratospheric satellite platforms, aircraft and air-floating structures as "Flying Roads" ( https://flyroad.alle.bg ) , etc.
Modular Principle will avoid mass-explosion incidents and disasters similar to the Hindenburg's.
At 50km and higher altitudes, the lifting force could be hot air, continuously-heated by an on-board-fixed LMOH-GasThermal Generator. Read more here :
SAFE HYDROGEN Modular Container with Cylinder Expanders
FLYING CAR LMHHO GAS TURBINE/ELECTRIC ENGINE - CONCEPT
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China just flew a 250-foot airship to near the top of the Earth's atmosphere
TROPO - STRATOSPHERIC SATELLITE PLATFORM
ATMOSPHERIC PRESSURE VS ALTITUDE - SIMPLE TEST
terrafugia transition flying car certified