ESTOLAS (Extremely Short Take Off and Landing on Any Surface) was a proposal for a hybrid type of aircraft that was developed from 2012 to 2014 in a project funded by the European Commission. Instead of an airplane's usual long, relatively narrow fuselage, it was proposed to have a bloated central void filled with helium gas to make the aircraft lighter.
ESTOLAS (Extremely Short Take Off and Landing on Any Surface) was a proposal for a hybrid type of aircraft that was developed from 2012 to 2014 in a project funded by the European Commission. Instead of an airplane's usual long, relatively narrow fuselage, it was proposed to have a bloated central void filled with helium gas to make the aircraft lighter.
Source: Wikipedia "ESTOLAS" · CC BY-SA 4.0
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