NASA tests new solar sail structure The primary goal of NASA’s new Advanced Composite Solar Sail System (ACS3) is to test a new, rollable carbon fibre boom that could revolutionise space exploration CUBESAT Solar sails will extend from nanosatellite measuring just 20cm x 20cm x 30cm Bus: Houses flight computer, sun sensors, star tracker and radio communications 20cm Solar sail spool x 4 Z plate: Additional electronics 9.9m Solar sail 7m Motor drive gears Tape driver Boom: Unrolls to 7m long Booms pull out sail quadrants INNOVATIVE BOOM DEPLOYER Carbon fibre booms pressed flat and rolled up like tape. Each weighs just 900g – 75% less than comparable metal booms, which are prone to thermal buckling EXPANSION Boom resumes tube shape when unfurled Booms could eventually be used to build structures for base on moon Sources: Space.com, NASA, Rocket Lab Picture: NASA © GRAPHIC NEWS