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 NASA testa nova estrutura de vela solarstructure  infographic
A infografia mostra como funcionam as retrancas ACS3 da NASA.


Nova tecnologia de vela solar da NASA

By Ninian Carter

April 24, 2024 - O objetivo principal do novo Sistema de Vela Solar Compósito
Avançado (ACS3) é testar uma nova retranca de fibra de carbono
enrolável que pode revolucionar a exploração espacial.

NASA is to launch a solar sail space mission that will test the deployment of new lightweight, unfurling composite booms.

The new design allows the four seven-metre-long carbon fibre booms to be rolled up like tape. When they are unspooled, they spring back into their original tube-like form to provide a rigid structure for the polyethylene sail quadrants to hang from.

Solar sails propel payloads by harnessing the pressure of sunlight photons, in a similar way to how sailboats are powered by wind pushing against sails.

In a previous LightSail 2 experimental launch, the metallic booms buckled in space. The new booms are insensitive to thermal distortions and a quarter the weight of comparable metallic booms – just 900 grammes per boom.

If the experiment is successful, NASA has plans to expand the boom design into other areas, such as beams and trusses that could build structures on the moon.

The Advanced Composite Solar Sail System (ACS3) spacecraft is scheduled to launch aboard Rocket Lab’s Electron rocket from New Zealand, on April 24, 2024.

PUBLISHED: 24/04/2024; STORY: Graphic News