Durable Antifogging Coatings for Spacesuit Helmets

Maintaining a high level of visibility through the helmet of NASA Extravehicular Mobility Unit (EMU) is very difficult under inclement operational conditions.nbsp; The interior of the helmet bubble will fog up in a high humidity / cold environment with high work rate breathing for extravehicular activity (EVA) that can last up to 8 hours.nbsp; Currently used wipe on antifog solutions has problem with i) durability, requiring reapplication for every EVA, ii) can potentially get in the astronautrsquo;s eye, impairing their vision, and iii) bottles of solution are a consumable that need to be continuously restocked.nbsp; Luna has developed an inexpensive, transparent coating that will maintain optical and antifogging properties for the lifetime of the equipment.