A sensational advance in industrial technique was revealed last week and immediately opened the way for major advances in the aviation industry. The new technique: arc-welding of magnesium. Result: the further development of the so-called flying winga weird, batlike plane with no tail, no fuselage and an extraordinary efficiency (TIME, Oct. 27). Some other results:
> Magnesiumone-third lighter than aluminumcan now become a primary aeronautical material, rivaling aluminum and competing with stainless steel (TIME, June 22), instead of remaining a secondary metal used only in engine parts, wheels, accessories.
> Construction of planes, especially their wings, can be much simplified and cheapened.