While still in school, I restored the spent battery pocket receiver rather primitive, but effective way. With pliers gently removed the graphite rod and filled the battery with water. Then waited until the water completely evaporated, put back stem — and battery-some time worked better than new.
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ATLAS PROFILES
PROFILE "NACA-6409". Developed in the early 30-ies in the aerodynamic laboratory of the NAC (USA) for lifting aircraft-biplanes. This profile can be recommended as models of gliders...
ROCKET LAUNCHERS ON THE EASTERN FRONT
The German army during the Second world war widely used rockets In the Wehrmacht, they were called "mines", and tubular launchers for them - "mortars". Some sources claim that the...
