Abstract :
Electronically controlled resistance welders now seam-weld these detachable gasoline tanks for the Lightning P-38 fighters in four minutes at the rate of 60 inches per minute. Since no additional metal is deposited in this process, welding rod ordinarily consumed m rod welding is saved. The process also permit, the substitution of steel for the aluminum formerly uaed. Two of the streamlined tanks are attached like pontoons to the airplanes and, when empty, may b e dropped off if the fighter needs to gain speed.
